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Yak-141 Freestyle
Yak-41 (or possibly Yak-141; see below) began in 1975; the first prototype flew in March 1987, followed by a second in April 1989. Tests were conducted on the aircraft carrier "Admiral Gorshkov". In April 1991, one of the prototypes set several records for VTOL aircraft; it was displayed at the Paris Air Show shortly afterwards. One prototype was lost in a crash (attributed to pilot error) on the carrier in November 1991, after which development was suspended (due to lack of funds rather than any problems with the aircraft); the surviving aircraft was mothballed.
Yakovlev have recently announced their intention to restart development of the Yak-41, apparently as a result of renewed interest from the Russian Ministry of Defence (a similar revival of the twin-turboprop Yak-44 AEW aircraft is also being considered).
A more advanced version, the Yak-41M (Yak-141M?), has also been designed, with the emphasis now on Air Force rather than Navy service. This version has an extensively modified airframe, with a strong emphasis on stealth (there is a distinct resemblance to the F-22), a much more powerful engine, and more fuel and payload.
The "Freestyle" has been referred to as both Yak-41 and Yak-141; it appears that one designation refers to the standard fighter and one to the single prototype modified for record attempts, but there seems to be some uncertainty as to which is which.
Vital statistics (Yak-41/141?): length 18.36 m, span 10.11 m, empty weight 11650 kg, max weight 19500 kg, max speed 1800 km/h (Mach 1.7), range 2100 km; power plant: one 152.00 kN Soyuz R-97V-30 augmented turbofan, two RD-41 lift jets; Armament: 30mm cannon, 5 hardpoints, max external load 2600 kg.
The Russians have had some success in adapting several fighters and attack aircraft for carrier service. Carrier tests were made by modified MiG-29 and Su-27 fighters, and by trainer versions of the Su-25; the naval MiG-29K was cancelled, but the Su-33 (based on the Su-27K) and Su-25UTG have entered service. A report of an early MiG-29K being torn in half on its first attempt at a tailhook arrest gives a hint of the difficulties involved.
Specifications | |
| Country of Origin | Russia |
| Builder | Yakovlev |
| Role | air defence |
| Similar Aircraft | |
| Span | 33ft 1 1/2in (10.105m); folded, 19ft 4 1/4in (5.9m) |
| wing area | 341.56ft(2) (31.7m(2)) |
| length overall | 60ft 2 3/4in (18.36m) |
| height | 16ft 4 1/4in (5m) |
| wheel track | 9ft lOin (3m) |
| wheel base | 22ft 9 1/4in (6.945m) |
| tailplane span | 19ft 4 1/4in (5.9m) |
| Weights |
25,684lb (11,650kg) Empty, equipped 34,833lb (15,800kg) VTO max take-off weight 42,990lb (19,500kg) STO max take-off weight |
| Loads |
2,204lb (1,OOOkg) VTO max external load 5,732lb (2,600kg) STO max external load 3,858lb (1,750kg) max external fuel |
| Armament |
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| limiting load factor | 50% fuel, 7g. |
| Accommodation | Single pilot in a Zvezda K36V rocket-boosted zero-zero ejection-seat. |
| Power Plant | plus |
| Max internal fuel capacity | 9,700lb (4,400kg) |
| Maximum Speed |
675 kts (1,250km/hr) Max level speed, sea level 971 kts (1,800km/hr) at 36,089ft (11,OOOm) M=1.8 max achievable Mach number |
| vertical climb rate | 49,213ft/min (250m/sec) |
| service ceiling | over 49,000ft (15,000m+) |
| combat radius |
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| Cost | |
| User Countries | |
