GB601118A - An improved aircraft - Google Patents

Abstract

601,118. Tandem-wing aircraft. BLACKBURN AIRCRAFT, Ltd., CAMPBELL, T. C., and HALL, E. V. Dec. 6, 1944, No. 24373. [Class 4] In a multi-engined tandem-wing aircraft, particularly a flying boat, having a main rear wing 3 and a smaller leading wing 2, flaps 6, 6<SP>1</SP> on the leading wing and flaps 7, 7<SP>1</SP> on the main wing are interconnected for simultaneous actuation ; propellers 5 are located between the wings and nearer the trailing edge of the leading wing than the leading edge of the main wing so as to induce a slipstream effect on both wings ; and the span of flaps 7, 7<SP>1</SP> traversed by the slipstream is equal to the span of flaps 6, 6<SP>1</SP> or the length thereof over which slipstream effect is induced. As shown, applied to a flying boat having an even number of high horse-power engines carried in nacelles 4 on the wing 3, the flaps 6, 6<SP>1</SP> have elevators 10, 10<SP>1</SP> hinged at their trailing edges ; ailerons 8, 8<SP>1</SP> and fixed leading edge slots 9, 9<SP>1</SP> are provided on the wing 3 outside the slipstream area ; and a fin and rudder 11 are located at the rear of the hull 1 close to the wing root as shown or on a rearward extension of the upper part of the hull.