Automatic flameout system of unmanned helicopter after landing

Abstract

The invention relates to an automatic flameout system of an unmanned helicopter after landing, belonging to the technical field of unmanned aerial vehicles. The automatic flameout system of the unmanned helicopter after landing is characterized in that the system comprises pressing contact switches, a safety switch, an insulating strip and a weight, wherein the safety switch consists of a base and two metal reeds, the pressing contact switches are used for detecting the landing state of the unmanned helicopter and comprise a left front side pressing contact switch, a left rear side pressing contact switch, a right front side pressing contact switch and a right rear side pressing contact switch, and after the pressing contact switches are connected in series, in parallel or in series parallel, the pressing contact switches are connected with the safety switch and an engine flameout line; when the unmanned helicopter takes off, the insulating strip is drawn out by the weight from the safety switch, the safety switch is turned on, the pressing contact switches are turned off and the system is started; and when the unmanned helicopter is landed, the pressing contact switches are pressed and are turned on, and an engine is flamed out immediately because the entire flameout line is short-circuited to the ground. The automatic flameout system of the unmanned helicopter after landing simultaneously considers the engine ground startup, the air flight and the landing of the unmanned helicopter and can simply and reliably realize the automatic flameout of the unmanned helicopter after landing.

Description

technical field [0001] The invention is an automatic flame-out device for unmanned helicopter landing, which can safely and reliably extinguish the engine when the helicopter is landing. It is mainly used in technical fields such as aerospace, drones and robots. Background technique [0002] The engine of an unmanned helicopter is the source of power for flight. While it has energy, it is also potentially dangerous. After the unmanned helicopter lands, the engine should be turned off as soon as possible to avoid possible accidents. In the past, there were mainly two types of engine flameouts for unmanned helicopters, manual flameout and automatic flameout. [0003] The way of artificial flameout is that the operator controls the engine flameout through the remote control. The manual flameout method requires the operator to pay close attention to the landing of the helicopter and reduce the degree of automation of the unmanned helicopter that lands autonomously; the automa...

AI Technical Summary

Problems solved by technology

However, due to the high-voltage electromagnetic signal contained in the engine flameout line

If the flight control computer directly controls the engine flameout line, it will introduce the electromagnetic pulse of the engine, and may cause the flight control computer to fail due to severe disturbance

In addition, since this method is software-hardware coordinated control, the probability of failure is high

If there is a misfire during the flight of the unmanned helicopter, the unmanned helicopter will quickly crash due to loss of power

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