基于智能柔性测压带的气动载荷测量方法验证

Verification of a pneumatic load measurement method based on an intelligent flexible pressure measuring tape

  • 摘要: 飞行载荷验证对于飞机设计研制具有重要的意义,为满足新型飞行器试验验证需求,本文通过飞行试验验证需求分析,提出了基于智能柔性测压带的气动载荷测量方法,利用CFD与EFD技术等多种手段进行了测量方法验证,先后完成了风洞常规测压数据验证,通过低速风洞试验对测压带与常规扫描阀测压设备进行对比验证,完成了测压带数据获取,开展了测压带改装外形影响评估。通过对各测压点压力数据及积分结果对比验证,结果表明测压带测量数据真实可信,气动载荷测量误差不超过3.0%,飞行试验表明其可满足飞行试验测试需求,该方法可应用于飞行试验压力分布测量。

     

    Abstract: Flight load verification is of great significance to aircraft design and development. In order to meet the test verification needs of new aircraft, this paper proposes an aerodynamic load measurement method based on an intelligent flexible pressure measuring tape through flight test verification needs analysis. The measurement method is verified by using CFD and EFD technologies and other means. The conventional wind tunnel pressure measurement data verification is completed, and the pressure measuring tape and conventional scanning valve pressure measuring equipment are compared and verified through low-speed wind tunnel tests. The pressure measuring tape data acquisition is completed, and the impact of the modified shape of the pressure measuring tape is evaluated. By comparing and verifying the pressure data and integral results of each pressure measuring point, The results indicate that the data measured by the pressure tapes are authentic and reliable, with the measurement error of aerodynamic load not exceeding 3.0%. The flight test shows that it can meet the test needs of the flight test, and this method can be applied to the pressure distribution measurement of the flight test.

     

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