关键词: 超音速燃烧冲压式喷气发动机;最佳设计;航天飞机主发动机;计算

Abstract: The purpose of this paper is to study the optimization of scramjet engine design. The propulsive force of the engine and the engine cycle analysis have been studied. The results of study show that the optimum value of the specific impulse will be attained in the case of heat addition according to constant area-constant Mach number process when the flight Mach number is within 6-6.6; while the o-ptimum specific impulse will be attained in the case of heat addition according to constant area-constant temperature process when the flight Mach number is within 6.6-10.The performance of scramjet engine is also obtained in this paper using a set of conservation equations with one dimensional flow, involving area change, heat release, skin friction and combustor wall heat transfer.

Key words: Supersonic combustion ramjet engine;Optimum design;Computation;Space shuttle main engine