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本文概述了三种类型发汗冷却鼻锥的优缺点;对双相自适应发汗鼻锥进行了质疑;提出了单相自适应发汗概念及其气动防热的工程评估方法;进行了评估例算。结果表明:单相方案在与双相方案外形、体积及防热能力基本相同的情况下,可减重约6.6公斤,内腔压力降低约200大气压,内腔温度降低约100℃。此外,单相方案还有可能克服双相方案会遇到的驱动剂与冷却剂“反位”及可能使再入通讯的“黑障”问题恶化的隐患。
In this paper, the advantages and disadvantages of three types of sweating cooling nose cone are summarized. The two-phase adaptive sweating nose cone is questioned. The single-phase adaptive sweating concept and its engineering evaluation method of aerodynamic heat-protection are proposed. The results show that the single-phase scheme can reduce the weight of about 6.6 kg, reduce the pressure in the inner cavity by about 200 atm, and reduce the temperature in the cavity by about 100 ° C under the same shape, volume and heat-protection ability as the biphasic solution. In addition, it is possible to overcome the “single-phase” scenario that drives the “anti-phase” of drivers and coolants encountered with biphasic solutions and the potential for deterioration of the “black barrier” that could reenter communications.