Developments of Platelet Injector Diffusion Bonded for Throttleable Rocket Engine to Space Control Equipment

摘要

A highly efficient combustion and simplified systems are keys to the reaction control systems (RCSs) of space planes and satellites. A throttleable rocket engine is expected to reduce RCS weight by minimizing the number of engines and to improve reliability by simplifying the system. A throttleable rocket engine with a platelet injector was developed and combustion efficiency evaluated. The injector face of the platelet injector consists of 60 facets of 0.1-mm-thick duplex stainless steel. Each facet has several pairs of holes laser-drilled in different patterns. Facets are sequenced and diffusion -bonded to form several pairs of complicated 3 -D orifices for fuels and oxidizers. Hot-firing tests showed a 280-s specific impulse and 91percent combustion efficiency in a throttled range of 10-100percent.