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THE HYPERSONIC PRE-X VEHICLE: CURRENT STATUS

机译：HYPERSONIC PRE-X车辆：当前状态

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With the perspective of developing a Reusable Launch Vehicle (RLV) in the next decades, a mid-term master plan has been agreed in Europe to secure its development and to obtain proof of its economic efficiency. Following a step-by-step approach, which underlies the Future Launcher Preparatory Program (FLPP) proposed by ESA, this master plan cross-links both on-ground and in-flight demonstrations in addition to system studies. Focusing on the in flight demonstrations, the CNES, the French Space Agency, has engaged with EADS SPACE Transportation, as leading contractor, the feasibility study of a re-entry vehicle fulfilling both its technical and programmatic requirements: this is the Hypersonic Pre-X. It appears as a very good candidate for the Intermediate experiment Vehicle (IXV) that is viewed as the most challenging and ambitious short term step. Pre-X main objectives are twofolds. The first objective is to test reusable TPS which are currently available in Europe and which could be used for a RLV. The second objective, which is of great importance for the sake of an in-flight experiment, is to gather AeroThermoDynamics (ATD) data in the hypersonic regime, and to improve the process of in flight measuring the right output at the right time. This paper describes how the Pre-X industrial team proposes to fulfil these objectives. The reference definition current status of the vehicle and its mission are extensively provided enlightening the main Experiment and System drivers. This 4 m long gliding spacecraft, weighing 1.5 metric tons and with a Lift-to-Drag ratio of about 1, performs an hypersonic guided and controlled re-entry by means of active body flaps. The main functional subsystems without any further experiments are highly retrofitted from existing space programs as it is common sense for this class of projects. Pre-X is targeted to developed within a timeframe of 3.5 years.
机译：以在未来几十年开发可重复使用的运载火箭（RLV）为远景，欧洲已达成一项中期总体计划，以确保其发展并获得其经济效率的证明。遵循循序渐进的方法，该方法是ESA提出的“未来发射器准备计划”（FLPP）的基础，该总体规划除进行系统研究外，还将地面和飞行中的演示相互关联。法国航天局（CNES）专注于飞行演示，已与EADS SPACE Transportation作为主要承包商合作，对可同时满足其技术和程序要求的再入飞行器进行可行性研究：这是Hypersonic Pre-X 。它似乎是中级实验车辆（IXV）的极佳候选者，被视为最具挑战性和雄心勃勃的短期举措。 X之前的主要目标是双重的。第一个目标是测试可重复使用的TPS，这些TPS目前在欧洲可用，并且可以用于RLV。第二个目标对于进行机上实验非常重要，它是在高超声速状态下收集AeroThermoDynamics（ATD）数据，并改善在正确的时间测量正确的输出的飞行过程。本文介绍了Pre-X工业团队如何建议实现这些目标。广泛提供了参考定义车辆的当前状态及其任务，以启发主要的实验和系统驾驶员。这款长4 m的滑行航天器重1.5公吨，升力/阻力比约为1，可通过主动襟翼执行高超音速引导和控制再入。无需任何进一步实验的主要功能子系统就可以从现有空间程序中进行高度改造，因为此类项目是常识。 Pre-X的目标是在3.5年内开发。

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