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The Yakovlev Yak-55 is a single-seat aerobatic aircraft. The Yak-55 have won several world aerobatic championships. The Yak-55 was designed to match the tight, low-speed aerobatic style of the Western aircraft which the Yak-50 couldn't achieve. The Yak-55 first flew in 1981.
General characteristics
Crew: one
Length: 7.29 m (23 ft 11 in)
Wingspan: 8.10 m (26 ft 7 in)
Height: 2.80 m (9 ft 2 in)
Wing area: 12.8 m2 (138 sq ft)
Aspect ratio: 5.13
Gross weight: 855 kg (1,885 lb) for aerobatics
Max takeoff weight: 975 kg (2,150 lb) for ferry flight
Powerplant: 1 × Vedeneyev M14P 9-cylinder radial engine (360 hp)
Performance
Maximum speed: 305 km/h (190 mph; 165 kn)
Stall speed: 100 km/h (62 mph; 54 kn)
Never exceed speed: 450 km/h (280 mph; 243 kn)
Ferry range: 705 km (438 mi; 381 nmi)
g limits: +9, -6
Roll rate: 345 degrees per second
Rate of climb: 15.5 m/s (3,050 ft/min)