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Sukhoi Su-25 Frogfoot
Sukhoi Su-25

Description
Role Ground-attack aircraft
Crew 1 pilot
Passengers
First flight 22nd February 1975
Entered service 1981
Manufacturer Sukhoi
Produced 1,024
Dimensions
Length 15.36 m
Wingspan 14.36 m
Height 5.20 m
Wing area 30.10 m²
Weights
Empty 9,315 kg
Loaded
Maximum takeoff 17,600 kg
Powerplant
Engine 2 × Tumanski R-95Sh
Power (each) 40.17 kN
Performance
Maximum speed 975 km/h
Cruising speed
Range 1,950 km
Ceiling 7,000 m
Rate of climb

The Sukhoi Su-25 Frogfoot is an single seat, twin engine, Soviet attack aircraft developed by Sukhoi. Its main role is close air support.

HistoryEdit

Development of the Su-25 began in the early 1960s, following discussions on the need for a new ground attack aircraft.[N 1] In March 1969 the Ministry of Air Industry issued official proposals to four construction bureaux - Ilyushin, Mikoyan, Sukhoi and Yakovlev.[1]

The development team at Sukhoi was led by Shuri W. Iwashetshkin and they submitted a private venture prototype designated T-8, completed in 1974, making its first flight on 22 February 1975 in the hands of Wladimir Ilyushin, who flew the first prototype (T-8-1) in Zhukovsky, which was equipped with RD-9 engines, producing a thrust of 25.5 kN each. This was followed by the T-8-2, a modified second prototype (greater wingspan and modified flaps and stabs), which had its first flight on 26th December 1975, flown by W. P. Walsilyev. Both prototypes were equipped with new R-13-300 engines. But on the definitive aircraft R-95Sch engines were used, producing a thrust of 40.17 kN. Those were built in Tbilis (Georgia), in this factory the series production began in 1978, and the first flight of the T-8-3 aircraft was in 1979. Although the design did not comply with the thinking of the time, the T-8 won the competition, despite needing continued development before it could enter front line service. Sukhoi's desire to test the T-8 under combat conditions resulted in two prototypes - T-8-3 and the modified T-8-1 - being used from April to June 1980 on 44 missions in Afghanistan.

The Su-25 competed with the Ilyushin Il-102, and prevailed itself and was ordered by the Soviet Air Force.

After NATO identified the Su-25 in the year 1977, it was provisionally named Ramenskoje Ram-J. It received the nickname Frogfoot in the year 1981.

ReferencesEdit

NotesEdit

  1. The discussions were prompted by the emergence of new data from localised conflicts, such as the ones in South East Asia, the WarPac67 exercise, analysis of the USAF A-X project (which led to the A-10 Thunderbolt II) and the need for improved survivability and resistance to damage.

SourcesEdit

  1. World Aircraft Information Files Aviation Partwork. Midsummer Books Ltd. File 269 Sheet 1 (World Military Aircraft:Sukhoi Su-25 'Frogfoot' - Introduction')

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