Centroid-variable airbag buffer landing method for small flying-wing unmanned aerial vehicle

Abstract

The invention discloses a centroid-variable airbag buffer landing method for a small flying-wing unmanned aerial vehicle, the advantage of large wing area of the flying-wing unmanned aerial vehicle isfully utilized, and in the free falling process, a wing surface forms a resistance surface, so that the vertical falling speed of the unmanned aerial vehicle can be effectively reduced; compared witha parachute, the resistance characteristic is small, the falling speed is moderate, and the problem that the falling speed is low and drifts along with wind is solved; through gradual deceleration inthree stages of deep stall deceleration, vertical descending airfoil resistance deceleration and grounding airbag deceleration, the deceleration load is reduced, and the integrity of the unmanned aerial vehicle body and the load is effectively ensured.

Description

technical field [0001] The invention belongs to the technical field of unmanned aerial vehicle landing, and in particular relates to a method for cushioning landing of a small-sized flying-wing unmanned aerial vehicle with a metamorphic core airbag. Background technique [0002] Small fixed-wing UAVs have the advantages of fast flight speed and long time in the air, and have been widely used in various civil aerial surveys and military reconnaissance. In the design of small UAVs, the way of landing and recovery is the key link in the design of UAVs. At present, small fixed-wing UAVs generally use the methods of hitting the ground, sliding, hitting the net, hitting ropes, parachuting, and "parachuting + airbag cushioning". "And other ways to recycle, but each way has its own limitations. For small unmanned aerial vehicles, sliding, hitting the net, and hitting the rope require certain venues and equipment support, which limits its application scenarios; the parachute landing...

AI Technical Summary

Problems solved by technology

Compared with traditional layout UAVs, flying-wing UAVs also have disadvantages such as poor take-off and landing performance and weak structural bearing capacity. Generally, parachuting methods are mainly used to land, and there are still large errors in landing positions, damage to the residual speed of landing, and parachute installation. The umbrella process is more complicated, etc.

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