| 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 200m |
| Takeoff Roll | 7sec 80m |
| Turn time | 14sec |
| Range | 800km |
| Flight Endurance | 4.0h |
| Ceiling | 5680m |
| Climb | |
| 1000m | 3.3min |
| 2000m | 7.7min |
| 3000m | 12.7min |
| 5000m | 32.0min |
| Armament | |
| Guns | 1*mg defensive |
P-2, N.N.Polikarpov
|
|
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.
More Links...
References:
