Word: swept
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Dates: during 1980-1989
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...high speeds, an aircraft operates most efficiently if its wings intercept the air at an angle. Trouble occurs when the plane is flying at slower, subsonic speeds: swept-back wings reduce lift and increase fuel consumption. One way designers have tried to overcome this problem is by creating "variable geometry" aircraft that can swing back their wings at higher speeds and bring them forward for reduced speeds, especially during takeoffs and landings, when the plane needs maximum lift...
...swing-wing planes are difficult to build. They require greater structural strength, weigh more and burn more fuel than a comparable fixed-wing aircraft. As far back as 1945, Robert T. Jones of NASA's Ames Research Center, who proposed the first U.S. swept-wing aircraft, saw a simple solution: a single, rigid wing that would swing on a single pivot point. The oblique wing, as he called it, would vastly simplify the structural problem. The fact that one end of the wing would be pointing forward might look odd, but it was, he realized, aerodynamically unimportant. In high...
...push it very much because it looked pretty weird.") By then, the U.S. was seriously considering construction of a large SST, a commercial supersonic transport, and wind-tunnel tests confirmed that the oblique wing should do the things he claimed it could. As Jones explains, at supersonic speeds conventional swept-back wings create noticeable pressure on each other, like two motorboats speeding side by side through the water and slamming waves into each other's hulls. But this mutual interference is reduced when one boat pulls ahead of the other. Despite raised eyebrows at the plane...
Without Dixon and Schuler in the mile, and Randall in the pole vault, Northeastern swept the Crimson in both events. Gus Udo's absence was also felt in the triple jump, where the Huskies took first and second. Despite these losses, the Crimson gave Northeastern all it could handle in the other events...
...five-day work week, granted on Jan. 31 after decades of six-day work weeks in Poland. But that only aggravated the economic crisis by further reducing production?especially in the coal-mining industry, whose output fell by nearly 10% in 1981. In addition, the country was soon swept by a spate of wildcat strikes over local issues. In some cases, Solidarity chapters were taking on the Communist Party bureaucracy by demanding the ouster of corrupt local officials or the conversion of party buildings to public hospitals...