boofhead
Without wishing to contribute to further the thread drift initiated by the booted troll, the aileron drag problem was largely overcome by Arthur Hagg in the form of differential ailerons , first used on the De Havilland D.H. 29 Doncaster of 1921. This aircraft was a cantilever monoplane long range transport .
Patent 184,317, of 13 June 1921 in his name, described a simple acute-angle bell-crank arrangement "so that for a given movement of the pilot's control lever the upwardly moving aileron is displaced through a greater angle than the downwardly moving aileron".
This resulted in the drag of the upturned aileron outweighing the other and assisting , instead of counteracting the turn as had been the inherent lateral secondary effect control problem ( warping and ailerons) from the Wrights onward.
Leslie Frise very soon after in patent 194,753 added his ingenious aileron design , which is still widely used, often in association with Hagg's contribution.
(In point of fact Frederick Handley Page had already patented the slotted aileron which also well counteracted aileron drag, but this wasn't taken up with such alacrity initially.)
Last edited by Haraka; 3rd Jul 2015 at 07:47.