Technical data
Type DI-2
Function Fighter
Year 1929
Crew 2
Engines 1*500/750hp BMW VI 7,3
Length 8.20m
Wingspan 11.0m
Wing area 27.85m2
Empty weight 1557kg
Loaded weight 2112kg
Wing Load (kg/m2) 67.0
Power load (kg/hp) 2.9
Speed at 0m 256km/h
Speed at 5000m 243km/h
Landing Speed 100km/h
Landing Roll 250m
18sec
Takeoff Roll 180m
14sec
Turn time 14sec
Range 510km
Flight Endurance 2h00min
Ceiling 6300m
Climb
1000m 1.8min
2000m 3.7min
3000m 7.2min
5000m 17.5min
Armament
Guns (synchronized) 2*mg7.62mm PV-1
Guns (rear turret) 2*mg7.62mm PV-1

DI-2, D-2 by N.N.Polikarpov

24k b/w photo from "History of aircraft construction in the USSR", Vol.1 p.385

Two-seat version of the I-3. DI-2 had same powerplant, rear gunner cockpit with twin machinegun turret, increased tailfin and 8° 'V' tailplane.

Increased weight resulted in significant performance loss, but luck of competing designs paved way for small series production of DI-2. Production was cancelled after pilot A.V.Chekarev was killed when DI-2 lost tailplane to flutter during high speed dive trials.

DI-2 was not perfect, but it provided some room for modifications. Following DI-3 turned to be even worser...

PredecessorsModifications

I-3
???

ReferencesLinks
  • "History of aircraft construction in the USSR", Vol.1 p.385-386;
  • DI-2, Polikarpov
  • DI-2

  • Modified July 28, 1998 Back to
    Main Gate