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An airfoil (American English) or aerofoil (British English) is a streamlined body that is capable of generating significantly more lift than drag. [1] Wings, sails and propeller blades are examples of airfoils. Foils of similar function designed with water as the working fluid are called hydrofoils.
In fluid dynamics, the lift coefficient (CL) is a dimensionless quantity that relates the lift generated by a lifting body to the fluid density around the body, the fluid velocity and an associated reference area. A lifting body is a foil or a complete foil-bearing body such as a fixed-wing aircraft. CL is a function of the angle of the body to ...
A: blue line = chord, green line = camber mean-line, B: leading-edge radius, C: xy coordinates for the profile geometry (chord = x axis; y axis line on that leading edge) The NACA airfoil series is a set of standardized airfoil shapes developed by this agency, which became widely used in the design of aircraft wings.
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]
A Kammback —also known as a Kamm tail or K-tail —is an automotive styling feature wherein the rear of the car slopes downwards before being abruptly cut off with a vertical or near-vertical surface. A Kammback reduces aerodynamic drag, thus improving efficiency and reducing fuel consumption, [1] while maintaining a practical shape for a ...
Their list of the hottest toys of 2024 includes the year's best toys for children of all ages, interests and abilities. Find Toy Insider's 20 best holiday toys below.
The supersonic flow over a supercritical airfoil terminates in a weaker shock, thereby postponing shock-induced boundary layer separation. A supercritical aerofoil (supercritical airfoil in American English) is an airfoil designed primarily to delay the onset of wave drag in the transonic speed range. Supercritical airfoils are characterized by ...
KM "Caspian Sea Monster" - largest GEV ever built. Lun-class ekranoplan - Lun Class Ekranoplan. A-90 Orlyonok - Orlyonok Ekranoplan. Beriev Be-2500 - Beriev Be- 2500 (Future Plane) Aqualet - New 2011 Russian development of Ground Effect Vehicle. Chaika A-050 < "A-050 Chaika-2". globalsecurity.org. Retrieved April 5, 2021.