Yakovlev Yes-2
| Yakovlev Ja-2 (AIR-2) | |
|---|---|
| Type: | Training and aerobatic aircraft |
| Design country: | |
| Manufacturer: | |
| First flight: |
1928 |
| Number of pieces: |
6th |
.svg){kind=small}
The Jakowlew Ja-2 ( Russian Яковлев Я-2 , also AIR-2 , АИР -2) was a single-engine, two-seat sports and training aircraft from the Soviet design office Jakowlew .
history
The aircraft originally called AIR-2 was a further development of the Ja-1 (AIR-1) for flight training and aerobatics and was developed by Alexander Jakowlew in 1928 during his studies at the Air Force Academy . It had a 65 hp M-23 engine developed by NAMI . In 1929 a version with a 60 hp Walter NZ drive was added, and in 1931, the AIR-2s, an 85 hp Siemens engine. On May 18, 1931, the waterworthy version was tested on the Moskva .
construction
The Ja-2 was a biplane intended for student pilots and stunt pilots. The Ja-2 consisted of a wooden frame covered with fabric; the front part was planked with plywood. The two seats, one behind the other, received celluloid glazing . The structure had a canopy and was connected to each other and to the fuselage with I-posts. There was also a version of the Ja-2 as a seaplane , which was equipped with floats developed by Vadim Shavrov . Since the Ja-2 had a relatively weak engine, it had to be built very lightly.
Technical specifications
| Parameter | Data of the float version AIR-2s * |
|---|---|
| span | 8.85 m |
| length | 7.70 m (7.05 m) |
| height | k. A. (2.60 m) |
| Wing area | 18.70 m² |
| Wing loading | 38.0 kg / m² |
| Power load | 8.4 kg / hp |
| Empty mass | 470 kg (397 kg) |
| payload | 240 kg |
| Takeoff mass | 710 kg (650 kg) |
| drive | an air-cooled five-cylinder radial engine Siemens ( Walter NZ ) with a fixed two-bladed wooden propeller |
| power | 85 PS (63 kW) (60 PS (44 kW)) |
| Tank capacity | 72 kg |
| Top speed | 140 km / h (125 km / h) |
| Cruising speed | maximum 120 km / h |
| Landing speed | 65 km / h |
| Service ceiling | 3350 m (3500) |
| Climb performance | 1.8 m / s |
| Range | maximum 500 km (540 km) |
| crew | 1-2 |
* Values given in brackets refer to the land version with Walter NZ engine
literature
- Wilfried Bergholz: Russia's great aircraft manufacturer. Jakowlew, Mikojan / Gurewitsch, Suchoj. The complete type book . Aviatic, Oberhaching 2002, ISBN 3-925505-73-3 , p. 16 .
- Heinz A. F. Schmidt: Soviet planes . Transpress, Berlin 1971, p. 159 .
Web links
- Development history AIR-2 (Russian)