飞机偏航_滚转耦合运动非定常空气动力实验.pdfVIP

374 V ol . 37 N o. 4 20058 Journal of N anjing U niversit y of A eronautics A st ronautics A ug . 2005 - 黄　达 吴根兴 ( 2 10016) : 在3 m 低速风洞中设计制造了一套动态实验系统 不仅能模拟飞机单自由度机动飞行 动 还能实现模型 绕体轴的偏航-滚转耦合 动。通过选择 动参数 可实现绕两 个轴 动角速度之间的匹配 满足飞机典型机动 飞行所需的绕速度轴的无侧滑偏航-滚转 动。试验测量了 -1飞机模型在不同迎角下单独滚转、单独偏航和偏 BJ 航-滚转耦合 动时的非定常气动特性。结果表明 飞机机动飞行时多自由度 动的气动特性比单自由度 动气 动特性复杂 耦合 动时的气动特性与两 个单自由度 动的气动特性的叠加结果相比有很大差别。 : 偏航振动; 滚转振动; 大振幅; 非定常实验; 风洞实验设备 : V 2 11. 74: A : 1005-2615( 2005) 04-040 8-04 Experiment on Fighter Oscillating in Large Amplitude Yaw-Roll Motion - H UA N G D a W U Gen x ing ( College of A erosp ace Engineering N anjing U niversity of A er onautics A stronautics N anjing 210016 China) : 3 Abstract A set of new t est apparat us used t o measure unst eady aerodynam ic ch aract eristics w as m ade in a m low sp eed w ind tunnel at N anjing U niv ersit y of A eronaut ics A stronautics. T he test apparat us can be used t o conduct the test of model oscillating in large amplit ude p it ch yaw or roll and t he t est of model oscillat ing in large amplitu de p it ch -roll or y aw -roll around t heir body-axis. T his apparat us can also condu ct - . the m odel motion around the velocity ax is by adjusting the m ot ion parameters of t he model T he unst eady aerodynam ic ch aract eristics of t he f ig ht er model of BJ-1 are measured when it oscillat es in roll yaw or yaw - roll. Resu