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用模拟试验研究各种脱粘和裂缝燃烧对发动机造成的故障效应,为故障诊断和失效分析提供依据。自由装填限燃包覆层装药的脱粘燃烧,造成燃面增大和由于压力升高造成的燃速指数增大效应;具有贴壁的限燃包覆层的装药脱粘燃烧,还会产生极其强烈的侵蚀燃烧效应。浅裂缝燃烧只是造成燃面增大的效应;而深裂缝装药燃烧,还会产生极其强烈的侵蚀燃烧效应。无论是贴壁的限燃包覆层的装药脱粘燃烧或是深裂缝装药燃烧,均会在发动机点燃的初期,产生十分强烈的压力峰,如果燃烧室的安全裕度不是特别大,则会在发动机点燃后的短暂时间内发生爆炸。
The simulation test is used to study the fault effect caused by various debonding and crack combustion on the engine and provide the basis for fault diagnosis and failure analysis. Free-charge de-combustible combustion of a detonating-sheath coating, resulting in an increase of the combustion surface and an increase of the burning rate index due to the pressure increase; detonation burning of an adherent, Produces extremely aggressive combustion effects. Shallow crack combustion is only caused by the combustion surface increases the effect; and deep crack charge combustion, but also have a very strong erosion and combustion effects. Whether it is adherent wall-burning coating de-bonding combustion or deep crack charge combustion, will be in the early stages of ignition, the engine produces a very strong pressure peak, if the combustion chamber safety margin is not particularly large, It will explode within a short time after the engine is ignited.