地面贮存的固体推进剂火箭发动机日积月累的破坏是由瞬变热应力造成的,而这种应力又依赖于由地理位置所决定的环境温度、自然风以及太阳辐射。一般认为当应力大时会产生较严重的破坏,其实不然,本文研究表明即使在较低的应力下推进剂的粘-弹性特性也会导致严重的破坏。从而,带有保护措施的贮存方式,对发动机的使用寿命并不总是有益的。 The accumulation of ground-stored solid propellant rocket engines over time is caused by transient thermal stresses, which in turn depend on the ambient temperature, natural wind and solar radiation, which are determined by the geographical location. Generally believed that when the stress is large will have more serious damage, it is not true, this study shows that even under low stress, the visco-elastic properties of the propellant can lead to serious damage. Thus, storage with protective measures is not always beneficial to the service life of the engine.