High-rigidity transverse folding airfoil

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