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Payload Modules for Space Vehicles

机译：航天器的有效载荷模块

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Modularity is a very attractive concept, providing customers with equipment tailored to their exact needs, while manufacturers maximise their return on investment. Speed is another benefit, while weight and volume are always critical in spacecraft, and modular systems can end up being heavier and bulkier than some alternatives. This article looks at the promise of time-scales between specifying and ordering a spacecraft and getting it into orbit cut from years to months or less. Modularity requires investment in infrastructure, such as standardised mechanical, electrical, cooling, and data interfaces; and impacts numerous other issues, such as electromagnetic shielding and thermal management. Nevertheless, the idea has spawned efforts such as the USAF's Modular Space Vehicle (MSV) programme. MSV was to have a multi-mission radio frequency payload, initially serving as a synthetic aperture radar, until changed priorities within the USAF's Operationally Responsive Space (ORS) office led to its cancellation. However, industry persevered with key concepts, Sierra Nevada Corp. (SNC), for example, using the Multi-Mission Space Vehicle (MMSV) flexible, scalable bus architecture as the basis for its current offerings.
机译：模块化是一个非常诱人的概念，可为客户提供根据其确切需求量身定制的设备，而制造商则可最大程度地提高投资回报率。速度是另一个好处，而重量和体积在航天器中始终至关重要，而模块化系统最终可能会比某些替代方案更重，更笨重。本文着眼于在指定和订购航天器以及从几年到几个月或更短的时间使其进入轨道之间的时间尺度承诺。模块化要求对基础设施进行投资，例如标准化的机械，电气，冷却和数据接口；并影响许多其他问题，例如电磁屏蔽和热管理。然而，这个想法催生了诸如美国空军的模块化太空飞行器（MSV）计划之类的努力。 MSV将拥有多任务射频有效载荷，最初是用作合成孔径雷达，直到美国空军作战响应空间（ORS）办公室的优先级发生变化导致其取消为止。但是，业界一直坚持关键概念，例如，内华达山脉公司（SNC）使用多任务太空飞行器（MMSV）灵活，可扩展的总线体系结构作为其当前产品的基础。

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