Yakovlev Yes-1
| Yakovlev Ja-1 (AIR-1) | |
|---|---|
 Alexander Jakowlew in front of the Ja-1 |
|
| Type: | Light aircraft |
| Design country: | |
| Manufacturer: | |
| First flight: |
May 12, 1927 |
| Number of pieces: |
1 |
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The Jakowlew Ja-1 Avijetka ( Russian Яковлев Я-1 Авиетка , also: AIR-1 , АИР-1) was a Soviet double-decker aircraft. It was the first powered airplane built by Alexander Jakowlew and was manufactured as a single copy.
development
Yakovlev, who at the time was an engine manager in a working group at the Air Force Military Academy, was also occupied with construction problems in aircraft construction. After the support of the aerodynamicist Vladimir Pyschnow , the board of the OSSOAWIACHIM granted him funds for the construction and development . Work began in 1926 and eight months later Julian Piontkowski took off on the successful maiden flight on May 12, 1927.
The machine was stable and easy to fly. The trial also included an overland flight Moscow-Kharkov-Sevastopol-Moscow from Piontkowski and Yakovlev. They covered 1420 kilometers in 15 hours and 30 minutes, which was a world record for speed and distance for sport aircraft. In response to the successful construction, Yakovlev was appointed to the Air Fleet Academy as a designer . The abbreviation AIR, also used, refers to the politician Alexei Ivanovich Rykow .
description
The Ja-1 was a light construction with a wooden frame and fabric covering, the planking in the bow area was made of plywood. The wings had a Göttingen 387 profile and were connected to one another and to the fuselage by I-posts, the structure was also braced. The chassis was rigid with a continuous axle and a grinding spur at the rear.
Technical specifications
| Parameter | Data |
|---|---|
| Construction year | 1927 |
| constructor | Alexander Sergejewitsch Jakowlew |
| crew | 2 |
| length | 6.99 m |
| span | 8.85 m |
| height | 2.65 m |
| Wing area | 18.7 m² |
| Empty mass | 335 kg |
| Payload | 200 kg |
| Takeoff mass | 535 kg |
| Wing loading | 28.6 kg / m² |
| Power load | 8.9 kg / hp |
| Engine | an air-cooled four-cylinder in - line engine A.DC Cirrus I |
| Starting power | 60 hp (44 kW) |
| Tank volume | 50 kg |
| Top speed | 140 km / h |
| Cruising speed | 120 km / h |
| Landing speed | 60 km / h |
| Climb performance | 2.1 m / s |
| Range | 480 km |
| Summit height | 3800 m |
| Take-off run | 90 m |
See also
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. 15 .
- Heinz A. F. Schmidt: Soviet planes . Transpress, Berlin 1971, p. 158 .
Web links
- Yakovlev Piston Trainers & Stunters. www.airvectors.net, accessed April 4, 2020 (English).