Through TsIAM he developed a type of "accelerator" or a compressor driven by a piston engine ( Klimov VK-107A, or M-197A).

-It consisted of a 3-stage compressor that sent the air and it is said that the exhaust gases of the piston engines went through the water radiator to a chamber with seven injectors that increased the speed with a thrust of 660 lbs

-It was the Khalschevnikov VRDK.

“I-250”

-Ity was tested on I-250 prototypes and on the I-300. In the photograph we see the exhaust outlet through the tail cone opening.

“VRDK schematic drawing”

Sometimes written as Kolchevnikov (see also).

From Appendix 10: During WWII this engineer together with Feedev made a plane powered by a traditional engine (VK-107R) that drove a traditional propeller with a post-burner as a motorjet. Project E-3020. (see chapter M-).

“El proyecto E-3020”

-A compressor driven by the main engine (above) introduced pressurized air into a rear chamber as a post-combustion to produce an increase in thrust.

-The gained speed was not compatible with weight gain and exaggerated fuel consumption. This plane was the I-250, It seems that there were derivatives like the one in the previous graphic and also an I-320.

Kholshchevnikov (English literature) also written Khalschevnikov (Spanish literature). See both chapters.

“Designer Konstantin Vasilievich Kholshchevnikov”