Technical data |
Type |
AIR-2S Ya-2S |
AIR-2S Ya-2S floatplane |
Function | trainer |
Year |
1931 |
1931 |
Crew |
2 |
Engines |
1*60hp 'Cirrus I' |
Length |
7.0m |
7.7m |
Wingspan |
8.8m |
Wing area |
18.7m2 |
Empty weight |
420kg |
470kg |
Loaded weight |
660kg |
710kg |
Wing Load (kg/m2) |
35.3 |
38.0 |
Power load (kg/hp) |
7.8 |
8.4 |
Maximum Speed at 0m |
150km/h |
140km/h |
Cruise Speed |
130km/h |
120km/h |
Landing Speed |
60km/h |
65km/h |
Landing Roll |
7sec |
7sec |
Takeoff Roll |
- |
20sec |
Ceiling |
- |
3350m |
Range |
- |
500km |
Version of the
AIR-2 with more powerful 'Siemens' engine. Performance was
improved substantially. It became possible to install AIR-2S on floats designed by
V.B.Shavrov.
Floatplane version was flown on May 18,
1931.
Transition from wheels to floats took as little as 1hour 10minutes. Pilot
B.L.Bukhgolts and passenger
V.B.Shavrov
performed short straight flight, and without stopping the engine another 10 minutes circle flight.
Next crew to fly were Ju.I.Piontkovskij and
A.S.Yakovlev.
Aircraft was flown many times on Moscow river (Moscow) without any problems.
More Links:
A.S.Yakovlev Museum;
Yakovlev aircraft at
D.Levin AirPage