The swept wing aeroplane—á lá 1912 - Travel for Aircraft

Travel for Aircraft
By joseph_may
on March 12, 2021 at 10:00 PM
JW Dunne D.8 model in the London Science Museum—©2018 Joseph May/Slipstream Photography
J.W. Dunne designed a highly stable aircraft during a time when aircraft and stability were not terms normally used in the same breath. Dunne originally worked at Great Britain’s Army Balloon Factory (precursor to Farnborough—England’s center of aviation science and engineering). Forming the Blair Atholl Aeroplane Syndicate, Dunne began aircraft design in earnest. Ultimately creating the D.8 for stability in flight. A wing swept of 32° made it distinct as well as eliminating the requirement (and weight) of a tail structure. Wing camber increased away from the fuselage while incidence decreased with the wingtips washing out. Distance between the wings also reduced outboard. This was not a simple box kite-like design with its subtle though effective aerodynamic design details yielding excellent longitudinal stability. Power to drive the propeller was originally produced by a direct drive 4-cylinder 60 hp water cooled engine manufactured by the Green Engine Co. Subsequently, the Gnome rotary engine replaced the Green while providing 20 additional hp. This model is displayed in the London Science Museum which has a compete aviation museum unto itself.

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