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Recent NASA Research on Aerodynamic Modeling of Post-Stall and Spin Dynamics of Large Transport Airplanes

机译:美国宇航局对大型运输机失速和自旋动力学的空气动力学建模的最新研究

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摘要

A simulation study was conducted to investigate aerodynamic modeling methods for prediction of post-stall flight dynamics of large transport airplanes. The research approach involved integrating dynamic wind tunnel data from rotary balance and forced oscillation testing with static wind tunnel data to predict aerodynamic forces and moments during highly dynamic departure and spin motions. Several state-of-the-art aerodynamic modeling methods were evaluated and predicted flight dynamics using these various approaches were compared. Results showed the different modeling methods had varying effects on the predicted flight dynamics and the differences were most significant during uncoordinated maneuvers. Preliminary wind tunnel validation data indicated the potential of the various methods for predicting steady spin motions.
机译:进行了仿真研究,以研究用于预测大型运输机失速飞行动力学的空气动力学建模方法。该研究方法涉及将来自旋转平衡的动态风洞数据和强制风振测试与静态风洞数据进行集成,以预测高动态起飞和旋转运动期间的空气动力和力矩。评估了几种最先进的空气动力学建模方法,并比较了使用这些各种方法预测的飞行动力学。结果表明,不同的建模方法对预测的飞行动力学有不同的影响,并且在非协调机动过程中差异最大。初步的风洞验证数据表明了预测稳定自旋运动的各种方法的潜力。

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