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针对NMOHEMS现场探测单元无人机运载的运作机制,需求一种小型化,易于自动控制的投放系统。基于系统对安全性和可靠性的要求,探索使用压缩空气弹射现场探测单元,压力筒内空气的压力Px,现场探测单元的质量M与现场探测单元出口处速度v之间的关系成为研究的核心问题。建立了机载单元水平弹射和垂直弹射的数学模型,并对该模型进行了仿真计算。研制了压力筒的样机模型和自动控制系统,实施了现场探测单元水平弹射的外场实验,获得了实验数据。研究结果表明:仿真结果与实验数据一致,对系统的优化具有很好的指导意义,此种方法可以满足机载和弹射的需求,提供了一种现场探测单元安全投放的新方法。
In view of the operating mechanism of the NMOHEMS on-site exploration unit UAV, there is a need for a miniaturized and easy-to-use automatic delivery system. Based on the requirements of safety and reliability of the system, the paper explores the relationship between the pressure Px of the air in the pressure cylinder and the mass M of the on-site detection unit and the velocity v at the exit of the field detection unit, which is the core of the research problem. The mathematical model of horizontal ejection and vertical ejection of airborne units is established and the model is simulated. The prototype of the pressure cylinder and the automatic control system were developed. Field experiments of horizontal ejection of the detection unit were carried out and the experimental data were obtained. The results show that the simulation results are consistent with the experimental data, which has good guiding significance for the system optimization. This method can meet the requirements of airborne and catapult, and provides a new method for safe deployment of on-site detection units.