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在FL-23风洞中开展了80°/65°双三角翼大迎角下的滚转特性研究,包括静态测力试验,动导数试验和自由滚转试验,通过静态测力试验及动导数试验获得了双三角翼模型在大迎角条件下的滚转力矩特性以及动导数特性,从而对双三角翼大迎角条件下的滚转运动特性进行了预测,最后通过自由摇滚试验对预测结果进行了验证。研究结果表明随着模型迎角的增加,双三角翼呈现不同的滚转运动形态,包括静态稳定、双周期震荡、准极限环摇滚,通过静态气动力及动导数可以较准确地对模型的运动形态及对应的迎角范围进行预测。
In the FL-23 wind tunnel, the roll characteristics of 80 ° / 65 ° dual-delta wing at high angle of attack were studied, including static force test, dynamic derivative test and free roll test. Through static force test and dynamic derivative The rolling torque characteristics and dynamic derivatives of the double-delta wing model under high angle of attack were obtained. The rolling characteristics of the double delta wing at high angle of attack were predicted. Finally, the free rock test was used to predict the prediction results Verified. The results show that with the increase of the angle of attack of the model, the dual delta wings show different modes of roll motion, including static stability, double-cycle oscillation and quasi-limit ring rock. The static aerodynamics and dynamic derivatives can accurately model the motion of the model Shape and the corresponding angle of attack range prediction.