FIRST OBSERVATION OF THE YUGOSLAVIAN G-4 SUPER GALEB

• Document Type: CREST
• Collection: NGA Records (Formerly NIMA)
• Document Number (FOIA) /ESDN (CREST): CIA-RDP81T00380R000100570001-0
• Release Decision: RIPPUB
• Original Classification: T
• Document Page Count: 7
• Document Creation Date: December 28, 2016
• Document Release Date: November 3, 2010
• Sequence Number: 1
• Publication Date: February 1, 1981
• Content Type: REPORT

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Top Secret
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First Observation of the Yugoslavian
G-4 Super CALEB (Sj
Top Secret
IAR-0018/81 25X1
FEBRUARY 1981
copy 1 ? 0
im'part' ,nalyala report
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Top Secret RUFF
FIRST OBSERVATION OF THE YUGOSLAVIAN G-4 SUPER GALES (S)
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L (TSR) The first observation of the new Yugoslavian G-4 Super CALEB aircraft (Figure
I), the eventual successor to the G-2A GALEB trainer, was made on imagery of 25X1
Batajnica Airfield This airfield, which supports a Yugoslav Air Force (YAF) 25X1
interceptor re invent, also functions as the test and flyaway field for Batajnica Aircraft Assembly
Plant and as the primary flight test center for the Yugoslavian aircraft industry. 25X1
Other major aircraft which were flight tested at Batajnica Airfield were the SOKO ORAO (JU-
ROM) multifunction fighter and the UTVA-75 basic flight trainer. This report summarizes activ-
ity related to the G-4 Super GALEB program and provides a photograph of the G-4 Super
GALEB (Figure 1), a conceptual drawing (Figure 2), and a table of measurements.
2. The G-4 Super GALEB observed at Batajnica (Figure 1) is a twin-seat 25X1
trainer which exhibits characteristics of both the G-2A GALEB and the SOKO ORAO (JUROM).
Figure 2 is a conceptual drawing of this new aircraft. That the G-4 Super GALEB exhibits physical
similarities to both the G-2A GALEB and the SOKO ORAO (JUROM) is not suprising, since it
was reportedly designed to perform at least one of the functions of each aircraft.' As an intermedi-
ate flight trainer, the G-4 Super GALEB will eventually replace the G-2A GALEB in the YAF
inventory; thus, the G-4 Super CALEB (Figure 2) retains the basic CALEB fuselage design, the
low-mounted wing, the tandem-seat cockpit, and a narrow dorsal spine. As an advanced flight
trainer and weapons training platform, the G-4 CALEB will be used in concert with the two-seat
ORAO (JUROM) trainerz and therefore must have some capabilities similar to those of the
ORAO. Thus the G-4 Super CALEB features aswept-wing, a redesigned (swept) horizontal stabil-
izer, an aft-canted vertical stabilizer, and, reportedly,3 the Rolls-Royce Viper 632-41 engine used
in the ORAO.~ The G-4 Super CALEB also is reportedly fitted with two underwing weapons
pylons, as well as a pylon under the fuselage.' The table below provides measurements for the G-4
Super GALEB* as well as comparative figures for the G-2A CALEB and the SOKO ORAO
(JUROM).
G-4 Super
CALEB
G-2A
CALEB
SOKO ORAO
(JUROM)
Length overall
Wingspan
Fuselage diameter
Nose-to-wing leading edge
Wing root chord
Wing tip chord
Horizontal stabilizer span
Wing leading edge sweep angle
3. The initial design phase of the G-4 Super GALEB probably began in 25X1
the mid-1970s at Zarkovo Air Research Institute near Belgrade. Flight testing 25X1
reportedly began in September 1978,4 and during 1980 the two flight-test prototypes were trans-
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Top Secret R U F 25X1
FIGURE 2. CONCEPTUAL DRAWING, G-4 SUPER GALEB AIRCRAFT
Top Secret
NPIC T-0871
!A R-0018/8[
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Top Secret R U F F
(erred from Mortar Airframe Plant SOKO to Batajnica for final preseries prod-
uction tests.'?` Three additional G-4 Super GALEB fusela es robably preseries aircraft, were
reportedly observed on the assembly line at Mortar on One additional G-4 Su er
GALEB, with the entire aft fuselage section removed, was observed at Batajnica Airfield on~
IMAGERY
(S/D) Satellite imagery of
MAPS OR CHARTS
vas used in the preparation of this report.
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US Air Target Chart. Series 200, Sheet 0251-16, scale 1:200,000
DOCUMENTS
1. NPIC.
IAR-001480, B
atajnica Aircraft A
ssemble Plant, Yugo
slavia (S~, Mar 80
(TOP
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IIR 1 521 0698
2
DOD
80, ORAO/!AR-9
3 Development l U),
31 Oct 80 (SECRET
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.
.
3. DOD. IIR 1 521 0700
80, Data on SUPE
R GALEB/GALEB
4 (U/, 30 Oct 80 (SE
CRET
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4. DIA,
DDB-1923-2-80
-SAO, Foreign Air
craJ! Production (F
OAP~ Connnunist
World
5X1
I Ul, Jun 80 (TOP SECRET
5. DOD. IIR 6 904 0140 80, Yugoslav Aircraft Production, 24 Jul 80 (CONFIDENTIAL)
*Extracted material is classified TOP SECRE~
**Extracted material is classified TOP SECRE
(S) Comments and queries regarding this report are welco ma be directed to
Warsaw Pact Forces Division, Imagery Exploitation Group, NPIC,
Top Secret lAR-UOl8/8l
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Top Secret
Top Secret
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