Yakovlev Yak-53

The prototype Yak-53 was derived from the Yak-52, differing in being a single seater designed as an aerobatic trainer. The front cockpit was deleted and the canopy modified to suit. The cockpit used the flying controls of the Yak-50 without the spring loading of the Yak-52, and the use of the undercarriage and tankage of the prototype Yak-52 to save weight, making the Yak-53 100 kg (220 lb) lighter than the Yak-52.[1]

The prototype Yak-53 set two world records for time to height in its class on 15 February and 23 February 1982. Some sources state that a 3-bladed propellor of western origin was used for the record setting flights.[1]

Data from OKB Yakovlev[1]

General characteristics

• Crew: 1
• Length: 7.68 m (25 ft 2 in)
• Wingspan: 9.5 m (31 ft 2 in)
• Wing area: 15 m² (160 sq ft)
• Empty weight: 900 kg (1,984 lb)
• Gross weight: 1,060 kg (2,337 lb)
• Powerplant: 1 × Vedeneyev M-14P 9-cylinder air-cooled radial piston engine, 270 kW (360 hp)
• Propellers: 3-bladed Foreign manufacture constant-speed propeller

Performance

• Maximum speed: 300 km/h (190 mph, 160 kn)
• Time to altitude: 3,000 m (9,800 ft) in 5 minutes 5 seconds; 6,000 m (20,000 ft) in 13 minutes 54 seconds

• Take-off run: 150 m (490 ft)

• Landing run: 250 m (820 ft)

• Gordon, Yefim; Gunston, Bill (1997). Yakovlev aircraft since 1924 (1st ed.). London: Putnam. p. 289-290. ISBN 0851778720.