Yakovlev Yak-141
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| Yak-141 | |
|---|---|
 Yak-41M hovering above the carrier Baku |
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| Type | VTOL fighter |
| Manufacturer | Yakovlev |
| Maiden flight | 9 March 1987 |
| Status | Cancelled in August 1991 |
| Primary user | Soviet Navy |
The Yakovlev Yak-141 (NATO reporting name Freestyle) was a supersonic VTOL fighter aircraft from the Soviet Union.
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[edit] Design and development
The Yak-141, the development prototype of the Yak-41, was an attempt by the Soviet Union to produce a supersonic VTOL aircraft. The program was initiated in 1975 as the Yak-141, a development of the Yakovlev Yak-38. The first conventional flight of the Yak-41 was on 9 March 1987, and the first hovering flight on 29 December 1989. The Yak-41M designation was adopted around 1991 to reflect a shift to a multi-role configuration.
The Yak 141 gained VTOL ability through a combination of a lift and lift/cruise engines, as did the Balzac and earlier Yak VTOL designs. The two lift jets were mounted behind the cockpit. These contributed only to take-off and once in horizontal flight were switched off. The main engine was installed in the rear fuselage area, with a swivelling nozzle and an afterburner. For take off and hovering the exhaust from the jet was vectored downwards through 90° working in conjunction with the forward lift jets. To obtain sufficient power for vertical take off, the afterburner had to be used, which imposed serious limitations on the types of runway surfaces that could be used.
The Yak-141M was supposed to fly at speeds of Mach 1.7, and was claimed to have had a maneuverability comparable to the Mikoyan MiG-29.[citation needed] It was designed for the Soviet Air Force (VVS), not for the Soviet Navy (VMF), as was the original Yak-41.[citation needed]
In August 1991 the program was stopped because of the shrinking military budget of the Soviet Union. The Yakovlev design bureau has attempted to generate interest in reviving the program, including the proposal for an advanced version known as the Yak-43,[citation needed] but has yet to find interest.
[edit] Variants
The Yak-43 was a proposed development of the Yak-41M 'Freehand' equipped with Kuznetsov NK-321 engines.
[edit] Operators
[edit] Specifications (Yak-141)
Data from[citation needed]
General characteristics
- Crew: one, pilot
- Length: 18.30 m (60 ft 0 in)
- Wingspan: 13.97 m (45 ft 10 in)
- Height: 5.00 m (16 ft 5 in)
- Wing area: 31.7 m² (341 ft²)
- Empty weight: 11,650 kg (25,680 lb)
- Max takeoff weight: 19,500 kg (43,000 lb)
- Powerplant: 1× MNPK Soyuz R-79V-300 turbojet, 108 kN (24,300 lbf)
- Powerplant: 2x RKBM RD-41 42 kN (9,300 lbf) thrust each) Performance
- Maximum speed: Mach 1.7
- Range: 1,400 km (870 statute miles)
- Service ceiling 15,500 m (50,850 ft)
Armament
- Guns: 1 x 30 mm GSh-301 cannon with 120 rounds
- Hardpoints: Four underwing and one fuselage hardpoints with a capacity of 2,600 kg (5,500 lb) of external stores,
[edit] References
[edit] Links
[edit] See also
Related development
Comparable aircraft
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