冲压发动机力学环境特点分析

Study on the dynamical environments of ramjet motor

利用某冲压发动机直连试车试验力学环境测量结果,分析总结了冲压发动机的噪声、振动以及冲击等环境特点和规律,并与常规固体发动机进行了对比,最后与飞行振动环境进行了天地相关性分析,印证了DEF STAN 00-35标准中"强烈建议必须根据飞行测量结果确定冲压导弹的振动试验条件"的结论,可为冲压飞行器的力学环境设计提供参考。

With the dynamical environmental measurements of a ramjet motor in its connected-pipe static fairing test,the characteristics and regularities of dynamical environments,such as vibration,shock and noise,are analyzed and summarized,compared with the dynamical environments of typical solid rockets.At last,the correlation between ground and flight vibration is conducted.It is validated that“The characteristics of ramjet motors do not usually permit vibration levels to be formulated with any degree of confidence.It is strongly recommended that vibration test severities for ramjet powered missiles should be derived from flight measured data”in DEF STAN00-35.Those works can be referenced in the dynamical environmental design of ramjet powered missiles.