The Effect Factors of Projecting Velocity and Projecting Time of Video Scout Projectile

摘要

The paper, for the purpose of studying the relevant factors affecting the projecting velocity and time of video scout projectile, makes an analysis on the stress condition of projecting section of scout equipment, sets up the axial movement differential equation for scout equipment, and analyzes the influences of projectile rotational speed, projecting charge and cabin opening altitude on projecting velocity and time of video scout projectile. Analysis of this paper shows that when choosing the opening-point of video scout projectile, the downward arc stage is a correct choice, when designing the video scout projectile, the projecting charge can be determined the strength and reliability of projecting structure, and the changes in projecting height has little influences on projecting velocity and projecting time. Video scout projectile is carried by shrapnel, rocket projectile and missile, and it is carried to the overhead space of target area and disperses the mission equipment from the projectile body by using the method of opening the cabin in the air, after which, the video scout equipments can stay in the air for a certain amount of time by using the method of rotary reduction and deceleration. During this process, the scout equipment timely transmit the signals it has gathered, which is to be further stored, processed and the target's coordinates can be defined in the ground system. After projectile launching, the projectile is along the conventional uncontrollable trajectory and reaches the overhead space of the target area, and then the scout equipment is shot off from the projectile. The projecting process is crucial to the analysis of trajectory of the scout equipment, since it is the base for correctly analyzing two work stages: deceleration and despinning stage and steady falling stage, while the projecting velocity and time are two important parameters of projecting process. Therefore, by setting up the video scout projectile free-flight section model and scout equipment projecting section trajectory model, the paper analyzes the influences of projectile rotational speed, projecting charge and cabin opening altitude on projecting velocity and time.