为了解航空发动机和燃气轮机内的流场特征，从而有针对性的开展优化设计提高其性能，需要对航空发动机和燃气轮机的流场进行准确测量。五孔探针是一种应用较为广泛的流场测量手段，采用五孔探针能够较为准确的获得所测流场的总压、静压、速度大小和方向等流场参数。五孔探针性能的优劣直接影响测量结果的准确性，而五孔探针的性能又直接与五孔探针的探头形状相关。本文采用试验的研究方法对五孔探针探头的形状对其性能的影响进行了较为详细的分析。分析结果显示：半球形探头在亚音速条件下无论是方向校准系数还是压力校准系数都较锥形探头的校准系数分布均匀，采用半球形探头的五孔探针测量流场时的测量结果更为准确。

In order to understand the characteristics of the flow field in aero-engines and gas turbines, so as to carry out targeted optimization designs to improve their performance, it is necessary to accurately measure the flow fields of aero-engines and gas turbines. Five-hole probe is a widely used flow field measurement method, which can accurately obtain the flow field parameters such as total pressure, static pressure, velocity. The performance of the five-hole probe directly af-fects the accuracy of the measurement results, and the performance of the five-hole probe is directly related to the shape of the probe. In this paper, the influence of the shape of five-hole probe on its performance is analyzed in detail by experi-mental method. The results show that the spherical probe has a more uniform distribution in both direction and pressure calibration coefficients than the conical probe, and the measurement results are more accurate when using the five-hole probe of the spherical probe.