Self-hardening device for flexible wings of UAV

Abstract

The invention relates to a flexible wing self-hardening device for an unmanned aerial vehicle. The device includes a gas generator, a Venturi tube, a check valve, a polyurethane foaming material, an intermediate and a flexible wing. The front end of the Venturi tube is connected to the gas generator through screw threads, and the rear end of the Venturi tube is connected to the front end of the check valve through screw threads. The rear part of the check valve is connected to the intermediate through screw threads. The polyurethane foaming material is connected to the Venturi tube through pipes. Strength and rigidity of the flexible wing are improved by the device. A small storage space advantage of the flexible wing and a good pneumatic performance advantage of a rigid wing are fully exerted, thus meeting requirements on long-endurance flight of unmanned aerial vehicles.

Description

technical field [0001] The invention relates to a self-hardening device for a flexible wing of an unmanned aerial vehicle, in particular to a self-hardening device for a flexible wing, which belongs to the field of new concept equipment. Background technique [0002] The tube-launched UAV is a new type of equipment that is launched by a launch tube, quickly deployed to the target area, and cruises over the target area to perform reconnaissance missions. [0003] The flexible wing of the tube-type launching UAV usually adopts two schemes: rigid wing or flexible wing. The rigid folding wing is unfolded through mechanical unlocking and linkage mechanism, which has the advantages of strong rigidity, reliable action, and simple control. Folding wings occupy a relatively large space in the missile body, and UAV folding wings often use thin airfoils for aerodynamic performance considerations, so problems such as stiffness and flutter are more prominent. Flexible wings can better s...

AI Technical Summary

Problems solved by technology

However, its shortcomings are also obvious, such as easy air leakage, poor aerodynamic performance, aspect ratio is limited by the load of the flexible wing, and the technical difficulty of the inflation system is relatively large.

[0004] At present, the rigid elastic wing has low lift-to-drag ratio, poor overload resistance, and is not easy to fold and unfold in a limited space. The inflatable flexible elastic wing and its hardening device solve the technical problem of reliable folding and storage of the elastic wing and a certain rigidity after deployment.

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