Requirement
The F-35B STOVL variant of the Joint Strike Fighter (JSF) aircraft is intended to replace the vertical flight Harrier, which was the world's first operational short-takeoff / vertical-landing fighter. A requirement of the JSF is that it can attain supersonic flight, and a suitable vertical lift system that would not compromise this capability was needed for the STOVL variant. The solution came in the form of the Rolls-Royce LiftSystem, developed through a $1.3 billion System Development and Demonstration (SDD) contract from Pratt & Whitney. This requirement was met on 20 July 2001.
Read more about this topic: Rolls-Royce Lift System
Famous quotes containing the word requirement:
“Reporters for tabloid newspapers beat a path to the park entrance each summer when the national convention of nudists is held, but the cult’s requirement that visitors disrobe is an obstacle to complete coverage of nudist news. Local residents interested in the nudist movement but as yet unwilling to affiliate make observations from rowboats in Great Egg Harbor River.”
—For the State of New Jersey, U.S. public relief program (1935-1943)
“The work of the political activist inevitably involves a certain tension between the requirement that positions be taken on current issues as they arise and the desire that one’s contributions will somehow survive the ravages of time.”
—Angela Davis (b. 1944)
“The first requirement of politics is not intellect or stamina but patience. Politics is a very long run game and the tortoise will usually beat the hare.”
—John Major (b. 1943)