The invention relates to a phase change sweating cooling thermal protection structure and a construction method thereof, which relate to the technical field of aircraft thermal protection. The phase change sweating cooling thermal protection structure comprises an outer-layer gradient pore sweating carrier, an inner-layer gradient pore sweating carrier, a buffer bin, a pressure bin and a coolant pipeline. The thermal load is distributed on the outer surface of the outer-layer gradient pore sweating carrier, and the thermal load temperature of the first end of the outer-layer gradient pore sweating carrier is higher than that of the second end of the outer-layer gradient pore sweating carrier; the buffer bin is arranged between the outer-layer gradient pore sweating carrier and the inner-layer gradient pore sweating carrier; the pressure bin is arranged on the outer surface of the inner-layer gradient pore sweating carrier; the coolant pipeline is arranged on the pressure bin; and the outer-layer gradient pore sweating carrier and the inner-layer gradient pore sweating carrier control the flow of the coolant according to a thermal load distribution rule. By adopting the method, theproblem that the thermal load distribution is not matched with the actual cooling capacity in the phase change sweating cooling process can be solved.
本发明涉及一种相变发汗冷却热防护结构及其构建方法,涉及飞行器热防护技术领域,包括:外层梯度孔隙发汗载体、内层梯度孔隙发汗载体、缓冲仓、压力仓和冷却剂管道;热负荷分布在外层梯度孔隙发汗载体的外表面上,外层梯度孔隙发汗载体的第一端热负荷温度高于外层梯度孔隙发汗载体的第二端热负荷温度;缓冲仓设置在外层梯度孔隙发汗载体和内层梯度孔隙发汗载体之间;压力仓设置在内层梯度孔隙发汗载体的外表面上;冷却剂管道设置在压力仓上;外层梯度孔隙发汗载体和内层梯度孔隙发汗载体根据热负荷分布规律控制冷却剂的流量。采用本发明可以改善相变发汗冷却过程中热负荷分布与实际冷却量不匹配的问题。
Phase change sweating cooling thermal protection structure and construction method thereof
一种相变发汗冷却热防护结构及其构建方法
2020-10-27
Patent
Electronic Resource
Chinese
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