Launching type coaxial unmanned helicopter rotor folding and unfolding system

Abstract

The invention discloses a launching type coaxial unmanned helicopter rotor folding and unfolding system. The system comprises a helicopter body, a rotor hub and rotor blades and further comprises a rotor folding and unfolding mechanical structure and a parachute opening and throwing mechanical structure. The rotor folding and unfolding mechanical structure comprises rotor folding hinges, limitingropes and an unfolding steering engine, the rotor folding hinges are hinges with elastic pieces, the limiting ropes are wound round the outer portion of the helicopter body, and the unfolding steeringengine is located in the helicopter body. The parachute opening and throwing mechanical structure comprises a parachute pack, a parachute pack cover, a parachute pack cover steering engine, a parachute and a parachute rope steering engine. The problems that a fixed wing launching type unmanned aerial vehicle cannot hover, and fixed point investigation and attack cannot be achieved are solved, theproblem that a launching type coaxial unmanned helicopter rotor interferes in launching equipment is solved, and the problem that the launching type unmanned helicopter parachute opening and throwingimplementation difficulty is large is solved.

Description

technical field [0001] The invention relates to the technical field of aircraft design, more specifically, to a drop-in coaxial unmanned helicopter rotor folding and unfolding system. Background technique [0002] The drop-type coaxial unmanned helicopter is derived from the fixed-wing unmanned aerial vehicle of the hand-throwing type and slide rail ejection. Since the 1990s, the United States, the United Kingdom, Russia and Israel have carried out a lot of research work in the field of drop-type UAVs, applying a variety of weapon systems involving the land, sea and air forces, including reconnaissance and attack types. kind. Drop-in UAVs are widely used in the military field. They combine ammunition technology with UAV technology, and then launch them through shell launchers or aircraft. After reaching the approximate target area, they accurately cruise and locate the target point by UAV, and then complete the project. Task. [0003] Drop-off UAVs are mainly divided into...

AI Technical Summary

Problems solved by technology

[0006] Most of the current delivery drones adopt the fixed-wing form, because they cannot hover and cannot realize fixed-point detection and strike; and delivery unmanned helicopters are easy to interfere with the delivery facilities due to the large size of the rotor blades; and the existing delivery The unmanned helicopter also has the problem of difficulty in implementing parachute opening and parachute throwing.

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