在存放场地,固体发动机会由于各种瞬时热应力而产生累积性损伤。引起这些瞬时热应力的是环境温度、风、太阳辐照等与地理位置有关的所有一切因素的作用。业已表明,与最大损伤发生在大应力值的假设相反,推进剂的粘弹特性使其在低应力值下出现显著的损伤。因此,防护性贮存对发动机的使用寿命并不总是有利的。 At storage sites, solid engines can experience cumulative damage due to various transient thermal stresses. These transient thermal stresses are responsible for all the geo-related factors such as ambient temperature, wind and solar radiation. It has been shown that in contrast to the assumption that maximum damage occurs at large stress values, the viscoelastic properties of propellants cause significant damage at low stress values. Therefore, protective storage is not always advantageous for the life of the engine.