Yakovlev Yak-11
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| Yak-11 | |
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| Type | Training aircraft |
| Manufacturer | Yakovlev, Let |
| Maiden flight | 10 November 1945 |
| Introduced | 1946 |
| Retired | 1962 |
| Primary user | Soviet Air Force |
| Number built | 4,566 |
The Yakovlev Yak-11 (NATO reporting name: "Moose", Russian: Як-11) was a trainer aircraft used by the Soviet Air Force and other Soviet-influenced air forces from 1947 until 1962.
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[edit] History
The Yak-11 design was based in large part on the successful Yak-3 fighter; it became the Soviet Air Force's most widely used trainer aircraft and has sometimes been equated in importance with the T-6 Texan. The first prototype flew on 10 November 1945; the aircraft entered service in 1946. In total, 3,859 aircraft were produced between 1947 and 1956. From 1953, an additional 707 were licence-built by Let in Czechoslovakia under the name LET C-11. Both Yak-11 and C-11 were used in all Warsaw Pact countries, as well as many African, Middle Eastern and Asian countries, such as Afghanistan, Albania, Algeria, Bulgaria, China, Czechoslovakia, East Germany, Egypt, Indonesia, Iraq, Hungary, Poland, North Korea, Romania, Somalia, Soviet Union, Syria, Vietnam, Yemen and Austria.
In 1958, the Yak-11 was to be replaced by the tricycle-geared Yak-11U which was intended as a trainer for jet pilots. However, the U variant was only produced in small numbers, and the Yak-11 remained in service with the VVS until 1962.
Due to its Yak-3 lineage, the Yak-11 has recently seen widespread popularity among warbird enthusiasts. Souped-up versions of the Yak-11 can be frequently seen at air races. About 120 Yak-11s remain in airworthy condition.
[edit] Operators
- 14 received by the Royal Afghan Air Force from 1958. None remain in service since 1999.
Algeria
Austria
Bulgaria
China
Czechoslovakia
East Germany
Egypt
Iraq
Hungary
North Korea
Poland
Romania
Somalia
Soviet Union
Syria
Vietnam
Yemen
[edit] Description
Mixed construction (metal and wood) trainer plane. 7 cylinder radial engine with two-blade fixed propeller. Conventional retractable landing gear with fixed tailwheel.
[edit] Specifications (Yak-11)
General characteristics
- Crew: Two - student and instructor
- Length: 8.50 m (27 ft 10 in)
- Wingspan: 9.4 m (30 ft 10 in)
- Height: 3.28 m (10 ft 5 in)
- Wing area: 15.40 m² (166 ft²)
- Empty weight: 1,900 kg (4,189 lb)
- Loaded weight: kg (lb)
- Max takeoff weight: 2,440 kg (5,379 lb)
- Powerplant: 1× Shvetsov ASh-21 air-cooled radial piston engine, 425 kW (570 hp)
Performance
- Maximum speed: 460 km/h (289 mph)
- Cruise speed: 370 km/h (230 mph)
- Range: 1250 km (795 miles)
- Service ceiling 7,100 m (23,295 ft)
- Rate of climb: 8.1 m/s (1,600 ft/min)
- Wing loading: 161 kg/m² (32.9 lb/ft²)
- Power/mass: 0.17 kW/kg (0.10 hp/lb)
Armament
- 1x nose-mounted machine gun, either 12.7 mm UBS or 7.62 mm ShKAS
- up to 200 kg (440 lb) of bombs on two underwing racks
[edit] See also
Related development
Comparable aircraft
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