Jakowlew Jak-50 (1949)

Yakovlev Yak-50
Type:	Interceptor
Design country:	Soviet Union
Manufacturer:	OKB Yakovlev
First flight:	July 15, 1949
Number of pieces:	1

The Jakowlew Jak-50 ( Russian Яковлев Як-50 ) was an all-weather interceptor aircraft . It emerged as the logical continuation of a whole series of test jet aircraft from OKB Jakowlew and was the competition model for Lavochkin La-200 , Mikoyan-Gurevich I-320 and Sukhoi Su-15 .

development

In contrast to its immediate predecessor Jak-30 , the fuselage was lengthened by more than two meters and a tandem landing gear was installed instead of the nose wheel landing gear for the first time in the history of the design office. This landing gear arrangement was later used in series in the Jak-25 . The aircraft was also equipped with a Korschun radio measuring sight , which was placed in the bow above the air inlet duct of the engine .

Sergei Anochin , who had also tested other Yakovlev models, flew the Yak-50 for the first time on July 15, 1949 and tested it until May 30 of next year. In January 1950 he set a new world speed record of 1170 km / h. While the overall flight performance was excellent, the Jak-50 had a few shortcomings, such as a lack of stability in the near-sound speed range and a complicated behavior during take-off and landing, which was due in particular to the landing gear variant chosen to save weight, for which the model was obviously too small and too light was. Ultimately, it was decided to use the MiG-17PF in the role of the all-weather fighter.

The same type designation was given to a sports aircraft much later. See also Jakowlew Jak-50 .

construction

The Jak-50 was a cantilevered middle decker in all-metal construction. The wing had three boundary layer fences on each side and was swept at 45 °. The normal tail was also cantilevered and swept. The landing gear consisted of a main wheel with double tires in the middle of the fuselage and a nose wheel. To ensure stability on the ground, there was a small support wheel attached to struts on each wing, which was folded back in flight. The armament consisted of two machine guns in the fuselage nose.

Technical specifications

Three-sided tear

Parameter	Data
use	Test fighter
crew	1
span	7.98 m
length	11.18 m
height	3.90 m
Wing area	16.00 m²
Preparation mass	3,085 kg
Takeoff mass	4,155 kg
Wing loading	256.00 kp / m²
Engine	a Klimow WK-1 A jet engine
power	2,650 kg static thrust
Top speed	1,135 km / h at an altitude of 10,000 m 1,125 km / h at a height of 5,000 m 1,170 km / h near the ground
Landing speed	200 km / h
Climb performance	68.00 m / s near the ground
Rise time	1:30 min at 5,000 m altitude 3:30 min at 10,000 m altitude 7 min at 15,000 m altitude
Summit height	16,600 m
Range	1,100 km
Flight duration	1 h
Take-off run	587 m
Landing runway	965 m
Armament	2 automatic cannons Nudelman-Richter NR-23 , caliber 23 mm with 80 rounds each

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. 60 .
• Wilfried Bergholz: Jakowlew. Since 1927. Motorbuch, Stuttgart 2017, ISBN 978-3-613-04024-3 , pp. 88/89.
• Karl-Heinz Eyermann : Jet-powered Soviet experimental aircraft . In: Wolfgang Sellenthin (Ed.): Deutscher Fliegerkalender 1968 . German Military Publishing House, Berlin 1967, p. 208/209 .

Web links

Commons : Yakovlev Yak-50 (1949)  - Collection of pictures, videos and audio files

• Яковлев Як-50 (Первый). Retrieved October 22, 2016 (Russian).