ⓘ Laville DI-4 was a prototype two-seat fighter aircraft developed in the Soviet Union in the 1930s. The chief designer Henri Laville was one of several French av ..

                                     

ⓘ Laville DI-4

Laville DI-4 was a prototype two-seat fighter aircraft developed in the Soviet Union in the 1930s. The chief designer Henri Laville was one of several French aviation specialists invited to work in the Soviet Union and not surprisingly the DI-4 layout was typical of the French trend at the time with a high-mounted gull wing and all-metal construction. Test flight program was completed in 1933 but despite good performance the aircraft did not enter mass production, in part because Soviet Union had no plans to purchase the Curtiss V-1570 engine.

                                     

1. Specifications DI-4

Data from Istoriia konstruktskii samoletov v SSSR do 1938

General characteristics

  • Crew: 2
  • Empty weight: 1.448 kg 3.192 lb
  • Length: 8.5 m 27 ft 11 in
  • Wingspan: 13.3 m 43 ft 8 in
  • Propellers: 2-bladed fixed-pitch propeller
  • Gross weight: 1.949 kg 4.297 lb
  • Powerplant: × Curtiss V-1570 Conqueror V-12 liquid-cooled piston engine, 448 kW 601 hp
  • Wing area: 23.9 m 2 257 sq ft

Performance

  • Service ceiling: 6.440 m 21.130 ft
  • Range: 500 km 310 mi, 270 nmi
  • Power/mass: 0.230 kW/kg 0.140 hp/lb
  • Maximum speed: 266 km/h 165 mph, 144 kn
  • Time to altitude: 5.000 m 16.404 ft in 17 minutes
  • Horizontal turn time: 15 seconds

Armament

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