空投时运输机的实时仿真平台

A Real-Time Simulation Platform for Airdrop of the Transport Aircrafts

建立了涵盖刚体货物、牵引伞、舱内地板角等影响因素的复杂空投过程运动学模型,提出了空投系统牵引伞力作用方向,推导了空投货物与载机相互作用力大小及作用点,设计了0-1控制变量对货物在空投的不同阶段进行分时控制,简化了建模过程,使模型具备不同空投模式下的仿真能力,在此基础上设计了集空投系统设置、仿真、分析与显示为一体的实时仿真平台,最后通过仿真对该模型与传统空投模型之间的动态响应误差进行了量化分析。

In order to establish a more realistic airdrop kinematics model, the drag direction was presented and the interaction force between cargo and airplane were deduced. Many influence factors such as rigid body good, extraction parachute and the angle of cabin floor were considered in the model. The 0-1 control variables were designed for time-shared control of the cargo at different airdrop phases. The modeling process was simplified, which could simulate the different airdrop modes. A simulation platform for cargo airdrop system was designed, which integrated such functions as airdrop parameter setting, simulation, analysis and display. At last, a quantitative analysis was made to the dynamics response error of the proposed mathematical model and the tradition model through simulation.