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 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);
"History of aircraft construction in the USSR" by
V.B.Shavrov, Vol.1 p.241;
More Links :
Virtual Aircraft Museum
The Jet Genesis