机载红外诱饵运动特性仿真技术研究

飞机及其投射红外诱饵飞行轨迹模型是红外对抗评估数字仿真和半实物仿真的一个重要环节.文章分析了目标飞机及其投射红外诱饵的运动特性,建立了目标飞机运动模型及其各种典型机动方式的模型;并建立了红外诱饵的运动模型,所建红外诱饵模型综合考虑了红外诱饵在飞行过程中所受到的空气阻力和重力、诱饵的质量变化、诱饵投射的初速、诱饵投射的方位、投射诱饵时载机的位置与速度等因素.使用经典的四阶龙枷库塔方法对上述模型的运动方程进行求解,利用VC编制了栽机投射红外诱饵的运动仿真软件,该仿真软件能够实现目标飞机在各种机动方式下投射红外诱饵,投射时间、投射数量、投射方位、投射速度都可以由用户进行设定,最后给出了几组典型的仿真结果.

Kinetic Simulation of the Characteristics of Airborne Infrared Flares

Infrared flares can be identified by infrared air-to-air missile because they have different tracks compared with the aircraft.The precise kinetic models of aircraft and infrared flares were needed in the performance evaluation of infrared missiles and infrared flares.In this paper,kinetic and maneuverability models of infrared flares were first built.The models take into account the gravity,the atmospheric resistance and the mass of infrared flares.The influence of the decreasing mass of the infrared flares during the burning process is also taken into account in the models of infrared flares.In addition,it is generally assumed that an aircraft is in a straight-line flight when it dispenses infrared flares.However,in actual air combat,the infrared flares were dispensed by the aircraft during the process of maneuvering.Therefore,in the models of the aircraft diversified aircraft maneuvers are considered,such as spiral maneuver,snake maneuver,escape maneuver,etc.According to these models,we developed a simulation software using VC.The software can simulate a variety of flying scenarios by setting the parameters,such as quantity,interval,azimuth and velocity of infrared flares,and aircraft maneuvers.The simulation scenarios thus generated have high credibility.