针对特定机型座舱热载荷实验,提出太阳辐射模拟器光学系统的设计方法,并在此基础上研制出一套太阳辐射模拟器。设计了单只太阳辐射灯,完成了空间灯阵设计。采用提出的预调节方法,获得了合理的单灯安装位置。根据设计方案完成了光学系统的加工和安装,并对其开展了性能测试。结果表明:辐照度分布计算误差为12.0%,证明提出的预调节方法可行;根据预调节方法得到的座舱透明件表面热效应,与设计热效应偏差为-3.1%,说明达到了目标辐照环境;光学系统辐照不稳定度为±0.52%,具有较好的稳定性。研究结果对太阳辐射模拟器的设计具有参考价值。

In this study, we proposed a method to design an optical system for conducting a specific type of aircraft cabin thermal load tests. Thus, a solar radiation simulator was developed. Herein, a single lamp was designed; subsequently, the spatial structure of the lamp was studied. A reasonable installation location for the lamp was ascertained using the pre-adjustment method. Further, the optical system was processed and installed according to the design scheme. Some relative tests were also performed. The results prove that the calculation error associated with the irradiance distribution is 12.0%, demonstrating the feasibility of the proposed method. Furthermore, the deviation between the thermal effects obtained based on the calculation and design value is -3.1%, proving that the system achieves the expected requirements. The temporal instability associated with the irradiance is ±0.52%, and the system exhibits favorable stability. This study is expected to have a considerable reference value with respect to the design of a solar radiation simulator.