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The Bell X-2 (nicknamed "Starbuster" [1]) was an X-plane research aircraft built to investigate flight characteristics in the Mach 2–3 range. The X-2 was a rocket-powered, swept-wing research aircraft developed jointly in 1945 by Bell Aircraft Corporation, the United States Air Force and the National Advisory Committee for Aeronautics (NACA) to explore aerodynamic problems of supersonic ...
Code of the United States Fighting Force. The Code of the U.S. Fighting Force is a code of conduct that is an ethics guide and a United States Department of Defense directive consisting of six articles to members of the United States Armed Forces, addressing how they should act in combat when they must evade capture, resist while a prisoner or ...
25×5: the Continuing Adventures of the Rolling Stones. 25x5: The Continuing Adventures of the Rolling Stones is a documentary featuring rock group the Rolling Stones, charting the period between the band's formation in 1962 and the release of its then latest album, 1989's Steel Wheels. [1] It was directed by acclaimed British documentary-maker ...
Number built. 1. The Douglas X-3 Stiletto is a 1950s United States experimental jet aircraft with a slender fuselage and a long tapered nose, manufactured by the Douglas Aircraft Company. Its primary mission was to investigate the design features of an aircraft suitable for sustained supersonic speeds, which included the first use of titanium ...
The X-7 was called into production by the United States Air Force requirement for the development of an unmanned ramjet test plane with a top speed of at least Mach 3 (3,200 km/h; 2,000 mph). [1] The X-7 project was developed under the AMC designator MX-883 and was given in the Lockheed in-house designation L-171.
The head of the Office of Strategic Services (OSS), William Donovan, created the X-2 Counter Espionage Branch in 1943 to provide liaison with and assist the British in its exploitation of the Ultra program's intelligence during World War II. [1] A few months before, Donovan had established a Counterintelligence Division within the Secret ...
In elementary algebra, the binomial theorem (or binomial expansion) describes the algebraic expansion of powers of a binomial.According to the theorem, it is possible to expand the polynomial (x + y) n into a sum involving terms of the form ax b y c, where the exponents b and c are nonnegative integers with b + c = n, and the coefficient a of each term is a specific positive integer depending ...
The partial sums of the series 1 + 2 + 3 + 4 + 5 + 6 + ⋯ are 1, 3, 6, 10, 15, etc.The nth partial sum is given by a simple formula: = = (+). This equation was known ...