Word: sst
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...League's basic objection to the supersonic transport (SST), and the one it emphasizes most, is the sonic boom. A sonic boom is the shock wave created by an object flying faster than the speed of sound. The sharp explosive sound is pushed along in front of the object for as long as the supersonic flight lasts. At 1800 miles per hour, or about two and one-half times the speed of sound, the SST would leave behind a 50-mile-wide "bang zone," affecting perhaps five million people on a single flight across...
...pinning its hopes for re-entry into the commercial airframe business, a field that it left (except for business jets) in 1962, when it rolled out the last of 170 turboprop Electras. The No. 1 target was the Government-supported program to build a U.S. supersonic transport. When its SST hopes crashed last...
Lockheed expects an 800-plane market for the air bus by 1980, on grounds that it will become a physical as well as economic necessity. Designed for the long haul, Douglas' 250-passenger "stretched" DC-8 and Boeing's upcoming 490-passenger 747 and SST will not even begin to handle all the future growth in air travel, which is expected to more than double in eight years. Flocks of smaller, short-haul planes are even now jamming air corridors and ground terminals. Reflecting the desire of many airlines for more seats but fewer planes is the fact...
...giant plane's wing, then tore through a rudder during a publicity flight. Since then, tests of XB-70 No. 1 have contributed aerodynamic and thermodynamic knowledge, including studies of the sonic-boom problem that are being used in the development of such heavyweight transports as the SST...
...experts had spent a decade vainly trying to develop a highly reliable midair collision-avoidance system (CAS). The number of "near misses" by U.S. aircraft had risen to more than 400 a year; the air traffic problem would soon be compounded by the arrival of jumbo jets and the SST. Alarmed, the Air Transport Association in January started an urgent program joining six avionics manufacturers* in the search for a solution. Last week the ATA triumphantly anounced the payoff; the blueprint for a CAS that could make the skies as safe as a sailing pond...