Engines of KBKhA development. Russia’s first engine made by scheme without gas generator. The world’s first rocket engine made by twin-shaft scheme of independent supply of propellant components with consistent gas supply to turbines. This circumstance allowed us to demonstrate the efficiency of the supply system with the best characteristics of the units. The engine composition includes a low speed boost pumps, providing engine performance at low tank pressures of the components.

In the framework of creation of RD-0146D engines family tests were carried out: on liquid oxygen + liquefied natural gas, with the use of laser ignition system, with simulated vacuum conditions at the nozzle section with gas-dynamic tube.