Yatsenko I-28

The Yatsenko I-28 was a 1930s Soviet single-seat fighter designed by Vladmir Yatsenko and first flown in 1939.

The I-28 was a low-wing cantilever monoplane of mixed construction powered by a 900 hp (671 kW) Tumansky M-87 radial piston engine. It had an enclosed single-seat cockpit with a rearwards sliding canopy. The wing had an inverted-gull shape to reduce the length of the retractable main landing legs.

The prototype was destroyed shortly after the first flight but an order was placed for 30 production aircraft. Also ordered was a prototype of an attack version, the I-28Sh. Although the first five production aircraft were completed the programme was cancelled in early 1940.

General characteristics
Crew: 1
Length: 8.54 m (28 ft 0 in)
Wingspan: 9.6 m (31 ft 6 in)
Wing area: 16.5 m2 (178 ft2)
Empty weight: 1850 kg (4079 lb)
Gross weight: 2720 kg (5997 lb)
Powerplant: 1 × Tumansky M-87B radial piston engine, 820 kW (1100 hp)
Maximum speed: 576 km/h (359 mph)
Range: 800 km (497 miles)
Service ceiling: 10800 m (35600 ft)
Armament: 1-2 x 20mm ShVAK cannons + 2 x 7,62mm ShKAS or 12,7mm UBS MG

I-28 - High-altitude interceptor prototype with Klimov M-105PD engine developed from I-26-2. Differed from I-26 in having an all-metal fuselage and tail and automatic, leading-edge slats on slightly smaller and reshaped wings. One aircraft was built, first flying on 1 December 1940. It did not enter production due to many deficiencies of the engine but served as the basis for high-altitude versions of Yak-7 and Yak-9.