The F-117 Nighthawk would be unlike any aircraft ever built. A plane that would trade speed and maneuverability for a new kind of advantage.
By the early 1970’s, sophisticated air
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The F-117 Nighthawk would be unlike any aircraft ever built. A plane that would trade speed and maneuverability for a new kind of advantage.
By the early 1970’s, sophisticated air defense systems were posing a huge threat to NATO aircraft. During the Vietnam War, thousands of American aircraft were lost to radar guided anti-aircraft guns and surface-to-air missiles. In 1973, the Israeli Air Force lost over one hundred aircraft in a matter of days during the Yom Kippur war. Military planners worried that if war were to break out in Central Europe, NATO aircraft would be up against a nearly impenetrable Soviet air defense network. By some estimates, NATO air forces would be depleted within a week.
In 1974, the United States Department of Defense (DARPA) requested that leading aircraft manufacturers explore the possibility of designing an aircraft that could slip through air defenses by evading radar, infrared and acoustic spectrums of detection.
Lockheed, although not initially invited by DARPA to explore stealth aircraft technologies, would soon make a major breakthrough. An engineer at Lockheed had stumbled across the groundbreaking research of a Soviet mathematician named Pyotr Ufimstsev. Ufimstesv's research demonstrated that the strength of a radar return from an object is related to its edge configuration, not just its size. It meant that, with the right shape, a large object could be made to appear tiny on radar. Incorporating the research into sophisticated computer software, Lockheed's engineers could now design an aircraft that would be virtually invisible to radar. But calculating the radar return of curved surfaces like those found on aircraft, would require more computing power than was available at the time. To get around this limitation, Lockheed's engineers would use a technique called faceting, where the ordinarily smooth surfaces of an aircraft would be broken up into a series of flat surfaces.
It would mean that the radically shaped F-11