Lavochkin La-160
The Lavochkin La -160 " Strela " (Russian Лавочкин Ла -160 " Стрела " for arrow, NATO reporting name "Type 6") was the first Soviet jet aircraft with swept wings.
Development
The work began in 1946 with evaluation of captured German research documents. The 35 -degree swept wings were mounted on a La -152 cell, what had to be conditionally extended by the shift in focus, the hull. The tail was also swept. The drive was the RD -10 engine, a replica of the German Jumo 004- unit, is provided. As this turbine was relatively inefficient, the OKB Merkulov developed a suitable afterburner. The resulting combination was designated RD -10F. The La -160 made its first flight in July 1947 and was presented at the air parade in Tushino on August 3, 1947 to the public. The flight test was conducted from October 1947 to the spring of 1948, among others, test pilot Ivan Fyodorov Yevgrafovich, while the first time, more than 1050 km / h reached in 5700 m height. In the course of further tests yielded the La -160 important insights into the aerodynamics at high speeds as well as the static structure of swept wings that went into the development of more modern aircraft types. Thus, the two boundary layer fences for the first time used in the La -160 and the arrow wings were inserted into the development program of the nascent MiG -15. Although the " Strela " was not built in series, but it served to train selected pilots to get them used to the propeller -less jets. A scheduled by Lavochkin design with Derwent engine was not approved.