SCIENTIFIC ABSTRACT BESSONOV, A. F. - BESSONOV, A. P.

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21220 S/126/61/011/003/007/017 c?46, .2.22 0 E193/E483 AUTHORS: Strekalovskiy, V.N., P_t~ ~A,1~., Vlasov, VG. and Sidorenko, F.A. TITLE: Phase Transformations During Reduction and Oxydation of Uranium Oxides PERIODICAL: Fizika metallov i metallovedeniye, 1961, Vol~ll, No-3, PP.400-403 + 1 plate TEXT: The uranium-oxygen system has lately attracted a great deal of attention owing to the possibility of using uranium oxides (dioxide in particular) in the manufacture of ceramic fuel elements. However, the experimental work has been mainly confined to studies of oxydation or thermal decomposition of uranium oxides, and the object of the present in-iestigation was to study (a) the kinetics of hydrogen raduction of' amorphous U03 and green U308 at 300 to 7000C, W the process of oxydation of U02 in air, oxygen and C02 at 165 to 860*C and (_-) the phase transformations taking place during these reactions, The results of the study of kinetics of the reduction process are reproduced schematically in Fig.1, where the rate of reduction (A in arbitrary units) is plotted against the overall --amposition of the Card 115 21,220 Phase Transformations S/126/61/oil/003/007/017 E193/E483 resultant product, i.e. against the oxygen/uranium (O/U) ratio. It is pointed out, in this connection, that. neither the rates of reduction of U03 and U08, nor the energy barrie:s during the crystallo-chemical transformations of these oxides are the same; thus, for instance, hydrogen reduction Of U03 begins at 350*C, the corresponding temperature for U08 being 4500C. In addition, reduction of U03 at temperatures < 500% practically ceases when the oxide reaches the oxide content corresponding to U02-33; at higher temperatures, U409 and oxides with a still lower oxygen content are produced. The results of the kinetic studies were correlated with the results of X-ray diffraction analysis of the products of the reduction of U308, and the following conclusions were reached regarding the phase transformations, taking place during the reduction process. In the initial stages, UiO8 gradually loses its oxygen, this process continuing unti the starting material is reduced to 46.9% (100% reduction corresponding to complete conversion Of U03 to U02) which corresponds to the overall composition of the product given by the formula U02-539; at this stage. the X-ray diffraction pattern still shows the Card 2/5 21220 S/126/61/oll/003/007/017 Phase Transformations E193/E483 lines of the U308 phase; the lattice parameters of the initial phase have changed but, no lines of a new phase have yet appeared; at 62 and 69% reduction, the lines of the starting oxide are still present in the X-ray pattern and lines of the cubic U407 phase appear,, at 75% reduction, the U308 lines completely disappear and only the U407 lines remain; after a further decrease in the oxygen content, the crystal structure of the oxide remains cubic but the lattice parameter increases. Reduction of U03 takes place in a similar manner, the crystalline U308phase being formed directly from the amorphous U03 which does not pass through the crystalline form during this process. The whole reduction process can be represented in the following manner-. Amorphous U03--JSolid solution, based on U02,6 -IU02.2_4UO2+x* Regarding the process of oxydation of U02 in air or in oxygen, it can be represented by;, -+Solid solution, based on U02.67, U02 ' U02 + x U02-36 + 0.05 The tetragonal phases (U02.32 0.0.1, U02.35, U02.3?, U02A1) whose presence can be inferred from the kinetics of the process studied, are unstable and decompose to form U409 and U308, When Card 3/5 21220 S/126/61/oii/003/007/017 Phase Transformations E193/E483 the 6xydation reaction takes place (in air or oxygen) at temperatures >4000C, no formation of the tetragonal phases occurs, and the process proceeds according tot U02-+UO2 + x_')'UO2,25-4Solid solution, based on U02,67 Finally, it was established that U02 does not oxidize in carbon dioxlde~ There are 3 figures and 12 references,,, 8 Soviet and 4 non-Soviet, ASSOCIATIONg Urallskiy politekhnicheskiy institut im. S.M.Kirova (Ural Polytechnical Institute imeni S.M.Kirov) SUBMITTEDi juiy A, ig6o Card 4/5 'on rl'~n lli?n "Kh 'on 9 SUOT,417wjojguu-u asuqd LTO/Z00/~00/TTO/T9/99T/S 24484 S/126/61/011/006/010/011 0 7 10 E193/E483 AUTHORS: Bessonov, A.F. and Vlasov., V.G. TITLE- Phase transformations during oxidation of metallic uranium ' PERIODICAL: Fizika metallov i metallovedeniye, 1961, Vol.11, No.6, PP-957-959 TEXT: 7ne object of the present investigation was to study oxidation of uranium in air and carbon dioxide. To this end, specimens (4 x 2 x 15 mm),,were degreased, pickled in concentrated HN03, washed in alcohol and held for 15 minutes in air at various temperatures between 20 and'3500C, or in C02 at 400 to 9000C, after which the surface of the specimens were examined by X-ray diffraction. The results are reproduced-in Fig.1, showing the X-ray diffraction pattern of the surface of uranium specimens after (a) 8 days exposure to air at room temperature, (4) oxidation at 1000C, (8) oxidation at 2050C, (?,) oxidation at 3000C, Cb) oxidation at 350%, (e) removal of the outer, loose, oxide layer. An X-ray diffraction pattern of uranium, oxidized in C02 is reproduced in the paper. The following conclusions were reached. 1) The phase transformations taking place during oxidation of Card 1/3 24484 S/126/61/oli/oo6/m/oil Phase transformations E193/E483 uranium in air at 265 to 4OO*C can be represented by: Umetarl-ta U02-1W& U02+x-+P U09-*U307 -*solid solutions based on U02.67 2) The constitution diagram of the U-0 system is repeated in the phases which constitute the consecutive oxide layers of scale, formed on uranium in air at atmospheric pressure in the temperature interval studied. 3) Metallic uranium, heated in C02, oxidizes to U02 only. There are 2 figures and 8 references: 7 Soviet-bloc and 1 non-Soviet-bloc. The reference to an English language publication reads as follows: Blackburn P., Weissbart J., Gulbransen E., J.Phys.chem., 1958, 62, 8. ASSOCIATION: Urallskiy politekhnicheskiy institut im. S.M.Kirova. (Ural Polytechnical Institute Imeni. S.M.Kirov) SUBMITTED: December 15, 1960 Card 2/3 Phase transformations Fig.l. Ilb Card 3/3' 24484 S/126/6i/ou/oo6/oio/oli Ei93/E483 4, S/ 2~485 oil/oWoli/oll 0 E073/E335 V~Tlqdig* BessonQv. A.Fog.Borisov, B.S. aid Vlasov, V.Qq TITLE: Investigation of the Structure of the Primary Oxide Film on 'Uranium PERIODICAL: F--*zika metallov i metallovedeniye, 1961, Vol. 11, iio. 6, pp. 959 - 960 TEXT: --n studying the mechanism of oxidation of metals invosti,:,ation of the structure of the primary oxide film formed in air at room temperature during the initial oxid&tion'period is of great importance. For some metals the structure of the films .Lornod durinZ the initial period of oxidation does not differ ~rosn those formed during later stages of o.-idation. For a .numoer of other metals, for instance, iron and its alloys, a film of a particular structure (type J-Fe 0 ) forms during 2 3 i t.:"e initial period of oxidation. The primary oxide film s a -.1rotective one for most metals; it grows to some limit thickness, then stops growing and prevents further oxidation. 'D The kinetics of -rowth of the primary films depends on a Card 1/4 24485 s/126/61/oil/oWoll/oll Investigation of the Structure ... E073/E335 number of factors and so far no satisfactory theory on this process exists. The authors carried out investigations on uranium of 99.80,!l purity which, after rolling, was annealed at 850 OC for six hours in vacuum. Plate specimens 10 X 5 x 3 mm were initially ground with enery paper of varying coarseness and lapped by a ring using high-grado alumina. After polishing the ring was moistened with benzol or ethyl alcohol to prevent access of air to the polished surface. Microscopic investi- ,gations have shown that the surface was peppered with fine crystals and the number and size of the crystals increased rapidly. For determinincr the structure of this primary film electron-diffraction studies were made. For removin- the scale films the specimens were etched in nitric acid for 10 rain and then washed several times in ethyl alcohol. Oxidation was in air at room temperature for durations of 10, 30, 120 and 240 min. In the socond series of experiments, the specimen, after having been taken out of the alcohol (wet), was placed im:11ediately into the chamber of the electron-diffraction Card 2/4 24485 S/126/61/oll/oWoll/oli investigation of the Structure E073/E335 apparatus from which the air was evacuated so that the specimen surface interacted only with the air which remained in the cha,mber of the electron-diffraction camera. Part of the specimens were subjected to el ectron-dif fraction investigations immediately after poliohinr~ (i..ithoiat etching); bach reflection pictures '%-rere ta%en. The obtained interplane distances %.rere compared with X-ray data, obtained by the powder method for uranium o::ides. TI-ie investigations revealed a cubic phase on uranium o:Ude with a lattic constant of a = 5A5 A for all the specimens, wIlAch corresponds to the oxide U02' In a second series of experiments the electron-diffraction patterns contained rcflwces' .Lrom the metallic uranium in addition to lines of the phase UOV This indicates that in this case the entire thiclmess of the oxide film participated in the diffraction and that the primary oxide film of uranium consists solely of the paase UOP. From the widening of the Debye lines the size of the forming UO -4 It. 2 crystals could be determined, which was about 10 cni. Thus, Card 3/4 24485 suilulAcc Zin caps); Givea Na=s Country: Yugoslavia -7 Aca&*mic D_-E_~rees; /not given"/. Af:eiliation. Veterinary Station CVeterinaraka stanica), Imotaki Sourcet Belgradep .erivarski SjUnik No 6o 1961t pp 529-531. Data: *Field Rminotow-in Nentraumatic Indigestion Just Before Calvinsol Authorst BESTAL V. E , D. 1.3f, S/126/61/012/003/011/021 E193/E135 AUTHORS: Bessonov, A.F., and Vlasov, V.G. TITLE: Concerning the mechanism of oxydation of metallic uranium PERIODICAL: Fizika metallov i metallovedeniye, vol.12, no.3, 1961, 403-40 TEXT% Effective measures against oxydation during the preparation of metals or in service can be applied only if the mechanism of this process is properly understood. Hence the present investigation, in which the kinetics of oxydation of uranium were studied by the gravimetric method and the constitution of the scale formed on uranium under var.Jous conditions was determined by X-ray diffraction, microscopic, and electron diffraction analyses. The experiments were carried out on 99.8% pure uranium specimens, degreased, pickled in concentrated HN039 and washed in ethyl alcohol. The oxydation tests were carried out in dry air and oxygen at various temperatures and pressures; some results are reproduced gra hically. In Fig.1 the specific increase in weight (&M/s x __t, mg/cm2) of uranium Card 1/6- J Concerning the mechanism of oxydation.. s/i26/61/012/003/011/021 E193/E135 heated in air is plotted against time (minutes), curves 1-6 relating to tests conducted at 250, 300, 350, 400, 600 and 760 OC respectively. The kinetics of oxydation of uranium in oxygen are illustrated in the same manner in Fig.2, where curves 1-4 relate to results obtained at 250, 300, 330 and 400 OC. It was established that the effect of pressure (p, mm Hg) on the rate of oxydation (v, mg/cm2) in minutes of uranium in air at 400 OC is described by 4f T for pressures higher than 200 Mm Hg, and by v a2 P (4) for pressures lower than 200 mm Hg. The oxydation rate of uranium in oxygen at 300 OC under pressures ranging from 5 to 550 mm H9 is given by v = a3 0/--P. The rate of oxydation was not affected at all by forced circulation of oxygen and only to a small extent by circulation of air at pressures > 200 mm Hg; at p < 200 mm Hg forced Card 21.6. Concerning the mechanism o -f oxydat-'on... S/126/61/012/003/011/021 E193/EI35 circulation of air increased the oxydation rate, this effect becoming more pronounced at higher temperatures. The activation energy of the process studied was 18 and 4.6 kcal/mol, when the reaction took place in air below and above 400 OC, respectively, and 17 kcal/mol for oxydation in oxygen below 400 OC. The oxide film formed on uranium in air at room temperature had a crystalline structure and consisted exclusively of U02, The constitution of scale formed on uranium in air at 26o-4oo OC was determined by the present authors in an earlier investigation: the composition of the consecutive layers starting from metallic titanium (Umet) is U(met)-.) a UO2 Ot UO 2+ UO2NO 9 U307 _> U 308 Although the molecular volume, U., of uranium oxide is larger than the atomic -volume, Um, of uranium, the oxide scale formed on this metal does not protect it from further oxydation. This is attributed by the present authors to the coarsely-crystalline nature of the oxide film formed at room temperature, and also to the fact that large internal stresses are set up in the oxide film Card 3/~) Concerning the mechanism of oxydation ... S/126/61/012/003/011/021 E193/EI35 owing to the large difference between the specific volumes of the uranium oxide and uranium whose ratio varies between 1.9 and 2.6. To determine the relative roles played in the oxydation of uranium by the diffusion of oxygen and metal, tests were carried out in air at 350 OC on specimens fitted with inert platinum markers in the form of 0.02 mm thick wire; irrespective of the duration of the test, the platinum marker remained on the surface of the oxide scale. The results of the present investigation are discussed in relation to various published data and it i3 concluded that diffusion of oxygen through the dense triplex "02-73* aU02,x--)~ OU02(U409) layer of oxides with a cubic crystal lattice which adheres strongly to uranium, governs the kinetics of oxydation of uranium. There are 4 figures and 15 references: 10 Soviet-bloc and 5 non-Soviet-bloc. The English language references read as follows: Ref-5: N.B. Pilling, R.E. Bedworth. Inst. Met., 529, Vol.29, 1923. Ref-7: P. Blackburn, 1. Weissbart, E.I. Gulbransen. Phys. Chew., 1958, voi.62, 8. Ref.10: F.I. Gronvold, Inorg. Nucl. Chem., 1955, Vol.1, 357. Card 4M- Concerning the mechanism of oxydation... S/126/61/012/003/011/021 E193/E135 ASSOCIATION: Urallskiy politekhnicheskiy inBtitut im. S.M. Kirova (Ural Polytechnical Institute imeni S.M. Kirov) SUBMITTED: February 6, 1961 Am to,' 1#01 Fig.1 Card 5/j9,,- B,oe,w.q, NUy BESSONOV y A, VLASOV , V, G. Interaction of uranium metal with carbon dioxide. Fiz. met. metalloved. 12 no.5-.775-778 N 161, (MIRA 14-12) 1. Urallskiy politekh t:lt tut imeni S.M.Korova. (=heusk m!~M~ i lograpby) (Carbon dioxide) V.G.; SHAlAGINOV, V.N.; BESSONOV A.F.; STREKALOVSKIY, V.N. VLASOV, Z.- Change of the design of a glass pressure regulator. Trudy Ural. politekh.inst.no.12L102-103 162. (MM 16:5) (Pressure regulators) 39732 C S/1 600/004/002/003 Aoo6/A lo 1 AUTHORS; Bessonov, A. F., Vlasov, V. 0. TITLE: Kinetics of uranium oxidation with air, oxygen and carbon dioxide PERIODICAL: Izvestiya vysshikh uchebnykh zavedeniy, Tsvetnaya metallurgiya, no. 4, 1962,. 137 - 142 TEXT: Oxidation of uranium metal was studied in aggressive gas media at various temperatures a;jd pressures of the oxidizing gas, for the purpose of ob- taining kinetic charact' ess. Com- .Fristics and revealing the mechanism of the proc mercially pure uranium.-Metal plates (2,5xl.5xl.5 mm) were oxidized in a high-vac- ii9m device. The true ratp of the oxidation process was graphically determined from t1Tp inclination angle of-the tangent to the"oxidation degree-versus-time" curve. The apparent activatioW~iqnergy was calculated with the aid of the Arrhenius equa- tibn. The average composition of the oxidation product was determined by calculat- ing the increase in weight of the specimen during oxidation and the loss in weight during reduction with hydrogen. It was found that the oxidation process in all the given ag4ressive media obeys the temporar7 linear law; the rate of the process is proportional to the square root from air and oxygen pressure. The possible mechM ism of the uranium oxidation is analyzed with the aid of Soviet and foreign Card 1/2 S/149/62/bc,0/004/002~003 Kinetics of uranium oxidation with air,... A006IA101 sources (Ref. 9; P. Chiotti, H. Klepfer, R. White. Trans.Amer.Soc.Metals, 51, 772 (1959)). It was found that the diffusion of oxygen atoms through a dense layer of uranium dioxide was the decisive limiting stage. There are 4 figures. ASSOCIATION: Ural'skly politikhnicheskly institut (Ural Polytechnic Institute) SUalITTED: July 25, 1960 Card 2/2 STREKALOVSKIY, V.N.; BESSONOV, A.F.; ZHUKOVSKIY, V.M.; NEUYMINJ, A.D. Electric properties of uranium oxides. Trudy Inst. elektro- khim. UFAN SSSR n0-3:155-159 162. (MIRA 16:6) (Uranium oxides-Electric properties) S/149/62/000/005/004/008 Aoo6/AlOl AMHORS: Vlasov, V. G., Bessonov, A. F. TITLE: Oxidation of uranium dioxide PERIODICAL: Izvestiya vysshikh uchebnykh zavedeniy, Tsvetnaya metallurgiya, no. 5, 1962, 113 - 122 TEXT: Since the opinions of scientists differ on the mechanism of the oxidation process of uranium dioxide, the gathering of experimental data in this field is imperative. The authors studied kinetics of uranium dioxide oxidation in different gas media and investigated simultaneously the effect of the admix- ture of alkali metal carbonates and Th03, ZrO2 and TiO2 oxides upon the kinetic characteristics of the oxidation process. Kinetics of oxidation with air oxygen was studied within a range of 165 to BOOOC, at 2.5 - 600 mm Hg atmospheric p~res- sure. The results are shown in Graph (2). Determined values of the apparent ac- tivation energy at different oxidation degrees range from 34.6 kcal/mole at 28% oxidation to 39.4 kcal/mole at 9(Yo' oxidation. Kinetic characteristics of U02 oxidation with pure oxygen were investigated in a range of 125 to 3300C and Card 1/6 s/149/62/000/005/004/008 Oxidation of uranium dioxide Aoo6/Aiol PO, = 100 mm 11g. The following schemes of phase transformations are proposed: C U02.04 - U02+xmax _"02.25 .- U02-36+0-05 -"02.6-xmax ---)'U02.67 for the 260 to 3900C range, and U02.04 --> U02+x 111ax -*:~ U02.25 --P U02.6-xmax -~,U02.67 for the 400 to 8000C range. The effect of different admixtures upon the process is given in Figures 5 and 6. Due to the liberation of considerable amounts of heat in oxida- tion Of U02 to U308' local overheating occurs In the solid phases, entailing a sharp increase in the process rate on these spots, so that several phase transi- tion's take place. This explains the jumplike evolution of the process in the 150 - 2000C range. The inhibiting effect Of K2CO admixtures on U02 oxidation V at 1850C is apparently due.to the fact that at t12s temperature the migration of potassium ions from the carbonate crystal lattice into that Of U02 is little probable. Simultaneously the admixture is in a close contact with U02 and screers a portion of its surface. As a result, the surface for oxygen adsorption from the gaseou3 phase is reduced and the total rate of the oxidation process de- creases. At 3300C the accelerating effect of alkali metal carbonates appears on those stages where a substantial reconstruction of the crystal lattice takes place. Apparently the catalytic effect of carbonates consists in the fact that Card 2/6 Oxidation of uranium dioxide S/149/62/000/005/004/008 Aoo6/Aiol their particles.are crystallization centers of a new phase which eliminates the induction period. There are 6 figures. ASSOCIATION: Ural'skiy politekhnicheskiy institut (Ural Polytechnic Institute) SUBMITTED: April 22, 1961 Card 3/6 s/14q/62/ooO/oo5/0o4/0o8 Oxidation'of uranium dioxide Aoo6/Aloi Figure 2. Isotherms of U02 oxidation with air oxygen (at constant 200 mm llg air pressure) 2r. - Zj. ,a!: 5 2jj . Card 4/16 LZ A At, W $6 S. Oxidation of uranium d1oxtdc s/09/62/000/0c)5/004/608 Aoo6/A i o 1 Figure 5. Isotherms of' UOn oxidation with air oxygen at 1850C (1 and 2) and at - 6) 'thout admixtures (2 and 3) and with admixtures of 3300C (3 wj K2('03 (1 and 4 N Li aOC03 2C03 (6). U) cd 0 zi `4 ~; 0 4t cu 0 Card 5/6 Oxidation of uranium dioxide ,3/14g/62/()00/005/004/008 Aoo6/Alol Figure 6. Isotherms of U02 oxidation with air oxygen at 330OC-Without admix- ture (1) and with admixture of ThO2 (2); Zr02 (3) and T102 (4) cd 2.40 227 2 Q 4Je ~4 X 0 Card 6/6 S/126/62/014/003/021/022 E039/E42O AUTHORS: Bessonov, A.F., Vlasov, V.G. TITLE: The interaction of uranium with nitrogen PERIODICAL: FiziXa metallov i metallovedeniye, v.14, no.3, 196z, 478-479 TEXT: The kinetic processes of oxidation have been investigated previously by the authors. This is a continuation.and the formation of uranium nitride is investi7gated. The apparatus and method is described.in the previous paper, the nitrogen gas being obtained from liquid nitrogen and purified by passing over titanium at 8000c and CaC12- The basic investigation is carried out at 200 mm Ng in the temperature range.400 to 9200C. Initially the reaction pr .oceeds parabolically with time for about 0.5 min and then continues linearly for all temperatures. No reaction is observed below 400*C. At 590 and 710*c the rate of reaction is proportional to the square root of the pressure. Circulation of the nitrogen does not produce any effect on the reaction rate. The activation energy of the process at 6300C is 16 kcal/mole and at higher temperatures 7 kcal/mole, C~rd 1/2 S/126/62/014/003/021/022 The interaction of uranium E039/E420 X-ray analysis of the nitride formed at 9200C shows that it has a, face-centred cubic lattice. The initial rate of reaction is modified by the presence of the U02 layer on the uranium surface and the linear part is associated with the diffusion of the nitrogen through the nitride layer. It is suggested that the square root dependence of the rate of reactiaii'on,pressure is due to the dissociation of the nitrogen molecules.into atoms during the diffusion process through the nitride layer. The decrease in activation energy above 630'C in explained on the basis of the .U a to Up transition. There is I figure. Card 2/2 S/08%6 2/03 5/003/017/024 D202 302 AUTHORS: Bessonov, A. P., Vlasov, V. G. and Strekalovskiy,V. N. TITLE; Cyclic oxidation-reduction of uranium oxides PERIODICAL: Zhurnal prikladnoy khimii, v. 35, no. 3, 1962, 657-0660 TEXT; The subject of this study was the elucidation of the fol- lowing questions: 1) Which phases are formed during the oxidation 0 and reduction processes of active uranium dioxide and urano-urani- um. oxide? 2) Can the tetragonal phase be obtained at temperatures below 400 - 5000C? 3) The oxidation kinetics of active uranium di- oxide, unstable at room temperature. The work is a repetition of investigations previously published by Western scientists. The authors state -that their resulta Lire in good agreement with those given in Western literature. The following phases were found dur- ing the cyclic oxidation and reduction of uranium oxides in the temperature range from 20 to 5000C: U021 '02�Xl U02.25' U02-36�Xl UO 2.6�X' U0 2.67* The tetragonal phase does exist as a stable one Card 1/2 Cyclic oxidation-reduction ... S/08 62/035/003/017/024 D202X302 at some definite temperature range between 5000C and room tempera- ture. There are 3 figures and 8 references; 1 Soviet-bloc and 7 non-Soviet-bloc. The 4 most recent references to the English-lan- guage publications read as follows: R. W. Willardson, I. 1-loody and H. Goering, J. Inorg. Nuclear Chem., 6, 19-38, 19~8; 0. Runnols, Nucleonics, 17, 104-111, 1959; A. Arrot and I. Goldman, Phys. Rev., 108, 948, 1957; F. Blackburn, I. Weissbart and E. Gulbransen, J. Phys. Chem., 62, 8, 12, 1958. SUBMITTED: January 16, 1961 Card 2/2 0 STREVAU'VS.-K-TY, V.N.; NEU)TT, A.D.; B:-,,"'SCN',,V, A.F. Flectric conductivity of hIghor uranium oxides in a hydrogen stream. Zhur. fiz. khim. 36 no.6;:1355-1358 Je'62 17-7) 1. Institut elektrokhimii Ural'--kogo filiala V4 SSSR. S/126/63/015/003/024/025 E039/E1135 AUTHORS: 'Besson2y,_A-_F,, Vlasovi V.G. TITLE: On the 'question of the high temperature oxidation of metallic'uranium PERIODICAL: Fizika metallov i metallovedeniye, V.15, no.3, 1963, 477-478 TEXT,. Tho oxidation of uranium by C02 at temperattiros above 9000C is investigated. The uranium (technical purity 99.8%) in the form of plates is first degreased in benzene, etched with cold concentrated nitric acid'and then thoroughly washed in ethyl alcohol. Isotherms are ineasured at temperatures of 900, 950 and 10000C-for a C02 pressure,of 420 mm 11g. It is shown that the dependence of the rate of.oxidation of uranium on the pre.saure of C02 is given by v = ap n C02 1 where n = 7 ; a is-a temperature consiant; PC02 is the pressure Of C02- It is also shown that the rate of circulation of C02 has practically no effect on the reaction rate. The Card 1/3 S/.126/63/015/003/024/025 On the question of the high ... B039/F,433 -,,--disintegration of the as mple is caused by the phase changes 772* 6 2 Ua UY -~,. Up which produces an inerease-in volume and -Up..~4 which produces a decrease in volume. X-ray diffraction analysis shows that therels a layer of UO on the surface of the U02- This is also detected chemically together with the mono-nitride and mono- carbide in the surface scale of uranium oxidized at C02 at 10000C. The catalytic effect.of U02 is demonstrated by comparing the rates of oxidation of pure iron powder and a mixture' of iron powder and U02 (205'a by wt Fe). The U02 produces a significant increase in the rate of oxidation of the iron. 'When the temperature of uranium is increased from'900 to.1000.*C the rato of oxidation decreases owing to an increase in density.of the UO-. At temperatures < 7800C the oxidation is accomplished by oxygen diffusing through the oxide layer but at temperatures > 9000C the rate of diffusion of the metal through the scale becbmes significant, There are 2'figurea. ASSOCIATION:,Urallskiy politekhnipheakiy institut im. S.M.Kirova (Ural PolytechniSal Institute.imeni S.M.Kirov) Card 2/3 S/126/63/015/003/024/025- On they- question or the high ... r,039/B435 SUBMITTED: September 2,'1962 (initially) October 6, 1962 (after revIslon) Card 3/3 ~,MCL Of Lbe E,Irface stal.e of 3ay~.--,s on procosS of magmc~sftv powders. ljorosli. met. 5 1656 0-1-li"A 19~5) 1. VosLochpyr r,--,,jo'tini;-is--~iclovatellskiy j prc,:fekLtiyy in---i ogneuoornoy promps'niermost2, -S,.rcr6]ovsl,. L 1253-66.. 3e(e)/31T(m)/T - Wh' rWUC=0N NR: AP5021510 UR/0131/65/000/008/0030/0034 666.76.0012 AUT14OR- Bessonov A F U~nj~jev, V. M. TITLE: Investigation of phase changes in the systems of MgO-Fe2O3 and MgO-FeO(Fe2O3) during heating and cooling in air SOURCE: Ogneuproy, no. 8, 1965, 30-34 TOPIC TAGS: refractory compound, magnesium oxide, iron oxide, electric resistance, phase analysis, solid kinetics ABSTRACT: The article considers phase changes and chemical interactions under nonequilibrium conditi ns, that is, under the actual opLarating conditions of these refractory materials7A special apparatus permitted simultaneous measurement,. 6~_e!66irical resis' and X-ray analysis of the samples at different tempera- tures. The compositions of the samples were: 90% MgO and 10-'7j Fe2O3 and 90% MgO and 1016 FeO. The samples were prepared in tablet forizi 3-4 mm thick by mixing finely ground powders, with subsequent pressing. The samples were placed in a high temperature chamber which permitted heating to 1500 C, with r-M 1/2 i, 1253-66 ACCESSION NR: AP5021510 attachment of a URS-501 diffractometer. They were heated at a rate of 0. 17 de- grees/sec with practically no temperature gradient across the sample. The phase composition of each sample was studied by continuous X-ray photography in the angular range of 200-270301. For some samples complete X-ray photos were taken over the angular range of 11-410. The same measurements were made with cooling of the samples and subsequent reheating. Results for both types of sam- ples in the given temperature interval are shown graphically. Basically, the article gives a qualitative picture of the kinetics of phase changes in the systems MgO-Fe,03 and MgO-FeO(Fe 03) at atmospheric air pressure and with continu- ous heating to 1400 C. In parficular, it is shown that magnesioferrite under these conditions forms at 290 C. Orig. art. has: 8 figures ASSOCIATION: Vostochnyy institut ogneuporov (Eastern Institute for RefractoFY___,___ SUBMITTED: 00 ENCL: 00 SUB CODE: MM, IC NR REF SOV: 006 OTHER: 005 Card 2/2 BFS'014OV, A.F*,t 1UTIVOTSEV, V.M,; !AROSLAUSEV, A,.'~, :nvestigating the kinetics of phase transformations in a 5peclmen of magnesium and copper oxides. -Izv. vys. uctleb, zav,,,~ tavet. met.. (~171j,lt 18~ ,JV! 8 no.5~.49-53 165. 1. Vrallskiy politeklinicheskiy institut, kafe.3ra mesta~bll:,~I-i tyazhelykh t2vetnykh metallcv -., Vostochnyy institar, ngneuporov. BESSONOV,-.A.S.t kand.veter.nauk Diagnoais of trichinelliasis. Voterinariia 41 no.10:85-86 0 164. (FJRA 18:1.1) 1. Vsesoyuznyy institut gellmintologii imeni akademika Skryabina. ~';T(i-IiVE'.:P(w) EPF(c'/F St 1-;G 'E;'IAkZ- ViTI E! Q p7- ACC55-'-J0?,' JUP.-5,012504 LPi~/0032/65/031/005/C&'O/C-,,21 5)9-:C6.07 :MUIIJIOPS?~ Devsonov, A. F,; Untlyantsev, V. H. TIME: A device for the simil-taneous high temperature plotting of cumes of slectrical conductivity and x-ray patterns of solid oxidpA SOURCE: Zavodskaya Iaboratorlya,.V. 31, no. 5, 1965, 620-621 r oxide electric conductivity, high tempara- TOPIC TAGS: x ray diffraction stut dnstrumvht. measuring apparatus ture 3G I audio frequency gen rator, RNSH autotransformer., 531M 220 0.75 voltage regulator, FSR 03 automatic potentiom;rtor, PP potentiometer, Ronionster URS 50334 goniometer j O~SOA -LOMMM, A devicq was developed Xor providing sim4;p=eDuS May ana-l-v-sia/and I~elsctrical conductivitz measurements of Solid Oxlded~~t high temperatures.R'Dy nt SI-M,11 I B~alg--LHF t-wo types of r-easurems a- T'nnaously, th problem of the ccnqgrue--~o of these meaDurements at high temperatures has been eliminated. The glectrical conductivity meaaurenents are made with a standard 14heatstons bri&,ge (Fig. 1 ot the Enclosure) In which R is the regulated resiatance for determining, ho t 3 lance R x of the specimen., and R.4 ip the Bta nda=d resistance for periodicaLly C rd :L/ L 53592-65 ACCESSION IM: AP5012504 Calibrating ths bridge. A capacitor box (1) is connected to one log. A 'G-1 audio frequemcy generator (IWO-5000 cps) in oro diagoiial preventu pro-electrode iT)o1arization. An oacillograph (3) in the other bridge diagonal serves as a 7-ero indicatlor. AD RIISE-55 autotransforner (6) controls the heater located in 'Uia high terperature chanber (5). A SME-220-0.75 voltage regulator (7) elini-nates voltage fluctuations. A FISR-03 automatic potentiometer (8) is used for recording and regulatinr7 the specim-an temperature, and a P? potentiometer (9) is used for fire + 1.-30 tenuerature neasuraments. The heater (7W,. Pt + 30% Rh) can heat the hori- -o temperatures zontal tiibular furnace (attached to the vater-cooled casing) up 4V of 1500C. The x-ray camera, uhich can be positioned in t%,T dimnsions by tl,,o lunners,, is nounted on either a LTS-501 or a UIRLS-50311 gonioneter. The corunda-r- heater block has a 10-12-= hole in which the specinen is placed for its conductiv- Ry measuren-ent. no furr-ace is surrounded by lightweight bri-eks and its ends are _C, sealed with therrizal insulation disks. ' 'Fhe x-ray beam slit's are covered with nickel foal. There are t-wo slit varia-tions: the side slit Mrm-Ittimg an an.-alar irange of 500; the end slit with an angular range of 720 with unit URS-501 or of 821) with URS-501214. -In test masuremmants, in addition to the Pt-PtRlh thermocouple, tomparat-ares iTore controlled by otud~rizg the %-bray patterns of platinum, uhich vary with te=eraiturs in a Imown vay, Test measurements gave excellent results. Card 2/4 ACITESSION SIR: AP501-125OX ov-ig. art. han: 2 figures, AS 'MOULMCMI.- Vo3toohw nauchno-ImiledovatelloMy i proyoktTwy institut ogrEmpornoy prm7,shlor-n6sti, (I~Roterz) Scientific Rrmearch nnd Doviryi ImolAtnto of the RvLmot;n~y industx-1) SMAJTIED.- 00 ENCL: 01 SUB GODE:TD,- &H INO RU SOV., 003 OTHER,., OW !,.F. ; STREKALOIK.~K FY, V..N. ; N~% UY!-!l IN, Ilranium dioxide oxidation st-.icfled by thc, -f alecAric conductIvIty, X-ray dlf'fr.,Ant~cm, and Zhur.fiz.]~Illm. 39 no.7.~1708-1711 -JI lb5- (MURA IL8:8) 9 L 1657-66 EWT(m)/EPF(r.)-2/~KG(m)/Wp(t)/W(W __1JP CL) M JD WV1 JG ;,ACCESSION NR: AP5021417 UR/0076/65/039/008/1932/1937 541.13t541.17 AUTHOR: Bessonov, A. F.; Ust'yantsev, V. M. TITLE: Study of certain oxide systems with the aid of a high-tenperature device zthe simultaneous measurement of the electrical resistance and x-ray diffraction 'analysis of samples !SOURCE: Zhurnal fizicheskoy khimii, v* 39, no. 8, 1965, 1932-1937 JOPIC TAGS: electrical resistance measurement, x-ray diffraction analysis zirconi- lum oxide phase analysis iABSTRACT: The properties of ZrO - MgO and Zr02 - Y203 Compositions (taken in the 2 iratio of 73:25 and 93:7 mole % respectively), whicS-were pressed and sinterred at I !16000C, were studied as a function of temperature by means of a novel device which ipermitted the simultaneous measurement of electrical resistance and x-ray diffrac analysis. A wiring diagram of the device is given. 'The phase transformations iof Zr02 were investigated, and the electrical resistance method was found to be mor( ;sensitive than the x-ray method in the identification of the phases formed during Card 1/2 L 1657-" iACCESS10N NR: AP5021417 ~beating or cooling, since it detected their formation earlier and was sensitive to i I ~their presence for a longer time. Furthermore, inflections occurring at 5500C and i4900C on the resistance curve had no equivalents in the x-ray studies. It is con- 'eluded that the resistance method is highly sensitive to slight structural changes larising under the influence of external factors such as temperature, medium, pres- 4 isure, or chemical reactions. The two all-important methods of x-ray diffraction and ~electrical resistance measurement can thus be made to supplement each other in a ';highly useful manner. Orig. art. has: 6 figures and 1-table. ;ASSOCIATION: Vostochnyy nauchno-issledovatellskiy i pmyektnyy institut ogneupor_ J1 promyshlennosti (Eastern Scientific Rese-~,rch and Planning Institute of the Refrac- ;tory Industry) ':SUBMITTED: 14Apr64 ENCL: 00 SUB OODE: GC, IC :NO REr sov: 012 OTHER: 005 Card.,.2/2 10882--�6 h] A-11A ACC NR% ATS028247 SOURCE CODE: UR/261/6~/000/006/0123/0130 q Zj "THOR: Strekalovskly, V. N.; Bessonov, A Ustlyantsev, V. M.; Burov, G. V. ORG: Institute of Electrochemistry,_ Ural Branch, Academy of Sciences SSR,(AkademtyA--, nauk SSR, UraFskiy Mal, Institut Elektrokhimil) 114 Tff LE: High- temperature x-ray diffraction stud of oxide ceramics e )W %-7 SOURCE: AnSSSR. Ural P My filial. Inatitutelektrokhimit. Trudy, no. 6, 1965, Elck- trokhtmiya rasplavlennykh solevykh I tyerdykh electrolitov (Electrochemistry of fused salts and solid electrolytet), 123-130 T- TOPTC TAGS: x ray diffraction analysis, oxide ceramic, cerium Zompound, strontium com- pound., zirconium compound, yttrium compound, nt2qymtum compound 7-1 117 -t 7 ABSTRACT: A description is given of high-temperature attachments for x-ray diffraction studies with photo- and Ionization recording of the diffraction pattern (at temperatures between 20 and 1500C). Examples of high-temperature x-ray ana!yses are given for sintered oxide materials: CeO2, CeO27SrO, ZrO27-Y.03', ZrO.-M203, ZrO2-CaO. The transitions occurring in ZrOeNd~03 and ZrO27Y203 on heating and cooling are determined. The x-ray coefficients of thermal expansion of these samples are found to be lower than the dilatometric ones. It Is postulated that the difference in the change of the lattice constant of Ce02 as L 10880-66 ACC NR: AT5028247 studied in air and vacuum to due to the formation of a solid solution of Ce in CeO. 203 In a vacuum. Orig. art. has: 8 (igures and 1 table. SUB CODE: 071, 11/ SUBM DATE: none/ ORIG REF: 008/ OTH REF: 011 U C) C,,,A 2/2 ;C NR' AP6036904 SOURCE CODE: UR/0226/66/000/011/007;&iu,,._ AU THOR: Bessonov, A. F.; Taksis, G. A.; Semavin, Yu. N. ORG: UralskPolytechnic Institute im. S. M. Kirov (Ural'skiy politekhnicheskiy institut) TITLE: Investigation of solid phase reaC-tions with the aid of a micrometric dilatometer SOURCE: Poroshkovaya metallurg~ya, no. 11, 1966, 72-76 TOPIC TAGS- chemical reaction, solid phase reaction, dimension analysis, micrometric dilatometer, dilatometer , calcium carbonate, cuprous oxide, iron oxide , material deformation, aluminum oxide, zirconium oxide ABSTRACT: A schematic diagram is presented for a high-temperature complex micrometric dilatometer. Use of this dilatometer, makes it possible to analyze in addition to changes in linear dimensions the sequence of processes which occur . and ZrO2 + CaCO ort in samples of MgO + FeO, M90 + Cu20, A120k Cu20 3 heating. The special characteristics of these processes are determined for temperature regions of existence of various phases, areas of pronounced shrinkage'- VLASOV, V.G.; BESSONOV,,A.F. Oxidation of uranium diraide kv air in the presence of added carbonates and oxides. Kin.1 kat. 4 no.5;666-671 S-0 163. (MUU 16:12) 1. Urallskiy politekhnicheskiy institut imeni S.M.Kirova. STRELOV, K.K.; BESSONOV, A.F. Classification of porosities in refractory materials. Ogneupory, 28 no.10%1+69-471 163. (MIRA 16:11) 1. Vostochnyy institut ogneuporov. 28(5) S/146/59/002/06/009/016 D002/D006 AUTHOR: Bessonov, A.G., Candidate of Technical Sciences - TITLE: ____1 Determining the Kinematically and Dynamica~ly Ad- vantageous Parameters of OGyromotor Rotorfty the Method of Dimensionless Coefficients PERIODICAL: Izvestiya vysshikh uchebnykh zavedeniy. Priborotroy- eniye, 1959, Nr 6, pp 61-67 (USSR) ABSTRACT; This is a mathematical determination of the rotor parameters on which the following rotor require- ments depend: smallest possible weight, maximum possible axial inertia moment, smallest possible aerodynamic resistance of the turning rotor in the gyroframe, etc. The proposed method of evaluating the rotor shape for determining the best relations between rotor dimensions by means of kinetic and dy- ~Jard 112 namic relations can, in some cases, be simplified and S/146/59/002/06/009/016 D002/DO06 Determining meters of a cients the Kinematically and %namically Advantageous Para- i Gyromotor Rotor by the iethod of Dimensionless Coeffi- improved. The basic method can be applied to rotors of any configuration. The article was recommended by the Kafedra teoreticheskoy mekhaniki (Chair of Theo- retical Mechanics). There are 3 Soviet references. .TION: Leningradskiy institut aviatsionnogo priborostroyen- iya (Leningrad Institute of Aeronautical Instrument IMITTED: September 25, 1959 ard 212 FESSON A .-TY-1 - A-G.- -- -- - - Aerodynamic --esistance of gyromotors and ways to reduce it. Vop. prikl. gir. no.20&-52 '60. (KRA 15:4) (Gyroscopic instruments) (Aerodynamics) 28(5) S/146/60/003/01/009/016 l(l) D002/DO06 AUTHOR: Bessonov A.G.j Candidate of Technical Sciences TITLE: On the Determination of Aerodynamic Resistanceland Friction in the Axle Supports of a_Ryr?.motor by the Coasting Method Using a Vacuum q PERIODICAL: Izvestiya vysshikh uchebnykh zavedeniy. Priborostroyeniye, 1960, Vol 3, Nr 1, pp 61-68 (USSR) ABSTRACT: The author suggests a new method for determining the coefficients of aerodynamic resistance and friction for the square dependence of both moments on the angular velocity of the rotor. The possible relationships between the coefficients are discussed in detail, and rotor-motion equations of the most characterist- ic relationships are integrated. The method is based on ex- periments-carried out during coasting under atmospheric con- ditions as well as in vacuum. The article was recommende4 by the Kafedra teoreticheskoy mekhaniki (Chair of Theoretical Me- chanics). There are 2 Sovie-t references, Card 1/2 S/146/60/003/01/009/016 D002/DOO6 On the Determination of Aerodynamic Resistance and Friction in the Axle Supports of a Gyromotor by the Coasting Method Using a Vacuum ASSOCIATION: Leningradskiy institut aviatsionnogo priborostroyeniya (Leningrad Institute of Aviation Instrument Building) SUBMITTED: September 29, 1959 C,/)) Card 2/2 AUTHOR: 87870 S11461601003100610061013 B012/Bo6o Bessonov, A. G. TITLE: Dynamic Axial Displacement of the Center of Gravity of the:, Gyroscope Rotor and Methods of Its Elimination PERIODICAL: Izvestiya vysshikh uchebnykh zavedeniy. Priborostroyeniye,., ig6o, Vol. 3, No. 6, PP. 50 - 61 TECT: The results supplied by A..Yu. Ishlinskiy's (Ref.1) and G. S. Santuryan's (Ref;2) papers are better defined and further developed here. The author studied the axial displacement of the center of gravity of the rotor in the deformation of the gyroscope rotor under the action of centrifugal forces. As in the two mentioned papers it is also assumed here that the external forces are negligibly small compared with the centrifugal forces, and secondly, that the theory of thin-walled shells is applicable. On the basis of the latter both the radial and axial de- formation are taken into account here. Also the effect of the rotor axis is taken into account, and a more precise form of ground deformation, as compared with papers (Refs. 1, 2) is obtained. Formula (42) Card 1/3 87870 Dynamic Axial Displacement of the Center of -5/146/60/003/006/006/013 Gravity of the Gyroscope Rotor and Methods B012/BO60 of Its Elimination ~Cg(R-p) R h, I A 2 2 (A?hl+2 h I)J-r (42) is derived. It gives the axial displacement of the center of gravity in' the case of a cup-shaped rotor. A series of calculations made with thi s formula shows that the latter is fairly well usable in the practice. h is the thickness of the cylindrical shell, R is the radius of the middle plane, a - is Poisson's number, C i are arbitrary constants, Ki(x) are A. N. Krylov's functions, P is giVen by formula (4) 30 - 2 (4) 2 2 R H Card 87870 D~namic Axial Displacement of the Center of S/146/60/003/006/006/013 Gravity of the Gyroscope Rotor and Methods B012/Bo6o of Its Elimination P is the radius of the rotor axis, 1 is the maximum flexure. It is shrwn that if a cup-shaped rotor has been used, it is to undergo a prior die- placement of the rotor center of mass in the inverse direction along the z-axis. This displacement should correspond to 6z. in normal opers.- C tion. Then, with normal operation of the gyroscope, the rotor center of mass will coincide with the center of the Cardanic suspension. A complete elimination of the rotor center of mass shift for all modes of operation, can be attained only with rotors having an equatorial symmetry plane. Mention is made of papers by A. I. Lurlye (Ref-3) and P. F~ Papkovich (Ref.5) as well as the tables of the functions by Freyd-Puzyrevskiy. The publication of this article was recommended by the kafedra teoreticheskoy mekhaniki (Department of Theoretioal Mechanics). There are 6 figures, 2 tables, and 5 Soviet references. ASSOCIATION: Leningradskiy institut aviatsionnogo priboros"V-royeniya (Leningrad Institute of Aviation Instruments) SUBMITTED: March 16, 1960 Card 3/3 20043 S/146/61/004/001/007/016 J3.252-0 B104/B215 AUTHOR: Bessonov, A. G. TITLE: Effect of gaps between rotor and gyrochamber on the aerodynamic resistance of a gyromotor PERIODICAL: Izvestiya vysshikh uchebnykh zavedeniy. Priborostroyeniye, v. 4, no. 1, 1961, 58-67 TEXT: It is the first purpose of the present paper to find a mathematical term for expressing the dependence of the moment Ma of the aerodynamic resistance of the rotor rotation in the gyrochamber on the gap 5 between rotor and gyrochamber. Second purpose is to find an optimum gap ~ opt by the function Ma - f(,5) with M abeing a minimum. Por the derivation of the function Ma = f(S) the author assumed that the power neoesuary for overcoming the aerodynamic resiatance, can be expressed by the relation U - Ma (1). The author then derives U as Card 1/ t 20043 S/146/61/004/001/007/016 Effect of gaps between rotor and B1041/B215 a function of S. He uses the relation dU, = 2nRHvq~Lv dv (2) which dh represents the elementary power consumed by the elementary cylindrical layer of the gap. After comprehensive calculations, the author obtains the following relation: U(6) = R 2)22~ /Ak,& + 24B 1 (24), 3 (H + E 2 ~-3 T) from which he obtains M nil 3 (H + /A k-; j+ 2vB (25) where a 2 ~T R is the radius of the cylindrical part of the rotor, H the width of this part, U the kinematic viscosity coefficient, dv the difference in the velocities of the elementary layers, and 9 the air density. If no air exchange takes place between gyrochamber and the surrounding medium (k~= 0), formula (25) takes on the following form: me = 2nR 2(H + L)VqB "R (26). The dimensionless coefficient B is 2 6 shown to give the ratio between velocity gradient in the boundary layer of the rotor, and the mean velocity gradient in the gap. The experimental values of B ranging from 10 to 30 are dependent on the gap. Card 2/A 20043 S/146/61/004/001/007/Oi6 Effect of gaps between rotor and B104/B215 The values of A are approximately unit. Since the experimental determination of A and B is diffioulto the author recommends a previously derived formula for the determination of Ida: Ma = 2nR2Rpvq (dv/dh)p (27). The distribution of t he velocity in the gap of the Rn-5 (AP-5) autopilot was measured by a water manometer. A and B were calculated according to these results. Fig. 2 gives a graphical representation of the values of Ma (Ma g.cm,,S in mm) calculated by (25), i.e. by taking into account an air exchange between gyrochamber and the surrounding medium (k 0) and also by (26) (k - 0). It can be seen that 6opt is, the.sam'e for k 0 and k / 0. The publication of this article was recommended by the Kafedra teoreticheskoy mekhaniki (Department of Theoretical Mechanics). There are 2 figures, 1 table, and, 2 Soviet-bloc references. ASSOCIATION: Leningradskiy institut aviatsonnogo priborostroyeniya 2 (Leningrad Institute of Aviation Instruments) 25556 3/146/61/004/002/003/011 Displacement of the ... B124/B206 sistem. (Mechanics of special gyroscopic systems), Izd. AN UkrSSR, 1952), G. S. Santuryan (Ref. 2: Ukhody giroakopa, obuslovlennyye deformatsiyey rotora, imeyushchego formu stakana (Deflections of a gyroscope, caused by deformation of the cupped rotor, L., 1959), and the author (Ref. 3: Dinamicheskoye osevoye smeshcheniye tsentra tyazhesti rotora i spoBoby yego ustraneniya (Dynamic axial displacement of the center of gravity of the rotor and Drocedure for its elimination), "Izvestiya vysshikh uchebnykh zavedeniy SSSR, "Priborostroyen-iyell, 1960, No. 6). In these studies the theory of thin-walled envelopes is applied, which gives enough accurate results for the total deformation. It was shown that the cylindrical Dart of the rotor deforms owing to the effect of centrifugal forces in such a way that its radial displacement w is given by the equation D - wIV + (Fh/R 2)w _(V/g)hR p2 (1). z The axis Oz is oriented toward the rotor axis (Pig. 1). In Eq. (1) w denotes the displacement of the points of the central cylinder surface in radial direction perpendicular to Oz, and D the cylindrical rigidity D =Eh3/12 . (1 _ 02) (2), Card 2/ 7 3/146/61/0Q4,1/1002 Disolacement of the ... B1214'/B206 where E is Young's modulus, h the thickness of the cylindr-'eal rotor part U --c R the radius of the centr cylinder surface of the rotor, 7 the spec-,-~ gravity of the m~:Ve-riaal. Vthe angular velocity of the rotation of" the ro".or around its axis and a Pais.sorrl-G-P.9eff icient. A gene3~Ll solution of (1) is represented by the equation (Z) + 7,2(3), where Ci represents arbitrary integration constants '0o be determined,,'Ili the functions by A. Nt. Krylov, which are mentioned ---r Refs. 2 and 3, and vit gives the special solution of Ea. (1), for rhich.the correlation W2' = TS~2 R3 /gE (4) holds. For the displacement w of-the points of the central cylinder surface in radial direction unler th'e effect of thb temnerature field alone, `3 = Rat -P(z) (5) holds, where a is'-the temperature expansion coefficient. For the total disolacement w of'the points of the central.-cylinder sur'ace under effect Card 3/7 A S/1 46161100411002 /C,.) 9/c 11 Displ6cement of the. 3124/32o6 of centrifugal forces as well as the temperature field, expressed'as the sum of the corresDon g displacemerts, V? - NV 1+ VI3 Ci *Ki + vi2+ Rat - -o z) (6). Fo'r the required displacement of the center of gravity,6z, A Z" (R - P)- (C h, (R2 + p2) 2 2 + R a t (0" 2R-(Wh-, + 2hI) 2h (R - N, + N2) 7?-(R- -h. T-11-ily is derived, vhich changes into form Aze='-L~R-P), [C2+Rat-p.,(O)j - h, (R2 + p2) *2 2R (I?hl +-')I,/) 2h +Rat- dx~p (x) dx + R(Rhj+2hI)-pS - JW2- -0-L2) I 0 0 pi Card 4/7 +fx-p(x)dx]+A,.C~+A,.C2+A,.C,+A,-C, (64), 0 inn in S/ l Z. ') , , / 6 1 /00 D4snincement of the.... 3 12 4 /31 2 C DS for the purpo3e of simolified comparison of the center-o-f-gravity ment rith and without 'OemDerature field, Aj being dete.rm-ined from. equat-;ons +a):K3; As K4 + I + K Al 4 K,+, A2=Kl a) - K4., A4-4 K,~ and t *he values of Ki taken for x =01. Ecs. (65) obtl-ined for the deter-mina tion of Ai-i -1...'4. are the same as in Ref. 3. The establi'si,ed displace 9 ment*of the center of gravit' of the' rotor can also be obtained by heating Y 0 the rotor shaft. The values for the displacement i'-'zc of 'he center of, G-~avity of the Totbr with the parameters R 5- cm, h = 1 .22 c--, h0.4 cm, 3 6 1 = 3 - 0 cm, (5 = 0 - 3 , Y = 7. 8 g1cM,~'e = 3000 sec-' , B = 2. 1 , 10 kp,/c,-a are given finally in Table 1. The experimental results "or ~zc agree Aith those calculated from Eq. (64) and results from previous studies. The data -mentioned in Table I characterize 'he disnlacement of the center of gravity of the rotor ozing to the effect of the rotor deformation --*Itsel-L; they cannot be used for the direct determination of the gyroscope errors. The Card'5/7 25556 S/146/61/0041/002/003/01 1 Displacement of t e ... B1241/32006 deformation of the gyro chamber and the bearings .-,could have to be considerej additionally. A. I. Lurlye (Ref. 4: Statika to-kostennykh U,3rugikh obolochek (Statics of thin-v;alled elastic envelopes), Gostekhizdat. 10,47) is mentioned. T~'31-~*"study has been recommended by- the. Depar'tment of Theoretical 'Ifechanics. 't'here,-:r-e,-2 fiCures, 1 table. and 4 Sovict-bloc refevences. ;'-SSOCIATIOIT: Leningradskiy institut aviatsionnogo priborostroyeniya (Lenin.-rad lnsti~ute of Aviation SU-3111,=TED: June 27, 1960 6 Card 6/7 28958 8/14 61/004/003/007/013 S-~q 0 D217YD301 AUTHOR: Bs~seq~on y-k-Go TITLE: The comparative advantages of some gas media in gyromotor chambers PERIODICAL: Izvestiya vysshikh uchebnykh zavedeniy. Priboro- stroyeniyep v. 4, no. 3p 1961, 68 - 74 TEXT: The gyrochambe* is either evacuated or filled with gasp in which case it must provide maximum cooling and not introduce com- plications into the chamber. It is necessary to find an optimum medium. The momentum of aerodynamic resistance Ma = X xcr T R5 1_12 where R - rotor radiusp c,, coefficient of aerodynamic resistance per unit of rotor surface, - medium density, 11 angular velo- city,,)f - form factor. As Ma is proportional to the filler must Card 1/5" I 28958 S/146/61/004/003/007/013 The comparative advantages of ... D217/D301 be of the lowest density possible. c T depends on Re and M numbers. For the analysis graphs c,, = c IT (Re ) and c.T = cIT (M) where M is ta- ken from an article by I.L. Povkh (Ref. 3: Aerodinamicheskiy ek- speriment v mashinostroyenii, Mashgizp 1959). From Re = V (3) where V - coefficient of kinematic viscosity, and the graph (Fig. 1) the gas with the lowest 9 must be chosen. From M = _Z_ (4) v3B and the graph (Fig. 2) the gas with the highest speed of sound must be chosen. Data are given In tabulated form for gas fillers at t = OOC and p = 760 mm.of Hg. For low F the best gases are H and He, ~The lowest viscosity is exhibited by a,-.monia and methane At Re > 106 the reduction Re 7 - 8 times hardly affects c. . ?or Card 2/R1 28Y58 S/146/61/004/003/007/013 The comparative advantages of D217/D301 ~n air filled gyro with Re 'C~4 104 exchange of air for E or He may increase cl, 6 - 8 times. The reduction of aerodynamic resistance by changing from air to H, 14 foldt air to He 7 foldt may be ob- tained for high speed gyros, for which Re -;;_106* Ammonia and metha- nep if used at all, may be used for low speed gyros. It is shown that all gases are better than air. A comparison of Ma for air with other gases is also given. From the view point of minimum Ma the best gases are H and H v even at normal pressure. lieduced pressure produces reduced Ma but as this may increase the weight and deform the chamber it is not always recommended. It is produced a) in the stator and rotor of the gyrop b) in the bearing of the main rotor axis, and c) in the gas medium. Heat in (a) cannot be reduced; heat in the bearing can be reduced by approplate construction; heat in (a) can be removed by convection, conduction and radiation, It may generally be said that heat dissipation will be improved if a gas with a large specific heat Op and large thermal conductivity Card 31~r 28958 3/146/61/004/003/007/013 The comparative advantages of ... D217/D301 is used. The most advantageous is Ho and then He# In concluAon, a vacuum doe* not give great advantages compared with H or He& There are 3 tablesp 2 figures and 5 Soviet-bloc references. ASSOCIATION: Leningradskiy institut aviatsionnogo priboroBtroyen- iya (Leningrad Institute of Aviation Instrument Con- struction) SUBMITTED: October 12, 1960 Card 4 AUTHUR: Bessonov. A,G..- S/'146/()l/'L)04/ 004/ 009'u'. 5 D201/D306 TITLE: On computing the aerodynamical res-Ls-cance of a gyro- motor PERIODICAL: IzvesTiya vysshikn uchebnyjch zavedeniy. Priborro stroyeniye, v,, 4. no, 4., iq6i., 61 - 7u TEXT.: In designing a gyroscope system it is necessary To know the moment M of the motor and its aerodynamic resistance together wa-~h the coeRicient C of the moment Ma and coefficient Ox of tbe re sistance of the elementary area dS of the rotor surfaced. The acithor derives a more accurate expression for Ma, The formula reflects The interdependence between the geometrical dimensions of the rotor, the width 6 of the gaps between the opposit'ir faces of the motor anci the body of the gyro, the angular frequency of revolut-ion i-L of the rotor and its max, radius R. the division of surfaces of the rotor into I'disc" and "cylindrical" domains and the properties of the fl-as trilling the gyro chamber,, The formula is derived for a par-- Card 1/,'~ 2 ~_,, t; 1; --1 S11 14 6/61'/004/004/ 009/01 -5 On computing the aerodynamical D20!/D30b- ticular shape of the gyromotor, The motor is taken as having an equatorial plane of symmetry~ For such a motor t-he expression four the toTal aerodynamir, resistance of the motor discs Mad !~'7 aerlv,~41 as ~0.2 r 4.8 5a- M 1.2 R, ad where Re is the Reynold~a number,, a OoOll. and gaps, Formula (1-7) permitz evaluation of the part. of h e 'r c) a 1 'mm of the aerodynamic gyromoTor resistance due L (1 4- j d_Lsc pa. s the rotors To find the Total value of Ma - thF~ c) Tri p (', r. T;' ;:., the moment must be determined which represents th e r ~r- ci a s t ;~,ned to cylindrical surfAces of the rotor. 1% is pointed :m~-: that rhP ex, pression for Ma does not include 'the eff-e,--,t of the res_istan~,e, "1"i! to the inner cyiindric.al surfaces of the ~-otor and cannot-,. the~~El,:., re, be used. The expression for -.his total momenT -a-Be 2 -X, Card 21.3 Ma lc25 29645 S/146/61/004/004/009/015 On computing the aerodynamical D201/D306 4.8 H [(_I_cz_i -0.2 ri. 108 -0.2 1 R) R + k- (-R 2 5 p.a R (31) is derived which is the required solution of the problem, It must be remembered that the ratios WR) should not exceed 0.05 - 0.10, More exactly, if (6/R)opt is the value of the gap corresponding to the minimum aerod amical resistance, then the derived formulae are vali,". for 6/R -,< (F/R) opt and for larger values of 5/R wouid cj.,)duce erroneous results, It is stated that the present work does not Sol-- ve the problem of the optimum value of gas (6/R) and of the minimum aerodynamic resistance & a min. This article was recommended by the Kafedra teoreticheskoy mekhaniki (Department of Theoretical Mecha- nics). There are 2 figures and 5 Soviet-bloc references. ASSOCIATION: Leningradskiy institut aviatsionnogo prioborostroyeni- ya (Leningrad Institute of Aviation Instrument Construc- tion) SUBMITTED: October 14, 1960 Card 3/3 /-3, ;Z.,~-;?,O 3cssonov, A.G. T 1 T'4 -2, Vacu-,,M in the cyroscopic acrocILYI-L---ilical resistance 1,--vestiya vyschilch uchebayl-.1i stroyeniye, v. 5, no. 3, 3 906 3 S/146/62/005/003/011/014 D234/D-303 chamber and the problem of of gyroscope motor zavcdc-,liy. Priboro- 1962, 91-98 of the T,)aT)cr is to prove that the intro duction, Of vacuum i:-l thc gyroscopic cham 'Der. does not solve the prob 0 lcm 0~-' acroclynczli'cal resistance, and to -Eind the-most suitable way -1 vin,, 4t. The author ~--nds ~rozi the ': s ol 11 - j. -- L formula of mean free path o 0!: -lc molecules tile oressurc at -71hich the acrod-namical resistance -.-)ractic ally disaln?ears. It is concluded that vacuum leads to an in- crcao,- of -7L,.-ihcro.-,"cncitv offf tCr,,-,Cra~jjrC whic-h causes defornia- tions of all -,?arts o.-"': the motor; the chx,,.bcr housing must be made stro-n-,-cr for the -%racuum, which increases the weight of t: 1ac cla:-::6ber a-..d -its mozicz,.ta o-f iner-cia, cmd t1herefore decreases the accuracy O-LE, tl,-,c 1-strume-at. Me author discu sible improve- Sses Pos Card 1/2 S/146/62/005/003/011/014 Vacuim in the gyroscopic ch=ber ... D2.54/D308 -ents sur,'rested by him, in previous publications a-Lid concludes that OL~ azi a a -D-Dropriatzc solution is to -Fill the chLan,!Der with H or He at hIf the 'ai-Mospheric --)ressure and to i)rzovide -for a rational shape of the rotor, optinal -,a,,)-- between the rotor and the chamber and adequate fi-iiis'laing of the rotor'surface. There are 2 figurcs.and I table. ASSCO lz'~Ticjiq. S j.T,.'1TTED Leninrradskiy institut aviatsionnorlo priborostroyen- iya (Le-riingrad institute of Aircraft Instrument Con- struction) December 25,. 1961 Card 2/2 393U S/146/62/00.5/004/010/013 D295/D-:'?03 zTMOR: Dessonov, A.G. T I TIE: Determining the optimum clearance between gyro- chamber and rotor and the optimun smootluxiess of their surfaces .)E~~'IIODIC.E: izvestiya vysshilth uchebnykh zavederdy. Pr~iboro- stroyeniye, v. 5, no. 4, 1962, 63-70 =-T The optinium clearance 6 ODtI between rotor and gyro- chamber of given georretry is defined as the value.that minimizes, 0 -ror a given gapeous medium, the aerodynamic resistance of the gyro- C~ motor. As theOretical formulae give contradi(~ting -figures, an ox- porliric-ntal x3 roach to its determination is su--csted, op. the assum-p- tion that a pr t t gyro-motor is available havi achiev- es; o ype ng M.-Imum - able smoothn of the rotor surface. For values of 6 of the-order Of opt Lhe aerodynamic resistance torque, Ma Iis considered to be a -Lcunc;ion ~f 6 of the type Ma . A -1 + BS + C. Three measure- Mants Of Ma 14iji,l suffice to determine A, B and C and hence Card V2 __10 2 AWT (1) A-wT Lm)A-,',-0Xk~-2 /3w r' L -EWTjd #SS- (c) IJP(c) JD ACC-M., AR6o16445 SOURCE CODE: UR/0124/65/000/012/AO07/AOOB 32 AUTHOR: Bessonov. A., G. TITLE: Relationship between the acceleration parameters of a rotor for the case of pulsed,gyroscope starting 160uRCE: Ref. zh%ekhanika, Abs, 12A60 iREF SOURCE: Tr. Leningr. in-t eviats. priborostr., vyp. 44, 1964, 105-110 TOPIC TAGS: gyroscope system, motion mechanics ABSTRACT: The author formulates, solves and analyzes differential equations for ac- ,celeration of the rotor in a pulsed gyroscope. Consideration is given to the reactive moment, aerodynamic drag and friction in the bearings caused by dynamic reactions fro6 imbalance, as,well as variability in the axial moment of inertia of the rotor in the general case. A rather simple interaction is established between the basic accelera- tion parameters., S-ary. [Translation of abstract] ;SUB CODE: 17 L 42V4_6~ Pn-4f'Po-4/Pd-I'Pe-5'Pa-4,,'P---"!PR-4/PI-4 BC ACC=ION NR: APS006643 S/0146/65/006/001/0113/lOIZI AUTHOR: Bessonov, A. G. TITLE: Fundamental interrelations between the design and aerodynarnics of spin motors SOURCE: IVUZ. Priborostroyeniye, v. 8, no. 1, 1965, 11113-121 TOPIC TAGS: gyro spin motor, aerodynamics ABSTRACT: Three tables sho-whig the interrelations between aerodyTiarnic- resistance factors, spin-motor operating conditions, its application, its manu- facture, etc., are presented. The aerodynarnic resistance depends on the rotor angular velocity, rotor shape and size, gaps, gas medium, drainage, and rotor surface machining. The spin-motoT characteristics connected wilh its aero- dynamic resistance are: required gyro accuracy, time of operation (frequency o.f use), power consumption, external medium characteristics. pressure, Card I JZ L 47474-65 ACCESSION Nn: A.PS006643 manufacturing facilities, economic requirements. Possible designs include these, factors: rotor shape (equatoriaUy symmetrical, asymmetrical); &yro chamber (sealed, draine~d); gas medium in the housing; Saps between the rotor, housing, and stator; screws, balancing countersinks, nozzles; internal baffle plates. 'TI-c- above three tables and auxiliary curves facilitate designing spin motors for minimal aerodynamic resistance and comparing the variants. Orig. ari. has. 2.'rIgUreS and 3 tables, ASSOCIATION- Leningradskiy institut aviatsionnogq -priborostroveniya (Leningrad InBtitute of Aviation Instruments) SUBIaTTED: ISDec63: -ENCL: 00 SUB CODE: NG NO PLF-F SOV: 006 OTHER: 000 4 C*rd'2/2., L 04444-67 EWT(d)/Fsg~.Z/E*T(1)/EWP(m)/EW-.(*)/EEC(k)-2 JD _46/_ ACC NRt AP6022061 SOURCE CODE: UR/61 66 009/003/0093,0099 AUTHOR: Bessonov G. ORG: LeninKrad Institute of Aviation Instrument Construction (Leningradskiy Institut aviatsionnogo priborostroyeniya) .5. TITLE: Methods of approximate calculation of aerodynamic losses in a gyromotor SOURCE: IVUZ. Priborostroyenlye, v. 9, no. 3, '1966, 93-99 TOPIC TAGS: approximation calculation, gyroscope, aerodynamic drag moment, rotor ABSTRACT: The aerodynamic drag of a cylindrical rotor is determined by the additive method, proceeding from the fundamental formula for the drag coefficient of cylindrical Bud disk-shaped surfaces. The dimensionless factor appearing in the expression for the coef- ficient of the moment of aerodynamic drag of a real rotor is determined for the following casesi 1) taking Into account the rotor-stator unit, a) for the laminar-with-vortex regime b) for turbulent flowpast; 2) taking into account the tapering-off of a real rotor; 3) taking into account the increase in aerodynamic drag due to the presence on the initially smooth surface of various imperfections (bolt sockets and heads, balancing countersinks, etc.); 4) taking into account drainage of the gyrochumber by the surrounding gas medluni; 5) taking into account Increased ii-ioment of resistance due Lo acceleration of the rotor by impulses deviating from the flow rate. Card L 044-44-67 ACC NR: AP6 It is concluded that these Individual factors may be expressed with an accuracy on the order of 10-15%, especially with regard to Case 4 and perhaps case 3. On an average the accuracy of final results is completely satisfactory and the calculation time required Is extremely short. Orig. art. has: 17 formulas, 3 figures, and 1 table. SUB CODE: 17, 20/ SUBM DATE: 21Apr65/ ORIG REF: OOG/ OTH REF: 002 Card ARTOBOLEVSKIY, I.I., akademik, doktor tekhr. nauk, red.; LEVITSKIY, N.I., doktor tekhn. nauk, prof., red.; KOZ1!1n11I1.OV, s.I.I., red.; KOB-HINSKIY, A.Ye., dolrtnr te-khn. nauk, red.; P-ITROKAS, L.V., doktor tekhn. nauk, prof., red.; GAVRIL124KO, V.A., Uoktor tel'in. nauk, prof., red ~Y, A.I_.,,kand. tekhn. .jj.AES�M, nauk, red.; SIIEKIIVITS. E.I., kand. tekhn. ii~uh, red. [Theory of autoratic machines and of hydraulic and pneumatic drives] Teoriia mnshin-Rvtoniatov i L!idro-pnevr,.opi-ivoda; sbor- nik statei. Moskva, Mnshgiz, 1963. 327 p. (Its: Trudy) (1-111RA 17:10) 1. Soveshchaniye po osnovnym problemam teo-rii mashin i irekha- nLzmov. 3d, Moscow, 1961. 2. Chlen-korresponuent. AN UkrSSIR (for Kozhevnikov). --Pa- 4e'Pr"4,-s-;4/. Nab- I W/ ACCESSION N-19- AP5012099 UR/0191/65/000/00~/0003110004 ,71 AUTHOR: Bezsorov, A. I.; Vitushkin, N. 1.% Glazunov,-P. Ys,-~ ;7 Kar ap e t 'rfanoviShjL B. 14. Ry~~bchi-koy-a, -G.-C. ~aii Jch, A. A. TITLE: Unit for gaz-phase radiation-induced I _graft Poly-erization: SOURCE: Plasticheskiye massy, no. 5, 1965, 3-4 ITOPIC TAGS: graft polymerization, gas phase graft polymerization, Iradiation induced graft polymerization 1ABSTRACT- A -nilot-olant unit bas been built for producing various graft polymerIzation Droducts (combining the advantapes of the con- stituents) by the technique of gas-phase radiation-induced graft ~polymzerization in quantities sufficient for technical testing. The lunit is suitable/for grafting polymer molecules tothe slurface of -F~ics, and HIns" !mineral powders'! and s~ntbetic and 'mineral fibe~s~,-` by irradl-a-t7-nE~-them with fast electrons in an atmosphere of gaseous i monomer and inert gas. The unit is designed to operate e-itn-~-I' with monomers whose boiling 'point In above room temperature (Fig. I of thel Enclosure) or 2) with monomers which are normaily gaseous, In the i t Card... 11.11 44*63=45- ACCESSION TIR: AP5012099 first case, to prevent monomer vapor condenstion in the reactor a~nd the pipe, the liquid mononer temperature in the feed tank is"alwP110 maintained 30-50C belov the working gas temperature. In the second case, the gaseous monomer is fed directly fron a pressure cylinder. Two reactor types are available: one specifically designed for fibers !filnr,, and fabrics, and the othor, for powders. The exverimental re- sults shown in Table I of the Enclosure were in good agreement with results obtained in glass ampuls, indicating the feasibility and ex- ~ 'pediency of the scale-up of this process to full-5cale plant equip- Iment. "The authors expres3 their appreciation to B. L. Ts-etlin for I ,participating in the discussion of the project and for valuable advite~ ~during startup, and to N. V. Mikhaylov, 40' G. Tokareva, and Ye. V. Yegorov for valuable advice on design problems. Orig. art. has- I figure and I table.' ASSOCIATION: none !SUBMITTED: 00 ENCL: 02 SUB CODE:00)GC ~NO REF SOV: 005 OTHER: 000 ATD PRESSt 3246 214__ IQ-qn11QW1 116; GELIBUKH, L.A.; YELISTRATOV, I.F.; SMIRNOV, V.A.; TARSKIY) YU.S., kapitan 2 ranga, red.; CHAPAYEVA, R.I., tekhn. red. [Underwater search] Podvodnyi poisk. Moskva Voenizdat, 1963. 93 P. ~MIRA 16:10) (Diving, Submarine) (Underwater television) (Underwater acoustics) USSR/Engineering - Soil'Mechanics Ca~rd 1/1 Pub. 4,1-12/17- FD-1458 Author Artobolevskiy,-I. L Bessonov, A. P., and. Rayevskiy, N. P., Moscow Title Dynamic curves of soil pressure on a pile driven by the vibration method Periodical : Izv. AN SSSR. Otd. tekh. nauk 7, ll6-l2l,.10kj$11 Abstract ! Describes apparatus used and gives results obtained in an experimental investigation of the effective pressure of-soil on a pilC- under cbndi- tions of vibration pile-driving.- Obtains curve of soil pressure on the butt o~ a pipe and a curve of the displacement of the-pipe during proc- ess of vibration p~le-driving as,a function of time. Oscillogram; dia-' grams; graphs. Seven references Institution Submitted September '3, l9r-4 124-1957-1-161 Translation from: Referativnyy zhurnal, Mekhanika, 1957, Nr 1, p 17 (USSR) AUTHORS: Bessonov, A. P., Dubrovskiy, V.A. TITLE; On A. 1. Taynov's Paper "Kinematics of the Assur Groups of the Second Class, Second Type" (0 stat'e A. 1. Taynova "Kinematika grupp Assura vtorogo klassa vtorogo tipall PERIODICAL: Izv. AN BSSR, 1955, Nr Z, pp 143-146 ABSTRACT: Instead of applying the well-known method of geometric loci to a kinematic investigation of the Assur groups of the fourth class, A, 1. Taynov (RZhMekh, 1955, 47) attempted the develop- ment of a simpler and more direct method of investigation. The Authors have shown that A. 1. Taynov's methods appears erroneous in principle and, therefore, that it cannot be used. 1. 1. Artobolevskiy I. Mathematics--Critic Bessonov, Al P.] kandidat tehlinicheskikh nauk; Card 1/1 ARTOBQIXVSXIT,1.1., akadsmik; BMCIWOV A.P.0 kandidat tokhnichoskikh nauk; 9 0 SHLYAMMIN,A.Y., amULIT 1&srXHcS'8~ uauk; KITDi,V.I., redaktor; YM r I I P.A.. akademik. redaktor; PAVIA)VSKIY,A.A., tekhaicheskly redaktor (Vibrating machines] 0 mashinakh vibratsionnogo 4Lqjgtvii&. Moskva, Isd-vo AkmAemii nauk SSO, 1956. 45 p. (MLRA 9:3) (Vibration--Industrial anlication) 6