Liquid rocket engines for large thrust: Present and future

The possibility of an increase in economy and rise in efficiency of liquid-propellant rocket engines of launch vehicles and flight vehicles is considered. The characteristics of liquid-propellant rocket engines, made in the Soviet Union, U.S.A., France, Japan, China and other countries, and working on the following fuels: O₂, +H₂, O₂ + kerosene, N₂O₄ + H₂N-N(CH₃)₂, HNO₃ + dimethylhydrazine, etc. are recalled. Ways of further improvement of liquid-propellant rocket engines are outlined and the problems, arising during their realization, are discussed.