| Technical data | |
|---|---|
| Type | IL-400b |
| Function | Fighter |
| Year | 1924 |
| Crew | 1 |
| Engines | 1*400hp Liberty/ M-5 |
| Length | - |
| Wingspan | 10.8m |
| Wing area | 20.0m2 |
| Empty weight | 1112kg |
| Loaded weight | 1510kg |
| Wing Load (kg/m2) | 75.0 |
| Power load (kg/hp) | 3.7 |
| Max.Speed at 0m | 264km/h |
| Max.Speed at 3000m | 148km/h |
| Range | 650km |
| Flight Endurance | 2.5h |
| Takeoff Roll | 7.0sec |
| Turn time | - |
| Ceiling | 6750m |
| Climb | |
| 1000m | 1.9min |
| 2000m | 4.0min |
| 3000m | 6.5min |
| 4000m | 9.0min |
| 5000m | 16.0min |
IL-400b N.N.Polikarpov, I.M.Kostkin, A.A.Popov
|
Once cause of IL-400a crash was revealed, aircraft was radically rebuilt. Engine was moved forward, front radiator was replaced by Lamblen radiator. Wing span and tail surfaces area were increased. Wooden structure of the wing ant tail surfaces were made now completely of aluminum alloy ('Kolchugaluminij').
Aircraft rolled out during Spring 1924. After series of flight tests (pilots A.I.Zhukov and A.N.Ekatov) it was accepted for series production.
References:
- "History of aircraft construction in the USSR", Vol.1 p.354-355;
- I-1
- I-1 at Virtual Aircraft Museum
- IL-400, Polikarpov
More Links...
