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ENTRY SYSTEM DEVELOPMENT FOR MARTIAN LANDERS

机译：火星着陆系统的开发

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EADS launch vehicles is currently responsible for the development of entry thermal protection (TP) system for several Mars landing missions: 1. Beagle2, due to be launched with ESA Mars Express in 2003. 2. The four NetLander probes, due to be launched in 2007, in the frame of the CNES program Mars Premier. EADS-LV has based its technical choices, for both Beagle2 lander and NetLander landers network, on existing technology well adapted to this new application, the Norcoat Liege, a lightweight ablative material. The main objective of this approach is to reduce the development risks, to control the cost and to capitalize on a huge reentry experience and on a sound industrial basis. The material existing from previous developments (launchers and earth atmospheric reentry) has been adapted to its new application, and research and development (R&D) activities are continuing to even better fit to planetary exploration constraints: 1. Low outgassing properties have been achieved for the Norcoat Liege, compliant with common specification, and a new space grade adhesive has been qualified. 2. Decontamination and sterilization methods have been validated for the thermal protection system (TPS) (ablative tiles and adhesive/joints material). 3. New manufacturing methods are implemented to produce bigger tiles, allowing significant cost reduction and decrease of joints length. 4. Material behavior has been demonstrated in extreme conditions combining heat loads of 1.6 kW/m~2 and aerodynamic shear stress for confidence in the robustness of the concept. Test installation is currently modified to reach values in excess of 2 kW/m~2 to be able to cover even more demanding missions.
机译：EADS运载工具目前负责为多个火星着陆任务开发进入热保护（TP）系统：1. Beagle2，定于2003年与ESA Mars Express一起发射。2.四个NetLander探测器，定于2004年发射。 2007年，在CNES计划“火星总理”的框架内。 EADS-LV基于Beagle2着陆器和NetLander着陆器网络的技术选择，是基于非常适合这种新应用的现有技术，即轻型烧蚀材料Norcoat Liege。这种方法的主要目的是减少开发风险，控制成本并利用丰富的再入经验和稳健的工业基础。先前开发（发射器和地球大气再进入）中已有的材料已经适应了其新应用，并且研发（R＆D）活动正在继续更好地适应行星勘探的局限性：1.已实现了低脱气性。符合通用规范的Norcoat Liege和一种新型太空级粘合剂均已通过鉴定。 2.热保护系统（TPS）（消融砖和粘合剂/接缝材料）的去污和灭菌方法已得到验证。 3.实施了新的生产方法来生产更大的瓷砖，从而显着降低了成本并缩短了接缝长度。 4.在极端条件下已经证明了材料的性能，该条件结合了1.6 kW / m〜2的热负荷和气动剪切应力，从而使该概念的可靠性得到了保证。目前已对测试设备进行了修改，使其值超过2 kW / m〜2，从而能够满足更高要求的任务。

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