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High aspect ratio: long and slender wing. More efficient aerodynamically, having less induced drag at subsonic speeds. They tend to be used by high-altitude subsonic aircraft such as the Lockheed U-2 spy plane and by high-performance sailplanes such as the Glaser-Dirks DG-500.
The natural outcome of this requirement is a wing design that is thin and wide, which has a low thickness-to-chord ratio. At lower speeds, undesirable parasitic drag is largely a function of the total surface area, which suggests using a wing with minimum chord, leading to the high aspect ratios seen on light aircraft and regional airliners ...
The Windward Performance Perlan 2 (English: Pearl) is an American mid-wing, two-seats-in-tandem, pressurized, experimental research glider that was designed by Greg Cole and built by Windward Performance for the Perlan Project. [2] The aircraft first flew on 23 September 2015 at Redmond Municipal Airport, Oregon. [1]
An ASH 31 glider with very high aspect ratio (AR=33.5) and lift-to-drag ratio (L/D=56) In aeronautics, the aspect ratio of a wing is the ratio of its span to its mean chord. It is equal to the square of the wingspan divided by the wing area. Thus, a long, narrow wing has a high aspect ratio, whereas a short, wide wing has a low aspect ratio. [1]
An early version of the Edge 540 with a wire-braced tail. The Zivko Edge 540 manufactured by Zivko Aeronautics is a highly aerobatic aircraft.Capable of a 420 degree per second roll rate and a 3,700 foot per minute climb rate, it has been flown to victory on the international Unlimited aerobatics circuit several times since the mid-1990s.
A leading-edge cuff is a fixed aerodynamic wing device employed on fixed-wing aircraft to improve the stall and spin characteristics. Cuffs may be either factory-designed or an after-market add-on modification. [1] A leading-edge cuff is a wing leading-edge modification, usually a lightly drooped outboard leading-edge extension. In most cases ...
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[1] [2] The Blaicher B.1 had a two-part, twin spar wing of rectangular plan out to angular tips. It was plywood-covered from the forward spar around the leading edge, forming a D-box. Behind, the wing was fabric covered. It was mounted centrally on a raised, streamlined pedestal which extended aft of the wing, dropping in height, to the tail.