Word: streamingly
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...lapels-his customary way of speaking when he is serious-Khrushchev began: "I liked the last statement of Eisenhower at his press conference-not all of it, I must tell the truth: there were right things and wrong things. In any case, what he said was a fresh stream of ozone...
...powerful and presumably loudest jet engine, the Pratt & Whitney J-57, is working on ways to reduce its roar to a tolerable level. One method worked out by Engineers John M. Tyler and George B. Towle utilizes the fact that the frequency (pitch) of the noise generated by a stream of gas varies with the stream's diameter. The big stream that shoots from the tailpipe of a jet engine stirs up a lot of low-frequency sound that carries for miles as a thunderous roar. Small gas streams, e.g., air escaping from a compressor hose, give high-frequency...
Tyler and Towle first tried shooting the engine's stream of hot gas through a sheet-metal plate perforated with small holes close together. This did not work very well. The wakes of the little jets of gas acted upon each other and caused violent turbulence that made too much noise of its own. Next they added to the tail pipe a metal cylinder with holes all around and closed at the rear end with a metal cone. It worked well in reducing noise level, but since the gas jets pointed every which way, the engine lost nearly...
...Fast Stream. One of the disadvantages of the conventional turbojet engine is its lack of propulsive efficiency. The stream of hot gas from its tailpipe speeds backward much faster than the airplane is flying forward. Much of its energy is wasted in creating air turbulence. The efficiency would be greater if the speed of the gas stream were only moderately greater than the speed of the airplane. But conventional jet engines cannot slow their gas stream without losing efficiency in other ways...
...compressed passes through the combustion chambers to form the high-speed jet. In the bypass engine, part of the air from the forward compressor flows around the combustion chambers (incidentally cooling trie engine's skin) and mixes with the speeding gas in the tailpipe. It cools the stream and slows it, but adds greatly to its mass. The net result is a large, comparatively slow stream that does not waste a large amount of energy by outspeeding its airplane...