Word: turbofan
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Dates: during 1960-1969
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...companies stalled, British Aircraft, which had the One-Eleven on its drawing boards, built in the features that American wanted-with no promise of an order. Just to please Customer Pan Am, Dassault willingly redesigned its Mystère 20* to make it larger and switched to General Electric turbofan jet engines. If such aggressiveness continues and U.S. framemakers offer no better fight, the U.S. could be toppled from the position of planemaker to the world, which it has held ever since the first DC-3 lumbered down the runway...
Giant, Shattered Fish. As soon as it was airborne, the giant and graceful Boeing 707-120B-the latest in jetliners and the pride of American Airlines-rose dramatically, boosted by its new turbofan engines. At about 700 feet the jet banked smoothly to the left in accordance with its flight plan, then veered sharply, almost rolled over completely-and plunged nose first into the tidal marshes of Jamaica...
...belly of the high-wing jet will be only 50 in. above the ground, so that trucks can easily be driven through its large tail door into its air-conditioned, pressurized cargo hold. Power from the four Pratt & Whitney turbofan engines will be great enough to lift the plane off 6,000-ft. runways with a 50,000-lb. load, making it possible to fly in and out of fields all over the world. It will fly the Atlantic with a 60,000-lb. load, the vaster Pacific with a 20,000-lb. load. The plane will be built...
...Astrojet gets its pep from a new engine: the Pratt & Whitney turbofan, which develops 17,000 Ibs. thrust. Basically, the turbofan sucks in a larger mass of air than regular jet engines to produce greater thrust with less fuel. A fan, set just inside the air intake (see diagram), pulls in the air. then blasts about 60% of it out through openings on the side of the jet pod to provide just under 50% of the engine's total thrust. The rest of the air is directed into the engine's burning chamber. The engine produces 20% more...
Engineers have long known that the turbofan is the most efficient engine for subsonic aircraft. Rolls-Royce pioneered turbofan development, turned out a prototype of its famed Conway by-pass engine in 1950. But U.S. enginemakers, under pressure from the military to produce regular jet engines that are more efficient at supersonic speeds, lagged behind...