×
Aircraft / Aviation Vehicles & Artillery Small Arms Warships & Submarines Military Ranks Military Pay Scale (2024) Special Forces

SOKO J-21 Jastreb (Hawk)


Light Attack / Advanced Trainer Aircraft


Yugoslavia | 1968



"Just over 100 of the SOKO J-21 Jastreb ligth attack aircraft were produced for various global operators during the Cold War decades."

Power & Performance
Those special qualities that separate one aircraft design from another. Performance specifications presented assume optimal operating conditions for the SOKO J-21 Jastreb (Hawk) Light Attack / Advanced Trainer Aircraft.
1 x BMD (Rolls-Royce / Bristol Siddeley) Viper Mk 531 turbojet engine developing 2,990lb of thrust.
Propulsion
510 mph
820 kph | 443 kts
Max Speed
39,370 ft
12,000 m | 7 miles
Service Ceiling
944 miles
1,520 km | 821 nm
Operational Range
4,100 ft/min
1,250 m/min
Rate-of-Climb
Structure
The nose-to-tail, wingtip-to-wingtip physical qualities of the SOKO J-21 Jastreb (Hawk) Light Attack / Advanced Trainer Aircraft.
1
(MANNED)
Crew
35.6 ft
10.85 m
O/A Length
34.6 ft
(10.55 m)
O/A Width
12.0 ft
(3.65 m)
O/A Height
14,330 lb
(6,500 kg)
Empty Weight
24,791 lb
(11,245 kg)
MTOW
Armament
Available supported armament and special-mission equipment featured in the design of the SOKO J-21 Jastreb (Hawk) Light Attack / Advanced Trainer Aircraft .
STANDARD:
3 x 12.7mm Browning AN/M3 heavy machine guns

OPTIONAL:
Up to 2,000lb of externally-carried ordnance across eight hardpoints.
Variants
Notable series variants as part of the SOKO J-21 Jastreb (Hawk) family line.
J-21 "Jastreb" - Base Series Designation
J-21E - Export variant
RJ-21 - Tactical reconnaissance variant
RJ-21E - Export model of RJ-21
NJ-21 - Two-seat advanced trainer aircraft
Authored By: Staff Writer | Last Edited: 08/07/2018 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.

The SOKO J-21 "Jastreb" ("Hawk") of the former Yugoslavia was a further development of the original G-2 "Galeb" of 1961 (detailed elsewhere on this site). The two-seat Galeb stood as the country's first indigenously designed, developed and produced aircraft and fulfilled the roles of advanced jet trainer and light attack aircraft for the Yugoslav Air Force. Two hundred forty-eight of the type were completed from 1965 to 1983. The J-21 continued this line as a direct offshoot and was developed specifically as a one-seat light attack platform to which followed 121 of the type produced from 1967 to 1977. Once again, the Yugoslav Air Force became a primary operator.

While the G-2 was used to succeed the aging, outgoing line of American Lockheed T-33 Shooting Star trainers, the J-21 was selected to succeed the aging, outgoing line of American Republic F-84 Thunderjet fighter-bombers.

The Jastreb was given a more powerful engine fit which increased both performance and capabilities and this allowed extra hardpoints to be installed for even greater war loads. The internal structure of the aircraft was reinforced and support for JATO (Jet-Assisted Take-Off) was introduced allowing for better short-field operation (2 x solid-fueled rocket units of 1,000lb thrust each). 3 x 12.7mm Browning AN/M3 Heavy Machine Guns (HMGs) now took their place in the nose assembly, unlike the two guns featured in the G-2. Hardpoints numbered eight and supported rockets and conventional drop ordnance including napalm and cluster bombs.

Because of its origins in the G-2, the J-21 retained much of the former design's form and function. The fuselage was slim in profile and accommodated a single crewman under a lightly-framed canopy with decent vision. The aircraft was powered by a single turbojet engine buried within the slender fuselage and this installation was aspirated by a small pair of intakes mounted to the sides of the fuselage. The wing mainplanes were straight and clipped at their tips where tanks were affixed. The tail unit featured a single vertical fin and low-set horizontal planes. The undercarriage remained a tricycle arrangement, wholly retractable.

Power stemmed from a BMB (Rolls-Royce / Bristol Siddeley) Viper Mk 531 turbojet engine of nearly 3,000 lb of thrust. Performance specs included a maximum speed of 820 kmh, a cruising speed of 740 kmh, a range out to 1,520 kilometers and a service ceiling of 12,000 meters. Rate-of-climb was 4,100 feet-per-minute.

Original production models were simply designated J-21 and this design could double as a reconnaissance aircraft in addition to fulfilling the ground attack role. The J-21E became an export version of this mark. The RJ-21 followed as a more dedicated reconnaissance model and outfitted with applicable photo-reconnaissance (camera) equipment for the role. The RJ-21E was, in turn, the export version of this model. The NJ-21 was developed as a two-seat advanced jet trainer that retained some of the light attack functionality common to the J-21 line.

J-21s saw combat exposure in the First Congo War (1996-1997) and the Yugoslav Wars of the 1990s. Several Serbian J-21s were engaged and shot down by American Air Force Lockheed F-16 Fighting Falcons. Operators of the J-21 series went on to include the Libyan Air Force, Republika Srpska, Zaire and Zambia. Some examples fell into the hands of rebels of the Free Libyan Air Force during the 2011 Libyan Civil War.

Content ©MilitaryFactory.com; No Reproduction Permitted.
Operators
Global customers who have evaluated and/or operated the SOKO J-21 Jastreb (Hawk). Nations are displayed by flag, each linked to their respective national aircraft listing.

Total Production: 121 Units

Contractor(s): SOKO - Yugoslavia / Bosnia and Herzegovina
National flag of Bosnia and Herzegovina National flag of Libya National flag of Yugoslavia National flag of Zaire National flag of Zambia

[ Libya; Republika Srpska (Bosnia and Herzegovina); Yugoslavia; Zaire; Zambia ]
1 / 1
Image of the SOKO J-21 Jastreb (Hawk)
Image copyright www.MilitaryFactory.com; No Reproduction Permitted.

Going Further...
The SOKO J-21 Jastreb (Hawk) Light Attack / Advanced Trainer Aircraft appears in the following collections:
HOME
AVIATION INDEX
AIRCRAFT BY COUNTRY
AIRCRAFT MANUFACTURERS
COMPARE AIRCRAFT
AIRCRAFT BY CONFLICT
AIRCRAFT BY TYPE
AIRCRAFT BY DECADE
COLD WAR AIRCRAFT
Disclaimer | Privacy Policy | Cookies

2024 Military Pay Scale Military Ranks of the World U.S. Department of Defense Dictionary Conversion Calculators Military Alphabet Code Military Map Symbols Breakdown U.S. 5-Star Generals List WWII Weapons by Country World War Next

The "Military Factory" name and MilitaryFactory.com logo are registered ® U.S. trademarks protected by all applicable domestic and international intellectual property laws. All written content, illustrations, and photography are unique to this website (unless where indicated) and not for reuse/reproduction in any form. Material presented throughout this website is for historical and entertainment value only and should not to be construed as usable for hardware restoration, maintenance, or general operation. We do not sell any of the items showcased on this site. Please direct all other inquiries to militaryfactory AT gmail.com. No A.I. was used in the generation of this content.

Part of a network of sites that includes GlobalFirepower, a data-driven property used in ranking the top military powers of the world, WDMMA.org (World Directory of Modern Military Aircraft), WDMMW.org (World Directory of Modern Military Warships), SR71blackbird.org, detailing the history of the world's most iconic spyplane, and MilitaryRibbons.info, cataloguing military medals and ribbons. Special Interest: RailRoad Junction, the locomotive encyclopedia.


©2024 www.MilitaryFactory.com • All Rights Reserved • Content ©2003-2024 (21yrs)