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A MOON AND DEEP-SPACE ACCESSIBILITY STUDY VIA SYSTEM-OF-SYSTEMS APPROACH

机译:通过系统系统方法的月亮和深空辅助性研究

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During the last decade the design of space missions and exploration architectures have become more complex and articulated than before. More ambitious mission-objectives and reduced budgets forces the engineering teams to carefully assess all the alternatives to focus the energies only on the most promising architectures. In this paper a system-of-systems approach to space-mission architectures design, to support the engineering team and the decisionmakers during the trade-off activities, is described. A system-of-systems is formed of several interacting elements and sub-elements whose overall behaviour is usually different than the sum of the effects of the single elements. The objective of the method presented in this paper is to support the design of complex space-mission architectures, starting from the mission objective and the major top-level requirements, by automatically generate and evaluate different scenarios. The method generates different architectures with the definition of the systems and the phases in which they will be used. The systems taken into account comprehend modules for human support in space and propulsion modules. The mission architectures are then quantitatively and qualitatively evaluated. A comparative scenario cost-analysis is performed taking into account mission architecture, masses, technical complexity and system design. Finally, a mission success qualitative figure is estimated through mission duration, complexity and systems technology readiness level. As an example, a study on a hypothetical future space station to be implemented as a, safe haven for cis-lunar missions and as a re-usable spaceship for deep-space missions is presented. The results have been obtained with the objective of minimizing the cost index, and maximizing the mission success and mission value. The results demonstrated that a Skylab-like space station, thus with a single volume, performs better than a multi-module space station in most of the cases. A dual-volume space station would allow for an increased level of the performances, only at a much higher cost. The results presented in this paper have been obtained in cooperation with Thales Alenia Space-Italy, in the framework of a regional programme called STEPS.
机译:在过去的十年中,空间任务和勘探架构的设计变得更加复杂和铰接。更雄心勃勃的使命目标和减少的预算迫使工程团队仔细评估所有替代品,只能在最有前途的架构上集中精力。在本文中,描述了一种系统的系统方法,用于在权衡活动期间支持工程团队和决策者来支持工程团队和决策者。系统系统由多个交互元件和子元素形成,其总体行为通常与单个元素的效果的总和不同。本文介绍的方法的目的是支持从使命目标和主要的顶级要求开始的复杂空间 - 任务架构的设计,通过自动生成和评估不同的场景。该方法使用系统的定义和将使用它们的阶段生成不同的架构。考虑到空间和推进模块的人类支持的模块考虑了该系统。然后定量和定性评估任务架构。考虑到使命架构,群众,技术复杂性和系统设计进行比较情景成本分析。最后,通过任务持续时间,复杂性和系统技术准备水平估计了任务成功定性人物。例如,提出了一个假设未来空间站的研究,以实现为CIS-LONAR任务的一个安全避风港,并作为深度空间任务的可重用宇宙飞船。已经获得了结果,目的是最大限度地减少成本指数,并最大化任务成功和使命价值。结果表明,在大多数情况下,具有单个体积的平面空间站比单模空间更好地执行。双体积空间站将允许更高的性能水平,仅以更高的成本。本文提出的结果是与Alenia Space-Italy的合作获得,该结果在一个致电阶段的区域计划的框架中。

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