Word: fueled
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Dates: during 1960-1969
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...power, the F-111 uses two radical TF-30 engines built by Pratt & Whitney Aircraft. At slow cruising speeds, they are turbofans similar to the engines on up-to-date jetliners, very sparing of fuel. At Mach 1 and above, the fan action is cut down or eliminated. When full power is called for, the engine uses an afterburner. Aerodynamicists credit the versatile engines as well as the wings for the varied talents...
...mile flight over the Pacific got its thrust by passing vaporized cesium metal through a hot tungsten filter. This action strips electrons from the cesium, speeds the positively charged ions out the rear of the engine. The great advantage of this process is that it requires remarkably little fuel-only one-tenth of that for a conventional chemical rocket. Even the smallest ion engine could keep a satellite on its right course for more than ten years by giving it gradual nudges. On a 300-day trip to Mars, a full-scale ion rocket could push five times as much...
...role, the Air Force gave out a brief performance profile of the A11 as interceptor: the two-man (pilot and fire-control officer) plane, for example, can fly from Minneapolis to the northern tip of Hudson's Bay in an hour, and still have enough fuel to return to base. On target, the A11 is all killer, can make a second pass at an enemy bomber in one-fourth the time needed by a more maneuverable but slower F-106. Plans are now to use the plane for an assault on the Russian-held world speed record...
...have broken the worry barrier yet. Governments worry about the high cost of developing it, which ranges from $13.5 million per plane for the British-French job to $40 million for a U.S. design that has not yet been settled on. Airframe makers worry about technical problems -from keeping fuel cool to developing new alloys. Among the most worried of all, as it turned out last week, are the world's airlines, which have already ordered 45 Concordes and 91 of the proposed bigger, faster U.S. model...
Irritating Inconsistencies. Perhaps the most irritating and confusing aspect of the excise taxes-to seller and buyer alike-is the grand inconsistencies that pepper them. Radio tubes are taxed but not transistors, furs but not knock-'em-dead $3,000 evening dresses, aviation gasoline but not jet fuel. Many items that were initially taxed as luxuries have become the necessities of a newer generation-refrigerators, luggage and telephones, for example...