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设计人员习惯于将气动预示结果同风洞试验数据进行比较,然而对精度如何并没有做出确切地说明。本文提出一个精度准则。该准则根据导弹性能和设计参数,确定要求的预示精度。已选出一些方程,这些方程把上述参数同气动阻力、稳定性和控制系数连系起来。将上述方程对气动系数微分并尽力加以简化后,建立了性能参数或者设计参数的允许误差并计算了要求的气动系数精度。其结果可以定量地计算预示精度。
Designers are accustomed to comparing the aerodynamic predictions with wind tunnel test data, but no precise indication of accuracy is given. This article proposes a precision criterion. The guidelines determine the required accuracy of predictions based on missile performance and design parameters. Some equations have been chosen that relate the above parameters to the aerodynamic drag, stability, and control factor. After differentiating and minimizing the aerodynamic coefficient of the above equation and trying to simplify it, the permissible error of the performance parameter or design parameter is established and the required aerodynamic coefficient accuracy is calculated. As a result, the prediction accuracy can be calculated quantitatively.