湍流控制屏（TCS）是航空发动机风扇噪声试验必备的试验设施。由于湍流控制屏的作用，风扇前传噪声向远场传播时会产生传递损失。通过对湍流控制屏的声学校准，可以获取湍流控制屏的声学修正量，从而实现对风扇前传噪声的修正。本文结合实际工程应用条件，分析了湍流控制屏重复安装的位置精度、校准声源重复性、稳定性、校准声源位置偏差、温湿度修正等因素对湍流控制屏声学修正量精度的影响；结合上述影响因素，对湍流控制屏160 Hz~40 kHz的声学修正量的特征进行分析，总结工程应用中湍流控制屏高精度声学校准的注意事项，提出湍流控制屏的声学校准应包含测量不确定度。
The Turbulence Control Screen (TCS), being a necessary facility for acoustic testing of fans, will cause transmission loss when the noise propagates to the far field. The noise can be corrected through calibration of TCS. Based on practical engineering application conditions, this paper examines factors influencing the calibration, such as acoustic source deviation and temperature and humidity modifications. According to the above factors, characteristics of TCS calibration from 160 Hz to 40 kHz are analyzed, announcements in practical engineering applications summarized, and the uncertainty of TCS calibration presented.
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