Patent ID: 8698059
Filing Date: 2014-04-15
Classification: F42B

Abstract:
1. An air vehicle comprising: a fuselage; and one or more lifting surfaces that deploy from a stowed condition, with the one or more lifting surfaces wrapped around at least part of the fuselage, to a deployed condition; wherein the one or more lifting surfaces each have a top member and a bottom member, with the top member and the bottom member connected at a leading edge and a trailing edge of the lifting surface, and with the top member and the bottom member have a greater physical separation from one another, between the leading edge and the trailing edge, when the lifting surface is in the deployed condition, compared to when the lifting surface is in the stowed condition; further comprising each of the one or more lifting surfaces having stiffeners between the top member and the bottom member; wherein the stiffeners include opposing stiffeners that do not cross a centerline between the top member and the bottom member, when the one or more lifting surfaces are in the deployed condition.