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给出了二元和轴对称两种不同结构形式的进气道进行理论最优设计方法;并以飞行马赫数Ma=2.5,高度H=10km为设计点,计算和比较了两种进气道的性能。结果表明在相同情况下,二元进气道具有相对较高的总压恢复系数,但轴对称进气道出口的气流较均匀、畸变较小,并且马赫数较低。这一结果可为冲压发动机进气道结构形式的选择提供理论依据。
The theoretical optimal design method for two kinds of intake manifolds with different structural forms is given. Two kinds of intake ports are calculated and compared with the Mach number of Mach = 2.5 and the height of H = 10km. Performance. The results show that under the same conditions, the binary inlet has a relatively higher total pressure recovery coefficient, but the airflow at the axisymmetric inlet is more uniform, the distortion is smaller and the Mach number is lower. This result can provide a theoretical basis for the selection of the form of the inlet of ramjet engine.