1*300kg Khalshchevnikov VRDK
|Wing Load (kg/m2)||245||262|
|Power load (kg/hp)||2.23||2.38|
|Speed at 0m||670km/h||?|
|Speed at 7800m||825km/h||?|
|Speed without VRDK||?||600km/h|
|Climb to 5000m||4.6min||?|
A small all-metal mixed-power fighter with a piston engine in the nose and a VRDK 'booster' in the tail. VRDK was basically a jet engine with a compressor driven by the V.Ya.Klimov engine. It had variable exhaust nozzle. Joined power of both engines was up to 2800hp (at 7000m).
It was very well armed - 3 B-20 cannons provided salvo of 3.84kg/sec. One of cannons was installed to fire through the spinner, two others - on the engine sides, synchronized.
First flight was performed on March 3, 1945. In March-May I-250 passed first test program.
50 (or less than 20?) built, and in service until 1950 with USSR Navy (Baltic and Polar fleet);
|25k B/W photo and 20k B/W drawing (by I.G.Soultanov) at "History of aircraft construction in the USSR", Vol.1 p.240|
|Modified October 14, 1997||Back to|