Search results
Results from the WOW.Com Content Network
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]
Low aspect ratio: short and stubby wing. Structurally efficient, high instantaneous roll rate, low supersonic drag. Structurally efficient, high instantaneous roll rate, low supersonic drag. They tend to be used on fighter aircraft, such as the Lockheed F-104 Starfighter , and on very high-speed aircraft including the North American X-15 .
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 ...
Planform view of a 767-300, showing its 156 ft 1 in (47.57 m) wide wing with a 3,050 ft 2 (283.3 m 2) area and a 31.5° sweepback, [111] for a 7.99:1 aspect ratio. The 767 is a low-wing cantilever monoplane with a conventional tail unit featuring a single fin and rudder.
The ratio of the length (or span) of a rectangular-planform wing to its chord is known as the aspect ratio, an important indicator of the lift-induced drag the wing will create. [7] (For wings with planforms that are not rectangular, the aspect ratio is calculated as the square of the span divided by the wing planform area.)
Planform view of an Air Tahiti Nui 787-9 showing its 9.6 wing aspect ratio and 32° wing sweep Front view of a Vietnam Airlines 787-10, the fuselage is 19 ft (5.8 m) wide and 19 + 1 ⁄ 2 ft (5.94 m) high while the fan has a 9.3 ft (2.8 m) diameter
This tends to increase the lift-induced drag of the foreplane, which may be given a high aspect ratio in order to limit drag. [33] Such a canard airfoil has a greater airfoil camber than the wing. Another possibility is to decrease the aspect ratio of the canard, [34] with again more lift-induced drag and possibly a higher stall angle than the ...
In aerodynamics, the lift-to-drag ratio (or L/D ratio) is the lift generated by an aerodynamic body such as an aerofoil or aircraft, divided by the aerodynamic drag caused by moving through air. It describes the aerodynamic efficiency under given flight conditions. The L/D ratio for any given body will vary according to these flight conditions.