A linear self-locking tail retractable buffer device

Abstract

The invention discloses a linear self-locking retractable tail buffer device, which is composed of an electric actuator, a slideway assembly, a shock absorber and a tail rocker arm; connect. The slideway assembly is arranged at the body tail, and the shock absorber sliding pin slides along the slideway in the slideway assembly. The tail rocker ear piece is connected with the body tail. There is a connecting hole on the tail rocker arm to connect with the shock absorber through the shock absorber connecting pin. When the UAV is launched, the electric actuator pulls the tail of the shock absorber to slide along the slideway, and drives the tail rocker to rotate upwards to reduce the aerodynamic resistance during flight. When the UAV enters the recovery route, the electric actuator pushes the shock absorber to slide backward along the slideway, and the shock absorber drives the tail rocker to rotate downward. When the angle between the axis of the shock absorber and the axis of the chute in the slideway assembly is greater than At 90°, the shock absorber and the rear rocker are in a self-locking state. When landing, the tail rocker arm rotates upwards to compress the shock absorber to realize the function of shock absorption and buffering.

Description

technical field [0001] The invention relates to the technical field of unmanned aerial vehicles, in particular to a linear self-locking tail retractable buffer device. Background technique [0002] The parachute UAV has strong maneuverability, and the recovery site is not restricted by the airport, so it is widely used in the UAV system equipment of various countries. However, the parachute UAV is limited by the steady descent speed of the parachute, and the grounding speed during the recovery process is generally higher than that of the general sliding UAV. Therefore, the landing buffer device of the parachute UAV generally requires a long buffer stroke. [0003] The skid shock absorber is the mainstream grounding buffer device for parachute UAVs at present. It has the characteristics of large buffer stroke, strong ground adaptability, and emergency gliding. Due to its mission requirements, parachute UAVs are often loaded with high-value airborne reconnaissance equipment ...

AI Technical Summary

Problems solved by technology

This type of energy-absorbing material is limited by the structural size of the airframe and the aerodynamic performance of the aircraft, and its buffer stroke is very short

Therefore, the buffering efficiency of the tail of the fuselage is greatly reduced, often causing recovery accidents such as tearing of the tail shell of the aircraft, touching the ground of the tail propeller, and touching the ground of the tail brace and vertical tail.

Serious impact on equipment lifespan and uptime

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