Word: blast
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Dates: during 1940-1949
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...genuflecting more vigorously than usual before his brother's memory. He was doing everything in his power to get Huey's 29-year-old son Russell elected to the U.S. Senate. He sent his big, tough-looking Lieut. Governor Bill Dodd out on the road to blast Russell's closest competitor, Judge Robert F. Kennon, who had also had the audacity to oppose Earl for governor last January...
...heart would heat 1,000 five-room houses in zero weather (though much of the engine's exterior is cool). From the air intake in its snout, invisible hooks reach out; their suction will clasp a man who comes too close and break his body. The blast roaring out the tail will knock a man down at 150 ft. The reaction of the speeding jet of gas pushes against the test stand with a two-ton thrust. If the engine were pointing upward and left unshackled, it would take off like a rocket, each pound of its weight overbalanced...
This is mostly because the "propulsive efficiency" of the jets at ordinary speeds is low compared with conventional airplanes. Propeller-driven planes are pushed forward by the reaction from the blast of air forced backward by the prop. When the plane is standing still on the ground with its propeller roaring, all the engine's effort is wasted on merely moving air. None goes into forward motion; the propulsive efficiency is zero. When the plane is in the air, the propulsive efficiency is high. Propellers are designed in such a way that when the plane is flying at full...
...planes are pushed by the reaction of the blast of hot gas shooting out the tail pipe. The present problem is that this blast is speeding much too fast-at about 1,300 m.p.h. Even when the plane is flying at 600 m.p.h., the blast is shooting backward in still air at 700 (1,300 minus 600) m.p.h. The engine is still wasting too much energy merely stirring up the air. To approach the normal propulsive efficiency of a propeller plane, a jet plane would have to fly faster than sound. But one arresting compensation-for the jets-is that...
...NACA, the U.S. Air Force and various private companies are enthusiastic about ram-jets. They think of them chiefly as power plants for guided missiles, those "uninhabited aircraft" with which warring continents might blast one another to rubble from different sides of the earth. Super-enthusiasts think they may have a peacetime future also. A speed-hungry traveler, ramjet propelled at Mach 3, may start from New York at noon and flying west would see the sun sink rapidly in the east. He'd be in Honolulu in time for breakfast the same...