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Flight Test Techniques for Quantifying Pitch Rate and Angle of Attack Rate Dependencies

机译:用于量化俯仰率和迎角速率相关性角度的飞行测试技术

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Three different types of maneuvers were designed to separately quantify pitch rate and angle of attack rate contributions to the nondimensional aerodynamic pitching moment coefficient. These maneuvers combined pilot inputs and automatic multisine excitations, and were demonstrated with the subscale T-2 and Bat-4 airplanes using the NASA AirSTAR flight test facility. Stability and control derivatives, in particular C_(mq), and C_(mα), were accurately estimated from the flight test data. These maneuvers can be performed with many types of aircraft, and the results can be used to improve physical insight into the flight dynamics, facilitate more accurate comparisons with wind tunnel experiments or numerical investigations, and increase simulation prediction fidelity.
机译:设计了三种不同类型的操纵,以分别量化俯仰率和攻角对无量纲气动俯仰力矩系数的贡献。这些演习结合了飞行员的输入和自动多正弦激励,并使用NASA AirSTAR飞行测试设备在T-2和Bat-4小型飞机上进行了演示。从飞行测试数据中可以准确地估算出稳定性和控制导数,尤其是C_(mq)和C_(mα)。这些操作可以用多种类型的飞机执行,其结果可用于改善对飞行动力学的物理洞察力,有助于与风洞实验或数值研究进行更准确的比较,并提高模拟预测的逼真度。

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