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Method of determining a stiff value of an aerodynamic coefficient
Method of determining a stiff value of an aerodynamic coefficient
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机译:确定空气动力学系数的刚度值的方法
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摘要
Method for determination of a rigid value of an aerodynamic coefficient of an aircraft, in which measurements are made in a wind tunnel on a model of the said aircraft and, on the basis of these measurements, at least one value, known as flexible model value, of this aerodynamic coefficient is determined, characterized in that a rigid value of the aerodynamic coefficient is calculated on the basis of the said flexible model value(s) and a correction taking into account the flexibility of the model. A plurality of flexible model values is determined on the basis of measurements made by varying the parameter q/E and maintaining the angle of incidence at a constant value, and the correction consists in an extrapolation operation providing a value of the aerodynamic coefficient corresponding to q/E=0. As a variant, a single flexible model is determined and the correction consists in adjusting the said value with the aid of a correction factor.
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机译:确定飞机的空气动力学系数的刚性值的方法,其中在风洞中对所述飞机的模型进行测量,并基于这些测量结果,至少一个值被称为柔性模型值确定该空气动力学系数中的,其特征在于,基于所述柔性模型值和考虑模型灵活性的校正来计算空气动力学系数的刚性值。基于通过改变参数q / E并将入射角保持在恒定值而进行的测量,确定多个柔性模型值,并且校正包括外推运算,该外推运算提供与q对应的空气动力学系数的值。 / E = 0。作为变型,确定单个柔性模型,并且校正在于借助于校正因子来调节所述值。
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