Yakovlev Yes-3

Yakovlev Ja-3 (AIR-3)
Type:	Sports and training aircraft
Design country:	Soviet Union
Manufacturer:	Zhukovsky Academy
First flight:	1929
Production time:	1929
Number of pieces:	1

The Jakowlew Ja-3 ( Russian Яковлев Я-3 , also AIR-3 , АИР-3) was a stripped, single-engine two-seat high-wing aircraft.

development

It was created after a fundraising campaign organized by the Moscow children's magazine Pionerskaya Pravda . Yakovlev , at that time a student at the Zhukovsky Military Academy , was able to build the Ja-3 in the summer of 1929. It was based on the Ja-2 biplane . The aircraft was manufactured in the Menschinski factory GAS -39 between April and June 1929. It received the Cyrillic aircraft registration СССР-310 and the first flight was made in September. In 1930 the Ja-3 was developed into the Ja-4. Changes were made primarily in the area of ​​the wings and the landing gear, with the Ja-3 slats and flaps as well as a main landing gear with a split axis.

Flight operations

From August 26, 1929, the students of the Zhukovsky Military Aviation Academy made repeated flights from Mineralnye Vody to Moscow . The 1835 kilometer route was flown through on September 6, 1929 by A. I. Filin and his companion A. F. Korolkow at an average speed of 166.8 km / h. On this flight, the world records for range and average flight speed could be set again.

construction

The fuselage of the aircraft had a wooden frame covered with fabric, which was planked with light metal in the engine area and with plywood in the cockpit area. The Ja-3 was designed as a high -wing aircraft, the wings were supported by two parallel struts on each side towards the fuselage. The three tanks with a total volume of 176 l were located in the center section of the wing. Like the fuselage, the tail unit was covered with fabric. The main landing gear of the Ja-3 received a continuous axle. The Jakowlew Ja-4 was manufactured with a modified chassis .

Technical specifications

Parameter	Data
Construction year	1929
constructor	Alexander Sergejewitsch Jakowlew
crew	2
length	7.10 m
span	11.1 m
height	2.3 m
Wing area	16.50 m²
Empty mass	392 kg
Takeoff mass	762 kg
Wing loading	46.3 kg / m²
Power load	12.7 kg / hp
Engine	1 ×  Walter NZ -60 with 60 PS (44 kW), from 1931 M-23 with 65 PS (48 kW)
Tank volume	176 kg
Top speed	146 km / h
Cruising speed	125 km / h
Landing speed	66 km / h
Climb performance	2.1 m / s
Range	1835 km
Summit height	4200 m
Take-off run	60 m

literature

• Wilfried Bergholz: Jakowlew since 1927 . Motorbuch, Stuttgart 2017, ISBN 978-3-613-04024-3 , p. 20/21 .
• Wilfried Bergholz: Russia's great aircraft manufacturer. Jakowlew, Mikojan / Gurewitsch, Suchoj. The complete type book . Aviatic, Oberhaching 2002, ISBN 3-925505-73-3 , p. 17 .
• Wilfried Copenhagen , Jochen K. Beeck: The large aircraft type book . Motorbuch, Stuttgart 2005, ISBN 978-3-613-02522-6 , p. 445 .
• Heinz A. F. Schmidt: Soviet planes . Transpress, Berlin 1971, p. 160 .

Web links

Commons : Jakowlew Ja-3  - collection of pictures, videos and audio files

• Яковлев АИР-3 Пионерская правда. Retrieved February 22, 2018 (Russian, History of Development).