气压高度试验方法研究

Investigation of test method for air pressure height system

介绍了利用模型表面的压力测量值经计算求出来流静压的方法和试验结果。文中涉及的计算方法为多元回归法,对试验所得压力数据进行处理,可拟合出多个不同参变量下的静压P∞的多元方程,从中选取一组较精确的作为计算公式进行验证试验,结果表明采用该方法测量静压具有较高的精度。

This paper presents test results and the computation method to get local static pressure by measuring the pressure on the surface of model. The method involved in this report is a multi-element regression method. The multi-element equations about static pressure P_∞ are given with many different variables after transacting pressure test data. A more precise suit is chosen from these equations as compute formula and is validated by test. The test result shows that it is very precise for using multi- element regression method to measure pressure.