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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.
NACA experience provided a model for World War II research, the postwar government laboratories, and NACA's successor, the National Aeronautics and Space Administration (NASA). NACA also participated in development of the first aircraft to fly to the "edge of space", North American's X-15. NACA airfoils are still used on modern aircraft.
The cowling consists of a symmetric, circular airfoil that is wrapped around the engine. In a normal planar airfoil, like a wing, the difference in airspeeds, and their associated changes in pressure, on the top and bottom surfaces, enhances lift. In the case of the NACA cowl, the ring-shaped airfoil is positioned so this lift effect is forward.
Streamlines around a NACA 0012 airfoil at moderate angle of attack. A foil generates lift primarily because of its shape and angle of attack.When oriented at a suitable angle, the foil deflects the oncoming fluid, resulting in a force on the foil in the direction opposite to the deflection.
There are two types of ducts; accelerating and decelerating. With accelerating ducts, the duct profile is airfoil-like curved towards the inner side, which increases the inflow velocity and efficiency of the propeller. This effect works at lower speeds and is compensated increasingly at higher speeds by the added drag of the duct, which tends ...
The Ferrari F40 sports car has "NACA style" side and hood scoops.. It is especially favored in racing car design. [4] [5] Sports cars featuring prominent NACA ducts include the Ferrari F40, the Lamborghini Countach, the 1996–2002 Dodge Viper, the 1971–1973 Ford Mustang, the 1973 Pontiac GTO, the 1979 Porsche 924 Turbo, the Maserati Biturbo, the Nissan S130, and the Porsche 911 GT2.
Some Democrats are dismissing the forthcoming DOGE push to cut wasteful government spending. Others in the party aren't totally writing off what Elon Musk and Vivek Ramaswamy are selling.
Data from Jane's All the World's Aircraft 1976–77 General characteristics Crew: 2 Capacity: 4–6 passengers Length: 34 ft 8 in (10.57 m) Wingspan: 42 ft 8 + 1 ⁄ 4 in (13.011 m) (over tip tanks) Height: 12 ft 9 in (3.89 m) Wing area: 229 sq ft (21.3 m 2) Airfoil: NACA 63 2 -415 at root, 63A212 at tip Empty weight: 4,870 lb (2,209 kg) Max takeoff weight: 9,000 lb (4,082 kg) Fuel capacity ...