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首页> 外文会议>AIAA Aerospace Sciences Meeting >Characterization of a 50kW Inductively Coupled Plasma Torch for Testing of Ablative Thermal Protection Materials
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Characterization of a 50kW Inductively Coupled Plasma Torch for Testing of Ablative Thermal Protection Materials

机译：50kW电感耦合等离子体焊炬的表征，用于测试烧蚀热保护材料

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With the development of new manned spaceflight capabilities including NASA's Orion capsule and the Space-X Dragon capsule, there is a renewed importance of understanding the dynamics of ablative thermal protection systems. To this end, a new inductively coupled plasma torch facility is being developed at UT-Austin. The torch operates on argon and/or air at plasma powers up to 25 kW for input power up to 50 kW. In the present configuration the flow exits from a low-speed subsonic nozzle and the hot plume is characterized using slug calorimetry and emission spectroscopy. Measurements using emission spectroscopy have indicated that the torch is capable of producing an air plasma with a temperature between 5,000 K and 8,000 K depending on the power and flow settings and an argon plasma with a temperature of approximately 12,000 K. The temperature falls off from the central peak value by approximately 1,000 K at a radius of 8 mm. The facility operation envelope was determined, and heat flux was measured for selected points within the envelope using both a slug calorimeter and a Gardon gauge heat flux sensor. The torch was found to induce a stagnation point heat flux of between 90 and 225 W/cm~2. A small asymmetry of unknown cause which increases with increasing mass flow rate was found in the radial variation of heat flux.
机译：随着新的载人航天能力的发展，包括美国宇航局的Orion太空舱和航天-X龙胶囊，有理解烧蚀热防护系统的动态重新重视。为此，一个新的感应耦合等离子炬设施正在在UT-奥斯汀显影。焊炬上氩气和/或空气中在等离子体电至25千瓦的输入功率工作在高达50千瓦。在本结构中，从低速亚音速喷嘴和热羽流出口是使用金属块量热法和发射光谱表征。使用发射测量光谱表明，焊炬能够根据功率和流量设置，氩等离子体具有大约12000的温度下与5000 K和8000 K的温度下产生空气等离子体的K的温度从脱落中央峰值大约1000处的K为8毫米的半径。设备操作包络被确定，并同时使用一蛞蝓量热计和加尔东河计热通量传感器的信封内的选定点处测量的热通量。火炬，发现诱导W /厘米〜2和225之间90的滞流点的热通量。原因不明的小的不对称性，其与增加的质量流率增加的热通量的径向变化被发现。

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