High-rigidity transverse folding airfoil

Abstract

The invention provides a high-rigidity transverse folding airfoil which comprises an outer wing and an inner wing, wherein the outer wing is capable of rotating relative to the inner wing through a rotating shaft; a power device used for driving the outer wing to rotate is mounted in the rotating shaft; and a locking device used for limiting the rotation of the outer wing is mounted in the outer wing or the inner wing. According to the high-rigidity transverse folding airfoil provided by the invention, a titanium alloy framework added with skin is adopted as an airfoil structure, so that the structural weight can be reduced when the airfoil rigidity is guaranteed; serving as a main connecting part between the outer wing and the inner ring, the rotating shaft transfers and bears the load from the outer ring; a torsion bar is adopted as an unfolding power source, the occupied space of the torsion bar is small, and the unfolding mode is simple and reliable; double locking pins are adoptedas locking components of a locking mechanism, compression springs are adopted as power sources, the locking pins are designed to be conical cylinders, and the property of rigidity after locking is good; when the folding function of the high-rigidity transverse folding airfoil is achieved, the high-rigidity transverse folding airfoil is higher in rigidity and stronger in flutter-resistant capability; and the higher flying speed can be achieved.

Description

technical field [0001] The invention relates to a high-rigidity transverse folding airfoil. Background technique [0002] The folded airfoil reduces the lateral size of the projectile before launch, which is convenient for barrel-type shipment and launch. With the increase in the demand for projectiles, the folding airfoil is required to have higher stiffness, so as to improve the anti-flutter ability and control accuracy of the folding airfoil. High rigidity folding airfoil is the development direction of projectiles. [0003] Folding wings mostly adopt the active horizontal folding form. This structural form is at the root or middle of the wing surface, and the wing surface is divided into outer wing and inner wing along the chord direction of the wing surface. Powered by a torsion spring mounted inside the airfoil. In order to reduce the structural size of the deployment mechanism and ensure the aerodynamic shape of the airfoil, the moment of inertia of the outer wing ...

AI Technical Summary

Problems solved by technology

Since there is only a single set of locking mechanism and connecting mechanism, the rigidity after locking is low

In order to ensure the success rate of locking and the rigidity after locking, the locking mechanism is relatively large, resulting in a thicker wing surface, which affects the aerodynamic performance

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