本标准规定了美国国家航空航天局（NASA）液体燃料空间推进系统发动机的强度和寿命评估要求。本标准中使用的术语“寿命”指疲劳和蠕变。这些要求涉及分析和测试，以从结构上鉴定发动机。这些要求中未提及发动机热燃试验的总体系统要求；然而，此类试验的最低数量应与结构分析和试验一起进行，以鉴定发动机的结构。 这些要求定义了NASA可接受的最低结构要求。这些要求规定了分析和测试因素、裕度和其他参数（如适用）。在某些情况下，这些要求通过参考其他标准来表达。美国国家航空航天局认可。奥西。

This Standard provides strength and life assessment requirements for National Aeronautics and Space Administration (NASA) liquid-fueled space propulsion system engines. The term "life," as used in this Standard, refers to fatigue and creep. The requirements address analyses and tests to qualify an engine structurally. The total system requirements for engine hot-fire tests are not addressed in these requirements; however, a minimum number of such tests are to be conducted in conjunction with structural analyses and tests to qualify the engine structurally. These requirements define the minimum structural requirements acceptable to NASA. These requirements specify analyses and test factors, margins, and other parameters, where appropriate. In some cases, these requirements are expressed by reference to other Standards. NASA Endorsed. OCE.