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F-117 Nighthawk F-117 flying over mountains in Nevada in 2002 General information Type Stealth attack aircraft National origin United States Manufacturer Lockheed Corporation Status Used as training aircraft as of 2024 Primary user United States Air Force Number built 64 (5 YF-117As, 59 F-117As) History Introduction date October 1983 ; 41 years ago (1983-10) First flight June 18, 1981 ; 43 ...
Early stealth aircraft were designed with a focus on minimal radar cross section (RCS) rather than aerodynamic performance. Highly stealthy aircraft like the F-117 Nighthawk are aerodynamically unstable in all three axes and require constant flight corrections from a fly-by-wire (FBW) flight system to maintain controlled flight. [20]
Richard C. Scherrer (1919–2018) [1] was an aircraft designer notable for pioneering work on revolutionary aircraft designs with extremely low radar cross sections that led to the Lockheed F-117 Nighthawk and Northrop Grumman B-2 Spirit.
One means to reduce IR signature is to have a non-circular tail pipe (a slit shape) to minimize the exhaust cross sectional area and maximize the mixing of hot exhaust with cool ambient air (see Lockheed F-117 Nighthawk, rectangular nozzles on the Lockheed Martin F-22, and serrated nozzle flaps on the Lockheed Martin F-35).
After a series of successful test flights beginning in 1977, the Air force awarded Skunk Works the contract to build the F-117 stealth fighter on November 1, 1978. During the entirety of the Cold War , the Skunk Works was located in Burbank, California, on the eastern side of Burbank-Glendale-Pasadena Airport ( 34°12′03″N 118°21′07″W ...
F-117 Nighthawk F-22 Raptor Benjamin Robert Rich (June 18, 1925 – January 5, 1995) was an American engineer and the second director of Lockheed 's Skunk Works from 1975 to 1991, succeeding its founder, Kelly Johnson .
Pyotr (Petr) Yakovlevich Ufimtsev (Russian: Пётр Я́ковлевич Уфи́мцев; born 8 July 1931) is a Soviet and Russian electrical engineer and mathematical physicist, best known for his pioneering work on the physical theory of diffraction (PTD), which laid the groundwork for modern stealth aircraft technology.
The Lockheed F-117 Nighthawk is not an inherently stable design. Modern military aircraft, particularly low observable (" stealth ") designs, often exhibit instability as a result of their shape. The Lockheed F-117 Nighthawk, for instance, employs a highly non-traditional fuselage and wing shape in order to reduce its radar cross section and ...