Развитие схемных решений безгенераторных жидкостных ракетных двигателей

Abstract

Liquid rocket engines working by expanded cycle are used as main engines of upper and 3 rocket stages. The well knows developers are KBKhA (Russia, Angara A5, LRE 0146), Pratt & Whitney (Atlas Centaur-Saturn, RL10). Expanded cycle are particularly effective in applying cryogenic fuel and oxygen components (oxygen, hydrogen, methane, etc.). The basic expanded cycle is closed circuit with the heating of fuel in the regenerative cooling and its subsequent use as working gas to drive an oxygen and fuel pumps. There are three types of expanded cycle: open, closed and mixed. Of these, there are schemes with different features of the components supply. This paper talks about the modification of standard expanded cycle. This paper discussed advantages and disadvantages of the evaluation schemes for cryogenic components in relation to the basic expanded cycle. There is comparison between expanded cycle engines (RL-10, RD-0146) and gas generator engines (SSME (Aerojet RocketDyne), RS-68 (Delta-4), Vulcain,Vulcain-2 (SEP, Ariane 5), LE7 (Mitsubishi, H2), RD-0120 (KBKhA, Energy)).