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That is the reference dimension of the airfoil section. Different definitions of airfoil thickness An airfoil designed for winglets (PSU 90-125WL) The shape of the airfoil is defined using the following geometrical parameters: The mean camber line or mean line is the locus of points midway between the upper and lower surfaces. Its shape depends ...
The Kline–Fogleman airfoil or KF airfoil is a simple airfoil design with single or multiple steps along the length of the wing. It was originally devised in the 1960s for paper airplanes. It was originally devised in the 1960s for paper airplanes.
For example, the NACA 2412 airfoil has a maximum camber of 2% located 40% (0.4 chords) from the leading edge with a maximum thickness of 12% of the chord. The NACA 0015 airfoil is symmetrical, the 00 indicating that it has no camber. The 15 indicates that the airfoil has a 15% thickness to chord length ratio: it is 15% as thick as it is long.
Data from Sailplane Directory and Soaring General characteristics Crew: one Wingspan: 25 ft 0 in (7.62 m) Wing area: 100 sq ft (9.3 m 2) Aspect ratio: 6.25 Airfoil: Abrial 15% Empty weight: 150 lb (68 kg) Gross weight: 350 lb (159 kg) Performance Maximum glide ratio: 20:1 at 60 mph (97 km/h) Rate of sink: 210 ft/min (1.1 m/s) at 47 mph (76 km/h) Wing loading: 3.5 lb/sq ft (17 kg/m 2) See also ...
Years of research and experience with the unusual conditions of supersonic flow have led to some interesting conclusions about airfoil design. Considering a rectangular wing, the pressure at a point P with coordinates (x,y) on the wing is defined only by the pressure disturbances originated at points within the upstream Mach cone emanating from point P. [3] As result, the wing tips modify the ...
Clark Y is the name of a particular airfoil profile, widely used in general purpose aircraft designs, and much studied in aerodynamics over the years. The profile was designed in 1922 by Virginius E. Clark using thickness distribution of the German-developed Goettingen 398 airfoil. [1]
In comparison with conventional designs, Davis's design was relatively thick, having a short chord while still being deep enough to allow a high aspect ratio. Davis claimed the new wing would offer reduced drag over designs then in use, and would offer considerable lift even at a small angle of attack. Additionally the thickness of the wing ...
By the World War II era many aircraft designs were using metal monocoque structures due to their higher operating airspeeds, although fabric-covered control surfaces were still used on early mark Spitfires and other types. The Hawker Hurricane had a fabric covered fuselage, and they also had fabric covered wings until 1939.
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