Viktor Bakhirev, an engineer from Nalchik, developed a new gas turbine engine that combines the features of a classic gas turbine engine and a two-stroke piston engine. The development received an unusual scheme of fuel combustion in a closed chamber volume.
Bakhirev proposed placing three combustion chambers inside the engine, arranged in a circle at an angle of 120 degrees. Inside them are spiral ribbons that should increase the path of the air flow and improve the process of mixing fuel with air.
The main feature of the design is that the working processes here are not continuous (like in a conventional turbojet engine), but cyclic, resembling the operation of a two-stroke internal combustion engine.
As the rotor rotates, the chambers are successively purged with air, receive a new portion of fuel, and ignite the mixture due to hot gases from the previous chamber.
The patent states that this scheme allows increasing the pressure in the combustion chamber in several ways at once: due to the compressor, the transition of combustion products, and re-ignition of the mixture.
Two independent nozzles are provided for engine operation – one is responsible for the economical mode, the second for the afterburner mode.
