Word: fasters
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Dates: during 1940-1949
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...that week, the Russians said, they killed or captured at least 183,000 German troops, and the enemy was losing 30,000 more every day. Some Red thrusts had maintained a pace of 20 to 24 miles a day -faster than the Wehrmacht in its blitziest days, against pushover opposition, had moved in Poland, France, Greece, Yugoslavia...
Hard Game for Fighters. Meanwhile the ordinary missiles made trouble enough. A new type, with swept-back wings, began coming over at 390 m.p.h., which was 40 m.p.h. faster than the square-winged model and painfully close to the top speeds of the fastest fighters. One fighter had to chase his robot for 20 miles before he knocked it down...
...Sometimes, despite a surplus of power, a plane in a dive can go no faster and may actually begin to lose speed...
...speed of sound. Reason: local changes in air speed on the plane's surfaces. Air molecules, hastening to get out of a plane's way, speed up as they flow around the curved surfaces of the plane's wings and propeller. The wider the curve, the faster the air travels. This accelerated air, moving faster than the plane, may reach supersonic speeds and create local shock waves, known to airmen as "compressibility burble." Designers have reduced this hazard by giving wings and propellers thinner leading edges; these are now shaped more like a knife than a teardrop...
...Supersonic, coined to describe sound waves inaudible to the human ear, is now also commonly used to mean faster than sound...