SCIENTIFIC ABSTRACT KHANSEVAROV, R.YN. - KHANUKAYEV, A.N.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R000721730009-2
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: September 17, 2001
• Sequence Number: 9
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

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89297
S/181/61/003/001/036/042
B102/B204
I, Yl 77
AUTHORS: Ryvkin, So Me, Paritskiyj L. Go, Khansevarov, Re Yu., and
Yaroshetskiy, 1. Do
TITLE: Investigation of the kinetics of impurity photoconductivity
for the purpose of determining the parameters of local
levels
PERIODICAL: Fizika tverdogo tela, V. 3, no. 1, 1961t 252-266
TEXT: An investigation of impurity photoconductivity is not only of
interest in principle, but is also of practical importance for studying
the local electron states in the forbidden band and especially of its
interaction with exciting radiation. Apart from an earlier paper by the
authors, relaxation processes of impurity photoconductivity have hitherto
not beer. investigated in detaill this was, however, the aim of the present
voluminous paper. The authors set themselves the task of investigating
theoretically the most important cases of photocurrent relaxation during
excitation in the impurity region. The rules governing the kinetics of
impurity photoconductivity have certain peculiar features as is shown
Card 1/8
B11811611003100110361042
Investigation of the kinetics of... B102/B204
here, due to which impurity photoconductivity relaxatior differs
essentially from that of intrinsic photoconductivity. An exact analysis
of these rules Bhows that an experimental investigation of the kinetics
of impurity photoconductivity may serve the purpose of determining
various parameters of impurity centers as, eog.9 the photon capture cross
section, the trapping cross section for free carriers, as well as the
energy position of the impurity level in the forbidden bandt the
concentration of centers and the degree of their completion. In part I
of this paper. the most important rules of the kinetics of impurity
photoconductivity in the excitation of carriers for one type of local
centers are dealt with. This is done on the basis of an example of a
semiconduitor, in whose forbidden band there is a sort of local level
with concentration M; these levels are assumed to be in the upper half of
the band, so that they are in heat exchange with the conduction band.
This semiconductor is irradiated witl- monochromatic light of such a
wavelength that only electrons pass from the local levels onto the
conduction band, and that monopolar impurity photoconductivity occurs.
The equation of motion (13) d An/dt - (m 0- an)qJ n(N cM+M-M O+n 0+,dn)
Card 2/8

S/181/61/003/001/03$/042,
Investigation of the kinetics of.., B102/B204
is set up, where q is the capture croes section of an electron on the
M-level for a photonj m - mb- Am is the electron concentration on the
level MI I is the redombination coefficient; J is the light intensity;
n=n,+ 6n.is the electron* oonGentration in the conduction band; no is the
dark'concentration of the electrons; Nctj is the effective state density
in the conduntion bandf-and. Am - An. The solution in the case of
excitation. by square light pulses is, for the case of growth (switching
on o,f light), given by
'%nm.=Ath(jAt-t-B)-C, (1, 6~
rAC
2C
A B=-11n
~C- -#7 MO 2
C 7 (N,.v -i- Min -I- n' -4-
and for switching off
Card 3
a z:;'.~
W-1
F

S/I 8116110031001103 61042
Investigation.of the kinetics. Of.'. 3102/B204
4n 4i~p,
(1.7)
I Jan. I.. I
xp
(N,~r M M n
0).
and the steady concentration of non-equilibrium carriers is given by
jr4-Af -ntO-+-nO-I--
X.
4mql
Uj
M 4-,n
0 9
For low light intensities, .6 n m qJ/Y(N +M,.m +n and f or high
at 0 at 0 a
intensitiest '~L n mo* The equation of motion is solved also under
Card .4/8.,

8Y.297:
'S/1-81/61/003/001/036/042
Investigation of the kinetics of.,# B102/B204
conditions and for different special oases' and expressions are
derived for the relaxation times. The dependence of relaxatiq&.times on
light intensity is investigated, a~eexplioit forjulas 4re derived,for q.,
In part 2 of this paper, of a cons.tant-expo~ure in the impurit"
Y
region upon the kinetics of*
u
imp rity. photwonductivity 'is investigated.
(1-3) acquires the form-
d-in
n,)qAj-TAn X
qjO
~X _f M-M -4-n --t- 2n An --t- --1- qAj (2.1)
0
where J is the intensity of constant exposure, 6, Jthe amplitude of the
0
square light pulse, and nj the steady carrier concentration in the
0
rop, steady) have the form
conduction band. The,solutions (growth, d
6nH . 6n a t 11 0 XP t/,ru)] An, 6nstexp(-t/,r,); and
Card 5/6

89297
8/181/61/003/001/036/042
Investigation of the kinetics off4f B102/B204
(2.13)
An m ri,,)q AJTT For 7
st 0-1
0 H n -1- nj
'0 - ni.-
= - n
M.
is obtained. In part 3 of this paper, the effect of constant exposure
within the region of intrinsic absorption upon the relaxation of impurity
photoconductivity is invoutfgated. This is done on the basis of a simple
example of "absolute adhesion levels" (levels for which the trapping cross'
sections for carriers of one kind vanish) for short-wave exposure of
intensity I,.which conveys electrons from the valence band into the
conduction band; electron-hole recombination ian carried out over the
level S. Hero, the most simple case of monopolar electronic intrinsic
photoconductivity in linear recombination of free electrons is
investigated. The kinetics of the electron transitions is described by
the system
Pkj In (M in) -i- TmNM -I- qInj- (3. 1)
dM Tn (M - in) - 7mNm - (3.2)
qmj,
Card 6/6
HO 9 1
v!
g
Z

S1181V611003100110361042
Investigation of the kinetics 0f.00 B102/B204
where in the quantum yield of the intrinsic effect, k the absorption
coefficient in the intrAnsiq region', whose solution for,switc.hing tn
long-wave light is giveh.,by
9MOAj
An exp
(3-9)
rAe
q.
rl.
qAj
4 TS
and for switching off-long-wave light by
Card 7/8

3/18 1161100 3/001/0 3 6104 2
Investigationof the kinetics of B102/B204 -
(3.10)
exp (rf)],
An Z~Iexp
(.L -I- all
T71
2
The course of the relaxation curves is discussed in detail. The authors
thank Yu. A. Zibuto for help in calculations. There are 11 figures and 8
5 Soviet-bloc and 3 non-Soviet-bloc. _J,
references,
ASSOCLWION: Loningradakiy fiziuo-tekhnicheskiy institut AN SSSR imeni
- A. F. Ioffe (Leningrad Institute of Physics and
akad,
Technology of the AS USSR imeni Academician A. F. loffe)
SUBMITTED-. July 1 1960
Card 13/8
T;1

RYVKIN, S.M.; KRANSEVAIM, R.Yu.; YAROSIIVISKIY, I.D.
Impurity photoconductivity in germanium irradiated by gamma-
quanta. Fiz.tver.tela 3 no.10:3211-3219 0 ;61. (14M 14:10)
1. Fiziko-tekhnicheskiy inBtitut imeni Ioffe AN SSSR Leningrad.
(Semiconductors, Effect of radiation on~

L 19568-63 EWP(q)/EWT(m)/EW~(B)/BDS A1Fj 09/2704/2706
11;~ 0 T 'YO05
ACCESSION NR: AP3007517 S/ 1C1e3 J?O
AUTHOR: Khansevarov, R, Yu.'
TITLE: Investigation of impurity conductivity in germanium ix
radiated
with fast electrons 7
.SOURCE: Fizika tverdogo tala,.v. 5, noq 9, 1963,.2704-2706
TOPIC TAGSi irradiation, radia.tion affect. radiation damage, impurity
1
photoconductivity, fast electron irradiation, irradiated germanium
radiation defect, n.type germanium,
ABSTRACT: An exp6t~mental study was conducted of impurity photo-
conductivity in n-type Ge with an initial concentration no. - 2x165 cm-3I
bombarded with 2-Mev electrons~ The degree of irradiation was such
that the Fermi level was located sufficiently high above the Ft -0.2ov,
level so that at the temperature at which measurements were made
(80K), the Ec - 0.2'ev level was practically filled with eleccrons.
It was-determined that when the Fermi'level lies between the Ec and t
Ec - 0.2 ev levels,,the impurity phttoconductivity of Ge bombarded
with-2-Nev electrons is of the same type-as that of Ge irradiated
Cord 1/2 -

S
L 19568-0
ACCESSIQN NRj AP30 07517
with 2-kev *-rays. The kinetics of impurity photoconductivLty'La in
.qu Alit tive agreement with previously developed theory (FTT, v. 3,
25Z, 1;61). The results of the paper cited were used to determine
the,cross section for cip'ture of a photon (q) by an electron and the
coeffir'.iont of recombination (Yn) of electrons for the Ec - 0.2 ev
leveld It was found that for 0.3-ev photons q - 4-8xlO-16 cm-3 and,
yn - 0425-1XIO-12 cm3sec-~.._ A- decrease in photo conduc ef-ifty' 'was
observed in all of the"specimens. "The author thanks S. M. RY*vkjn_
for a tscussion of rJults and Y. D. Yaroshetski for,providing
the speqLmens of irradiated Gee"'_Orige arts has: I figures and 1
table.
ASSOCIATIPN: Fiziko-tekhnicheskiX instLtut im. A. F. Ioffe, AN SSSR,
Leningrad (Physicotechnical Institute, AN SSSR)
ISUBHITTED: 20Har63 DATE ACQ: 140ct63 ENCL: 00

ra a ti I urn -1 e a.
irrsdiationj deLect level

V,~ i~4

Ll-y I;Ll

i Card 2 P

Uiflm) E
ACC NRt Al'6011352-1
GouRCECODE: bTo~01/66'Or;&O.'
AU',7,iW: ~,,,Aohovets T. V.', Yhan6CVarOv,,R-YU-
im. A. F. Joffe, AN SSSR, Leningrad (Fiziko-
inrUt te All 55SR)
I u
!Ajw-temperature ganna Irradiation and annealing of indium antimonide
z;oui~,C*E: Fizika tverdogo tela, v. 8, no. 6, 1966, 1690-1697
TOPIC 'D%GS: intliurn compouni, indium antimoni de , irradiation, annealing, resistivity,
Hall constant, photoconductivity, radiation damage, crystal defect
A;3STRACT: In YlLv or 'the acwcity of published data on the effectof gama ilTadittion on
li0b, the auftrs irraRatal n-type InSb at 77ck (dose rate 2.4x1010 phot=An~e see) with WtLal electri
~proity 2.9 x V3- L6 xrP cri- 3 and p-type InSb with initial hole density 5.3 x 1013
- 3.3 x lo." CM-3. Tha resistivity, Hall constant, and the spectral distribution of
the Iffiotoconductivity were measured before and during irradiation, and during the
subsequent annealing. 71he test results are used to determine the rate of defect
formation and the extremal positions of the Fcrmi. level as functions of the irradia-
tion done. 'Ilip results indicate that the defects produced by irradiation act aa
ionized scattering centers, and that the rate of defect formation is a rather com-
plicated function of the Irradiation doge. Some hypotheses are adwmced concerning
the enertnr level scheme of the irradiated indium antimonide. It is concluded that
L
ACC NR,
A"1852-(
""here are sQveral :" ~ ?
imultanemis . ....
Of the radiati.or, -'Z( 11ctir1g lnechlnismg affecting the course of annealing
carrier (ley),; j 41..y and tj~tt t,v rate of' t'his annealing depends on the initial
defectn, in tho -er!'JeOrIdUctor. InvestiFation of the i-sochronous annealing of
i .5001'
thus indicaLi , Yielded results that agree with Publivhed data,
_rq~ that thcne proccoves are governed by the main defeetn always produced
after _frradiatjon. Two 1"els r. - 0-083 and FV + 0.048 ev, are credited to radia-
tion defect[3 'Ind are classifie)
authors tjijrj~,, d as donor and acceptor levelsy respectively. The
and for inkirest, V. V. Galavunav-for supplying marW samples,
_j4. ~y,L
_tj ~jrja for help 'with the measurel~e--nf,-S.--br-l-bLrt--~b
tables. go as: 7 figures and
[02)
SUB Coj)E., 20/ SUBM DASE. 16oct65/ ORIG REF1 007 OTH REF- 003/
AT-D P jj 1,;S : 5-- j :2 111

ACC N" AP7005205
systems of solid solutions, the initial components of which have d-Jiferent zonal
structures, it was concluded that the zonal structure of solid solutions of the givenii
system changes with alloy composition of 2CdTe- 3CuInTe2 and that the zonal
structures of CdTe and CuInTe2 are different. Orig. art. has: 2 figures.
[Authors' abstract] ANII
SUB CODE: 11, 20/SUBM DATE: none/ORIG REF; 005/OTII REF: 002/
card 2/2-

ACC NRI AP701314O soUtxE COE)T- U.V04491'67!00l 001/0141!0143
AUTHOR: Coryunova, N. A.; Tychina, I. I.; Mansevarov, R. Yu.
ORG: Physico-technical Institute im. A. F., Ioffe, AN SSSR, Leningrad
(Fiziko-teldinicheskiy institut AN SS.SR); Kiev State Pedagogical Institute In.
A. M. Gor1kiy (Kiyevskly vosudarstvennyy podagogicheskly Institut)
TITLE: Soma photoelectric properties of monocrystals of ?t-CdGeP sub 2 and
p-ZnGeP sub 2
SOURCE: Mika I takhnika poluprovodnikov, v. 1, no. 1, 1967, 141-143
TOPIC TAGSI vapor pressure, photoeleetric propertyp germanium single cr.-stal,
single crystal growing, IR photoconduotor
SUB CODE: 20
ABSTRACT: The vapor?,pressur es.of aii three' components in the compounds tested"
in this article diffeF sharply. This makes the technology of production of
nionocrystals extremely.complex, which exilains the complete absence of informa-
tion on the physical properties of these compounds in the literature. Using
dual temperature systhpsis, the authors developed a technique for synthesizing
these compounds_in c,onqideration of the pressure kinetics of the vapors in
CQ,dl / 2
- --------------------- 0
ACC NR'
AP7013140
an ampule. The CdW monocrystals were'produced-by directed Crystallization
from a StOichiometric2
melt at constant temperature gradient. This same method
was used to produce crystals alloyed with tin, germanium, gallium, arsenic,
bismuth and indium. The ZnGeP
from a melt-solution. 2 mOnOcrYstals were produced by crystallization
The first measurments Of photoconductivity of these
mOnOcrYstals showed that they have maximum Photosensitivity in the visible and
near infrared areas, wjk*qh will Possibly determine the area of their practical
Orig. art. hass I figure.

VILIAKO, K.; IRkNGX, L. [116~e, L.1; KHOSON, Kh.ClIanson, H.]; LrfEM, X. [TZ5per,
Blood changes in diphyllebothriasis. Mad. paraz. i paraz. bol. 27 no.4:494
JI-Ag '58. (KLEA 12:2)
1. 1% kafedry biokhimii (zav. kafedroy - prof. E. Martinson ) i is kafedry
propedevtiki vnutrennikh bolezney (zav. kafedroy - dots. R. Raudam) Tartu-
skogo gosudarstvannogo universitata.
(TAPSWOM4 UIMTIONS, blood in,
dipbyllobothriasis (Rae))

MGM. X. CkMrge, KJ, dotsent;,jKHIE3O![, Kh. (Hanson, H.), kand.ned.nauk
Effect of soporifice on adrenal cortex function. Probl.
endok. i gorm. 5 n0-3:39-42 mr-Je 159. (MIRA 12:9)
1. Xz kafedry falcul'tetakoy terapti Tartuskogo gosixiaretvennogo
univerRitata (zav. - doteent K.Kyrgo).
(TRIOPP21UL, eff .
on 17-katosteroide & hydro-qcorticosteroide in
urine (Rue))
(17-OTOSTIROIDS, in urine
eff.of thiopental (Rua))
(AMI" CCRTZI HORMONES, In urine
17-hvdr~oxycorticosteroids, eff. of thiopental
Ot%~S) -)

RIYVY YaaYaep kandemed.nauk; KWSONP Kh.M.
Use of dihydrochlorothiazide (hypothiazido). Vrach. dolo, no.l:
51-54 A 162. (MM 15t2)
1. Kafedra fakulltetskoy terapii i patologicheskoy fiziolggii (zav. -
dotsent K.Kh.Kyrge) Tartuskogo universiteta i Tartuskaya g6rodskaya
klinicheakaya bollnitsa.
(THWIAZIM) (EDiXA)

k
I e P h 0 c) r-Y a r i o r, r v
ABSTRACT! Experiments were performed for the Purnmao rif cnmrL42rlngr
I n a e n n .1 a v i- k, r
irradiation of rats by docza of 800 r, MIL~Chondrla of the
h e I r a b t I t t v t o n e r o r m n i. I i a t
~rg

AP -404," 7 9
Z
Or- "IT T Tgomtrat*r*,;,*v nauchno-isaledovatellqkiv rentgencradiolo-
a t x 4-1
1; 0 r
t I q n F TZ o P n a 1 -4 i
N--yrm-arm

KIIIIINSO~11, 1~.P.
Effect of whole-body X-ray irradiation on the proceases of conjugete
oxidative phosphorylation and sor- mechanisns of t.ielr remilation in
1.1ver mltochondrJa of rats. Radiobiologila 5 no,I:L4-48 16 5.
("111RA 18:3)
1 TSentrallnyy nwichno-isaledovatel'skiy rentgeiio-radic,ioficneal(iy
Institut I'linisterstra zdravookbrunenlya SSSRI Len-'rprad.

AA.
USSR/Fogineering - Induction heating
Oard 1/1 Pub. 128 - 17/34
Authors Donskoyj, A. V.,, and lOiansuvarov, A. A.
Title The induction heating with radio-frequency currents'of blanks for the
forging azad stamping industry
Periodical I Vest. mash.Al2,, 60-62.. Doc 1954
ILbstraot I The editorial gives some information concerning the experiment conducted
by M. I. Nalininla Polytechnical Institute in Leningrad, in the field of
induction heating of billets and blanks with radio frequonclee, A short
description of tube-generatorso induction heating and the change in-range
of heating temperatures is given. Five MSR references (1949-1953).
Diagram; graphs.
Institution I .........
Submitted .......

_'O
603248� SOURCE CODE: UR/o4l3/66/ooo/017/0030/0030
DfVENTOR: Alekseyev, F. A.; Balashov:' V. A.- Gerehonok. M. I.; Grachey. I. M.;
-nits
Yegorov, 9. A.; F.Obyl . _zl;~G F. A.% Lifshits. A tbndrus, D. B.4
kaya.
Marshin, N. A.; Rashevskiy, A. L ; Rivkin, A. 3'.; Tal'gren, A._!. A. A.
ORG: none
TITLE: Device for high frequency ekdering oZ lead-acid' al -ies. Class 21,
No. 185368
!52
SOURCE: Izobreteniya, proqrshlenn e obraztey, toyarnyye znaki, no. IT, 1966, 30
TOPIC TAGS: metal soldering, stor ge battery
ri
ABSTRACT: An Author Certificate has been issued for a device for high-frequency.
soldering of lead-acid itorage batteries. The device containsan h-f generator vith
an external tank circuit, a multiloop inductor with opon ferrite magnetic circuits, a
conveyor with a lifting table, a control desk, and an assenblinS-soldoring former
equipped with a magnetic screen fastened on a non-magnetic buse. Orig. art. hags
I figure
Card 1 /2 UDC: 621.352.2:621.- 191-.35T:621.3.- 029.5

Fig* 1o 1 - H-f generator; 2 external tank circultj
3 - Inductorl.4 - conveyorl 5 lifting tablel
6 - control deski 7-- formstj mareenj 9 b"e.
SUB CODSI 10,13 SVBM. DATICo 24 Var 65
COrd 212 &'fn

110-4-14/25
AUTHORS: Donskcy, A.V., Doctor of Technical Sciences, Professor,
Borok, A.M., Ivenskiy, G.V', and-Khansuvarov,A.A., Engineers.
TITLE: A High-frequency Electro-thermal Installation of a New
Series (Vysokochastotnaya elektrotermicheskaya ustanovka
novoy serii) ifl
FERIODICAL: Vestnik Elektropromyshlennosti, 1958,~No. 4.
'Di". 42 - 41/ bssi).
ABSTRACT: High-frequency electro-thermal installations with valve
generators for induction-heating are widely used. A mass-
produced equipment has lacked anode voltage stabilisation and
needs careful screening to reduce radio interference. A new
series of equipment has been developed that operates at a
frequency of 70 kc/s, so that both !he fundamental and the
second harmonic are outside the standard frequency range for
radio interference. This new equipment, type sin3-67, employs
a stabilised anode-controller rectifier. The main technical
data are given with a full-circuit diagram in Fig.1 and the
0
main components of the circuit are described: the rated output
is 60 kW. The principles of the grid control system are des-
cribed. A change of the grid voltage varies the firing angle of
the valve. The main advantage of the circuit is its simplicity
and although the accuracy cf stabilisation is less than that
Cardl/2of existing circuits, it is nevertheless adequate. The equipment
110-4-14/25
A High-frequency Electro-thermal Installation of a. New Series
includes protection against short-circuit, crerload and under-
voltage. A general view of the equipment is given in Fig.2.
It is housed in a number of separate cubicles, whose contents
are described.
A wide range of tests was made on the equipment; its character-
istics are given in Irig-3. These curves show that the genera-
tor can easily be adjusted to give the best operating conditions
on the most varied loads. The oscillatory power ranges from
40 - 60 kW and the efficiency of the generator valve is 72 - ?8%.
The power-factor depends or, the ignition angles of the thyratron
and ranges from 0.72 - 0.93. During the tests careful measure-
ments were made of radio-interference with the results plotted
in Fig.4, which shows that interference is worst at light-loads
but is still within the specified limits even when the cubicle
doors are open.
There are 4 figures, and 3 Russian references.
ASSOCIATIOv: The Leningrad Works for High-frequency Installations
(Leningradakiy zavod vysokochastotnykh ustanovok)
SUBMITTED: October 18, 1957
AVAILABLE: Library of Congress
Card 2/2

SOV/110-59-1-21/28
The Frequency Range for High-Frequency Heat4 'ng'Installations
it would be advisable to allocate frequency bands to such
equipment and to permit some relaxation of interference
levels in these bands. It is recommended that surfaca-
hardening equipment should use the range 65 - 74 kc/s.
The third harmonic of this frequen,_,y range is 195 - 220
kels, which is already common in industry and should
continue to be used. The frequen3y range of 6.5 t 1o%
Mlels is reeommended for valve-generator installations
for melting semiconductors. For other applications
frequencies ranging from 13 t 5% to 39 t 2.5% Mc/s are
suggested. The frequencies recommended are all harmonies
of the basic frequency 6.5 Mc/s. The use of high-
frequency equipment is jxtending. Unless frequency bands
are allocated to uu-1h equipment and higher interference
Card 2/2 levels are permitted in these bands, the situation will
soon become impossible.

BLAGOVESHCIIENSKIY, Gleb Vladimirovich; f~RAN!~qYAHPVJ_ A.A., red.
(Use of ferrite magnetic circuits in induction heating
Irimenenie ferritovykh r.,agnitoprovodov v praktike in-
duktsionnogo nagreva. Leningracl, 196-/. 12 p. (Lenin-
gradskii dor, nauchno-tekhnicheskoi propagandy. Obmen pe-
rodovym opytom. Seriia: Elel-.trotekhnologicheskie protsessy
i ustanovkil no.1) (MIRA 17.9)
-Y

GRAMENITSM.. VON.;
Standard two-piston vacuVa uffnameter. Trudy inst. Kom. stand.
mer i izu. prib. no.66:14-26 162. (MIRA 16:6)
1. Voesoyuznyy nauchno-isBledovatellskiy institut Komiteta,
Btandartov, mar i ismeritellufth priborov pri Sovata
Ministrov SSSR.
(vacuum gauges)

*S93u9JaJGJ 4-ITAOS 2
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KMNSUVAROV,, K.I.
Standard firet-grade nonmercurial piston ba-"ometer.
Nov. izm,prib.i motod.ikh pov. no.l.-101--IC14 7-60. .11,
(111W. U~12)
(Barometer)
A:

GRAMENITSKIYJ, V.N.; FROWV, Yu.A.; KHAJISUVAROV, K.I.
Grade 0.02 standard manometer with meaourement limits from
0 to 2.5 kgf/cr;2* lzm.tekh. So.11:19-20 N 161,
(MIRA Il+:Il)
(Manometer)

3/113/b2/000/011/003/000
E19VE155
AUTHOR: Kha nail
TITLE: Hydrodynamic forces in the piston systems of
instruments with seal-leng pistons .
PERIODICAL: IzineritelInaya tekhnika, no.11,* 19b2, 23-26
TEXT% The theory of rotat*ing piston instruments is often
based on the hydrodynamic theory of lub 'rication of a plain
bearing, despite the difference that the loading is mainly axial.
In practical piston instruments, inaccuracies of fit and center-tng
give rise to some radial forces, so it is necessary to consider
the case in which both axial load and tor4ue are applied to the
cylinder. Taking the Sommerfeld formula as a basis, with the
usual simplifying assumptions-
,(no end leakage, no distortion,
constant lubricant viscosity), formulae are derived for forces
acting when the piston and cylinder are not coaxial. It is first
shown that the relative eccentricities of the piston lines in the
planes of the top and bottom ends of the cylinder depend only on
the nature of the external load. Two extreme cases are considered.
1) The piston in loaded with a force F and there is no internal
Card 1/3

I , s/115/62/000/011/003/008
'Hydrodynamic forces in thq,piston... E194/EI55
torque; in this case the,loading factors are given by the
expressions
a
0
1-2
(2 + a2 CL
where a is the eccentricity. The solution reduces to the
Sommerfeld formula. and the loading factors
2) The piston is loade-d with pure torque
then are:
1 arcsin a 2 arctan (122 al
0, 72 T 2
al
where cx'l and Q2 are the relative eccentricities of the piston
at the top and bottom of the piston, re.spectively.
An experimental rig, constructed to check the formulae, consisted
of an outer 'loaded cylinder'fitted closely over an intermediate
rotating driv Ien cylinder, which fita over a stationary piston.
The dimensions and clearances used were typical of practical
Card 2/3
Hydrodynaill.ic forces irk the piston... S/113/62/000/011/003/008
E194/EI55
instruments. The
were made of torqu system was filled with lubricant. Measurements
e on the external cylinder when loaded horizon-
tally. Its displacement, observed through a microscope, was found
to describe a steady double-loop motion around the central
Position. The test results agree qualitatively with those obtained
from theoretical formulae. Tes.t results obtained under different
conditions (speed, Piston conditionst liquid viscosity) agree
e,tasonably well if the load characteristics are constant.
facilitates preliminary design calclilations The work
strain) (not allowing for
for Piston instruments.
Such calculati.na are
Useful in developing new Piston dynamometers and balanc particularly-
loadings (thousands es for heavy
of tons) for which experience with existing
instruments in insufficient; when measuring masses Of 1 - 2 tons
with barometric pressure instruments, the Permissible error is of
the order of 0.001~..
There are 5 figures.
Card 3/3

KHANSUVAROV, K.I
Hydrodynamic forces in piston systems of instruments having
a nonsealed piston. Izm.takh. no.U:23-26 N 162. (MUU 15:11)
(Pistons)

-1 2
-NH -AT
ACCESSION 3002050 .1/25P,5~--'.!/OOO/066/ool4/oo26
ALMHOR: -Gramnitskly- V, N.- Khsnsuvarov, K. 1.
T=: Calibrating double-piston pressure-vacuum gau.Z-!
-SMIRCE. USSR.~ Komitet stendartoy, Mr, i izmeritellny~kh priborov. Tx%,dy* insti-
tu~ov KomitftaP no-'66 (126),'1962. Tasiedovaniya v oblasti i=erenly davieniya,
raskhc~rl% i vaku=al 14-26
T