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基于CFD计算得到的流场、温度场结果和Modtran计算得到了环境辐射数据,建立了典型背景下的飞行器红外辐射特征计算模型。计算中考虑了波段、季节、发射率和双向反射函数等因素。通过地面试验数据,对计算方法进行了验证,计算值与试验数据吻合较好。该模型为更准确地分析飞行器的红外辐射特征,以及更合理地评价红外抑制措施的抑制效果提供了方法和工具。
Based on the CFD calculated flow field, temperature field results and Modtran calculation, the radiation data of the environment were obtained, and the calculation model of the infrared radiation characteristics of the aircraft under a typical background was established. The band, season, emissivity and bi-directional reflection function are all considered in the calculation. Through the ground test data, the calculation method is verified, the calculated value is in good agreement with the experimental data. The model provides a method and a tool for more accurate analysis of the infrared radiation characteristics of an aircraft and a more reasonable evaluation of the suppression effect of infrared suppression measures.