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首页> 外文期刊>Journal of the British Interplanetary Scoiety >The Role of Heavy Lift Vehicles in a Reusable Launch Vehicle Based Infrastructure
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The Role of Heavy Lift Vehicles in a Reusable Launch Vehicle Based Infrastructure

机译：重型起重车辆在可重复使用的运载火箭基础设施中的作用

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A Reusable Launch Vehicle (RLV) should be sized to minimise the specific launch costs and this probably means a payload around 10 tonnes and the 4.5 m diameter envelope, both similar to the Space Shuttle capability. This sizing means large payloads, in particular orbital infrastructure systems, if launched on the RLV would have to be carried in many pieces and assembled in orbit. It has been argued that while this approach leads to the lowest launch cost the savings are lost in the extra costs imposed on other factors in the overall acquisition cost. Using a Heavy Lift Vehicle (HLV) with high specific launch costs but able to launch the system in one piece would lead to lower overall acquisition costs. The paper explores the requirements for an HLV designed to support an RLV and proposes a payload of around 40 tonnes and a diameter of 7 meters. It explores three candidate systems Ariane 5 with enlarge payload fairing, an HLV variant of the Space Shuttle and a new reusable system. The most cost effective is the new system but its economic risk and acquisition cost is clearly not sustainable in parallel with an RLV development. However both Ariane 5 and a Shuttle based system could be used as transition launchers for the early stages of RLV operations, with a new HLV system development following when its market is established.
机译：可重复使用的运载火箭（RLV）的尺寸应尽量减少特定的运载成本，这可能意味着有效载荷约为10吨，直径为4.5 m，这两者均类似于航天飞机的能力。这种尺寸调整意味着大型有效载荷，特别是轨道基础设施系统，如果在RLV上发射，则必须分多段携带并在轨道上组装。有人认为，尽管这种方法导致最低的发射成本，但节省的成本却因总购置成本中其他因素所造成的额外成本而损失了。使用重型起重车辆（HLV），具有较高的特定发射成本，但能够一次发射该系统，从而可以降低总体购置成本。本文探讨了为支持RLV而设计的HLV的要求，并提出了约40吨，直径7米的有效载荷。它探索了三个具有扩大有效载荷整流罩的候选系统Aria​​ne 5，航天飞机的HLV变体和新的可重用系统。最具成本效益的是新系统，但与RLV的发展同时，其经济风险和购置成本显然无法承受。但是，Ariane 5和基于Shuttle的系统都可以用作RLV运营早期阶段的过渡发射器，随着其市场的建立，将开发新的HLV系统。

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