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飞机的大气传感器是获得飞机外部大气参数的重要的测量仪器,如果大气传感器自身精度不够,或者由于布置不合理引起的误差,就会引起飞行危险。为了验证气动设计的布局方案,选出传感器位置比较优化的方案,得到机头静压值随迎角变化不变的区域,同时总结出民机大气数据传感器布局设计验证的风洞试验方法。通过低速测压风洞试验和缩比传感器(风标和七孔探针),测量得到大气传感器不同布局位置的气动特性。结果表明:大气传感器的布局位置对测量结果影响相当重要;试验结果与计算结果符合良好,满足气动设计要求。
Airplane air sensors are important measuring instruments for obtaining the external atmospheric parameters of aircraft. If the accuracy of atmospheric sensors is not enough, or because of errors caused by improper layout, it will cause flight danger. In order to validate the layout scheme of aerodynamic design, a more optimized scheme of sensor position was selected to obtain the area where the static pressure of head varied with the angle of attack, and the wind tunnel test method for the design verification of the air data sensor layout of civil aircraft was summarized. The aerodynamic characteristics of different locations of the atmospheric sensors are measured through low-pressure manometry wind tunnel tests and down-scaling sensors (weathercock and seven-hole probe). The results show that the location of the atmospheric sensor is very important to the measurement results. The experimental results and the calculated results are in good agreement with the aerodynamic design requirements.