Word: sonics
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Dates: during 1960-1969
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...Bogota, at the annual meeting of the 93-member International Air Transport Association-which the normally secretive outfit opened to the press for the first time in 20 years-airmen sounded sorry that they had ever heard of the SST. They fretted about sonic booms, expressed reluctance to give up the highly profitable jets that they now operate, and worried about the shattering effect that they fear supersonics will have on their balance sheets. "At $40 million," said Air India's Chairman J.R.D. Tata, "we would be paying five times as much for an aircraft doing only 21 times...
...lengthy ascents they require to reach cruising altitudes, the engineers insisted that the planes will be practical down to flights of only 600 miles, will be able to operate productively for ten hours a day v. nine for the present jets. They held out promise that the sonic-boom problem will be solved eventually, possibly by delaying until high altitudes the crossover from subsonic to supersonic speeds. Most of all, they stressed the inevitability of the SST-a telling argument to an audience that included many whose careers date back to the trimotor Ford...
...latest contribution to submarine meteorology was made by modified Swallow buoys,* which are 13-inch aluminum spheres ballasted to sink until they reach water of a selected density. Crammed with apparatus that reports its observations with sonic pings, the buoys can be followed accurately through the depths. They can communicate with each other and measure their distance apart; they can be instructed by a coded sonic signal and told when to drop ballast, rise to the surface, and call by radio for pickup...
...plane has so far got exactly nowhere. Now the big argument seems to be whether it is really practicable in its proposed form. Aviation Consultant William Littlewood recently told a Washington aeronautical conference that ground dwellers cannot adjust to the SST's shattering sonic boom, suggested "careful routing" of the planes at a cost in time and fuel. Last week Clarence L. "Kelly" Johnson, the Lockheed vice president who designed both the U-2 and the A11, said as he received an achievement award from the National Aviation Club: "I am very concerned about the sonic boom where...
Hold That Shot. In the simplest procedures, a pulse generator sends bursts of current to a crystal, which then produces sonic energy at frequencies ranging from one million to as high as 10 million cycles per second. The pulses pass through a transducer, a combined transmitter-receiver the size of a microphone, which may be simply moistened with water and held against a patient's skull. For a pregnant woman, the transducer is held against the abdomen, which is smeared with light...