Thermal jet
A thermal jet (also known as a motorized air jet engine, motorized jet engine or, less commonly , motor jet ) is the simplest form of a jet engine . Instead of a turbine , a driving piston engine a compressor on. The air compressed in this way is fed into a combustion chamber , mixed with injected fuel and burned. The thermal expansion of the hot gas is used as a thrust for propulsion.
Research stopped at the end of World War II when it became clear that turbojets (turbine air jet engines - TL) were by far the better solution and also offered better power to weight ratio .
The first application of the principle was by the Romanian inventor Henri Marie Coandă in his Coanda-1910 plane in 1910.
Probably the most famous aircraft that used this propulsion principle was the Italian Campini-Caproni CC2 (also Campini-Caproni N.1 ), which flew for the first time on August 27, 1940.
The Soviet Mikoyan-Gurevich MiG-13 and Sukhoi Su-5 used a similar propulsion system known as the Cholschtschewnikow accelerator , but in combination with a conventional propeller ( mixed propulsion ).