Technical data
Type P-2
Function Transitional trainer
Year 1927
Crew 2
Engines 1*300hp M-6
Length 7.84m
Wingspan 10.4m
Wing area 28.0m2
Empty weight 1000kg
Loaded weight 1470kg
Wing Load (kg/m2) 52.0
Power load (kg/hp) 4.8
Speed at 0m 208km/h
Landing Speed 85km/h
Landing Roll 16sec
Takeoff Roll 7sec
Turn time 14sec
Range 800km
Flight Endurance 4.0h
Ceiling 5680m
1000m 3.3min
2000m 7.7min
3000m 12.7min
5000m 32.0min
Guns 1*mg defensive

P-2, N.N.Polikarpov

"History of aircraft construction in the USSR", Vol.1 p.391;

Biplane 2-seat trainer with 224kW M-6 engine. Aircraft was intended for transitional (Perekhodnyj, so "P" stays) training from U-2 to R-5. It differed from all contemporary Soviet biplanes by single diagonal strut replacing wing lift and ant-lift wires. The idea was to simplify tuning of biplane box. This technic worked fine on pre-production aircraft.

Factory 'Red Pilot' started production in 1928. Once aircraft came into service, problems started to rise with wing adjustment. Moreover, P-2 started to show dangerous delays during spin. More than 200 flights were performed to improve spin behavior. In process of wing adjustment designers had to return to bracing tapes, try several lengths of struts, incidence angle for upper and lower wing.

Result was quite predictable - 'over-adjusted' wings collapsed in flight. Pilot B.L.Bukhgolts baled out with parachute. P-2 saw very limited service, and retired R-1 were used as transitional trainers.

Only 55 built in 1928- 1930.




More Links...
  • P-2, Polikarpov

  • References:
  • "History of aircraft construction in the USSR", Vol.1 p.391;

  • Modified February 03, 1998; Back to
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