摘要
阐明了转弯飞行是直升机的基本机动科目,现有的运动学问题研究仅从性能的角度出发,分析转弯过程中的过载、转弯半径等,忽略了转弯过程中的迎角、侧滑角、姿态和角速度等运动参数的变化,因而不能合理地预测转弯过程中旋翼的真实能力、直升机的机动性能及飞行轨迹.文中着重介绍了一种直升机稳定转弯时的运动学分析方法,该方法建立了不同稳定转弯条件下,速度、迎角、侧滑角与过载系数、姿态、角速度之间的关系,定量分析了不同稳定转弯条件对直升机角速度和姿态的影响.
Turn is the basic maneuver element of helicopters. The existing method studying the turn kinematic characteristic is only from the point of performance to analyze the load factor, turn radius and ignoring the variations of attack angle, sideslip angle, angular velocities and helicopter attitudes during the turn maneuver. As a result, the reliable prediction of the rotor thrust limits, aircraft performance as well as the accurate simulation of the trajectory are lost. A method is proposed in this paper to analyze the kinematic characteristic of helicopter during the steady turn flight. The relationship between velocities, attack angle, sideslip angle, load factor, angular velocities and attitudes is established for different turn conditions. The effects of steady turn conditions on the aircraft angular velocities and attitudes are analyzed.
出处
《海军航空工程学院学报》
2006年第2期234-236,240,共4页
Journal of Naval Aeronautical and Astronautical University
