摘要
为了准确评价飞机滚转性能,提出了一种基于试飞数据的滚转模态特性计算方法。首先,通过对比仿真输出和试飞数据,证明了横航向控制律和滚转响应与设计状态的一致性;然后,在频域内采用低阶等效系统得到与真实系统性能一致的数字仿真系统滚转性能指标,从而获得真实系统的滚转性能指标;最后,建立滚转运动数学模型,讨论影响滚转特性的因素并进行优化完善。仿真结果证明,该方法所得结果准确、可靠、有效,可用于型号试飞数据处理。
A calculation method of roll mode performance based on flight data was proposed to evaluate exactly roll flight performance. Firstly, the consistency of control laws, roll response and the desiged control laws were demonstrated by comparing simulation results with flight data. Secondly, the roll performance the same as the real system were adopted to achieve the roll performance of the real flight system with the low order equivalent systems. At last, mathematical model of rolling motion was set, the factors which affect the roll performance were discussed, and roll model was optimized. Simulation results show that the results obtained by the method are correct, valid and reliable, and the method can be used to process flight data.
出处
《飞行力学》
CSCD
北大核心
2014年第6期553-556,共4页
Flight Dynamics
关键词
滚转特性
数据处理
数学模型
数字仿真
roll characteristic
data processing
mathematical mode
digital simulation
