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在设计方案评定应用中以参量性寿命周期费用(LCC)为主要的评估标准.阐述了最近研究并成功地应用在对未来重复使用的空间运输系统助推火箭的液体火箭发动机评估上的方法学.讨论了用以LCC为基础的原理评估的定量方法,并考虑了所有的次要评定因素和费用评估关系(CER).讨论了研制工作中的技术、费用和进度,及操作和维护寿命期中的风险对LCC的影响.最后,严格地研讨了将这一以LCC为依据的定量评估方法论用作决策支持工具的优缺点,并将它与作者过去用于相似用途的纯定性评定方法作了比较.本方法学虽是一项具体应用,但也可以作为一类决策模型用于其他的机械和电子系统上,例如运输、空间站和高级武器系统用的这类系统上.
The main assessment criteria for parametric life-cycle costs (LCC) are used in the design assessment applications.Researched the methodology used in recent studies and successfully applied in the evaluation of liquid propellant rocket engines for space-transportation-system-assisted rocket reusability in the future Discusses a quantitative approach to assessing principles based on LCC and considers all secondary assessment factors and cost assessment relationships (CERs) Discusses techniques, costs, and schedules in development work, as well as operational and maintenance life cycles Of the risks to LCC.Finally, the advantages and disadvantages of using this quantitative assessment methodology based on LCC as a decision-support tool have been critically discussed and made consistent with the author’s purely qualitative assessment methods used for similar purposes in the past Although this methodology is a specific application, it can also be used as a type of decision-making model on other mechanical and electrical systems such as those used in transport, space stations and advanced weapon systems.