GB572406A - Improvements in aeroplanes - Google Patents

Abstract

572,406. Aircraft structures. AEROPLANES MORANE-SAULNIER, SOC. ANON. DE CONSTRUCTIONS AERONAUTIQUES. Jan. 29, 1940, No. 1805. Convention date, June 9, 1939. [Class 4] An aeroplane provided with a wing or wing centre portion extending in a continuous manner from one side to the other of the fore- and-aft plane of symmetry, is characterised by the fact that the wing or wing centre portion is constituted by a homogeneous box-like structure forming a fuel tank, the wall of which is made solely of sheet metal or the like uniformly distributed over the periphery of the box-like structure, at least one part of said wall forming a stressed skin for the wing, which includes no spar members exterior to the skin of the boxlike structure. The centre section comprises an upper and a lower stressed skin which may be braced by members e and bulkheads B, C and strengthened by stringers f. The stringers f may have perforations so as not to reduce the tank capacity. The forward and rear portions of the wing may accommodate slotmechanism and landing flap gear or the whole interior of the wing section may be used as a tank. The central section has T-shaped members r, Fig. 10, secured to it for the attachment of the fuselage c, and end sections b of the wings are secured to L-shaped members s at the ends of the central section. Parts or the whole of the end sections also may serve as tanks. Instead of the central section extending through the fuselage it may be attached thereto above or below the fuselage. A single engine may be used or two nacelles may be mounted, one at each end of the central section.