Aviation of World War II |
Soviet Union | Lend - Lease | Facts | Forum | Germany | Japan | R A F | U S A A F | Other | Photos | ||
Aircraft | Combat Use | Armament | Bartini | Beriev | Ilyushin | Lavochkin | Mikoyan | Petlyakov | Polikarpov | Sukhoy | Tupolev | Yakovlev | Yermolaev | Other | People & Aircraft | Photos & Drawings | ||
Yak-9PD
Another direction in the development of the Yak-9, which for some time was given increased attention by the Yakovlev Design Bureau, were attempts to improve the altitude of the fighter. The actual ceiling of the Bf 109 was much higher than that of Yakovlev's machines, amounting to 11500 m for the Bf 109G-2, and 12100 m for the G-6. At altitudes above 5000 m, they significantly surpassed all Yaks. Stalin was greatly annoyed by the flights over Moscow in 1942-1943 by German reconnaissance aircraft Ju-86R-1. None of the Soviet and Lend-Lease aircraft were able to "get" them. The first Yak-9PD fighter with an M-105PD engine, equipped with a Dolezhal E-100V two-stage supercharger, was created by order of the State Defense Committee on November 12, 1942; five aircraft were built. They were transferred for military tests to the 12th Guards IAP under the command of K. Marenkov, which is part of the 6th IAK Air Defense. The armament consisted of a ShVAK motor-gun with 120 rounds. The plane could not stand the military tests, tk. was not capable of continuous climb. The water temperature reached 120 ° С, oil - 100 ° С. The maximum height reached was about 11,650 m. The set was made intermittently to "cool down" ... After unsuccessful attempts to intercept German scouts on June 2 and July 22, 1943, by a GKO decree, A. Yakovlev was given the task to bring the Yak-9PD altitude to 13,000 m.The modified Yak-9 with the M-105PD was tested at the Flight Test Institute (LII) from 3 August to October 18, 1943. The maximum altitude reached was 12,500 m, the climb time was 33.2 minutes, the climb was carried out at a reduced engine operating mode due to overheating of the air in the supercharger. At high altitudes, the pressure drop in the main line led to interruptions in the operation of the engine, i.e. "Circumcision". The plane did not have a sealed cockpit. |
Aircraft | Glossary | USSR | Yakovlev | UT-1 | UT-2L | UT-2M | Yak-2 | Yak-4 | Yak-6 | Yak-1 | Yak-7 | Yak-7V | Yak-1M | Yak-3 | Yak-9 | Yak-9D | Yak-9M | Yak-9R | Yak-9T | Yak-9U | Yak-9P | Yak-9PD | Yak-9V | Photos & Drawings | Combat Use Combat Use | UT-1B | BB-22 | Yak-7/9 | Crimean Spring 1944 | |