摘要
针对火箭助推器对无人机发射的影响,对某型无人机发射过程中机体受到的外力和外力矩进行了理论分析和计算,重点研究了火箭助推器脱落瞬间机体的受力情况.在此基础上,建立了该型无人机起飞发射段数学模型,将其成功应用于基于Matlab/Simulink环境的发射段数字仿真系统,并进行了数字仿真.仿真结果表明:仿真中无人机的高度、速度和俯仰角等飞行参数的曲线均与试飞数据基本一致,所建立模型准确、可信;无人机起飞阶段舵面效率较低,必须调整好火箭助推器的安装角度,无人机才能成功发射.该模型可用于发射段控制方案的设计,为保证无人机发射试验成功提供参考数据.
To ascertain the influence of rocket booster on the unmanned aerial vehicle ( UAV ) launching,different contributions to the external forces and moments acting upon the rigid body are theoretically analyzed and computed. The external forces and moments at the moment of rocket booster falling off were studied in particular. On the basis of theoretical analysis,the dynamic model was built and used in the digital simulation system of this launching process constructed under the Matlab/Simulink environment. The simulation results show that flight parameter curves in the simulation are basically identical with the records in real flight. The model built is accurate and credible. The rudder effectiveness of UAV is low in the process of takeoff,therefore,it cannot be launched successfully unless the installation angle of the rocket booster is appropriate. The model can be used for the design of control strategy and provide references for successful launching test of UAV.
出处
《东南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2010年第S1期136-139,共4页
Journal of Southeast University：Natural Science Edition
关键词
无人机
火箭助推发射
数字仿真
建模
unmanned aerial vehicle
rocket booster launching
digital simulation
modeling
