Word: fueled
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Dates: during 1960-1969
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When the weather cleared in the Red River delta to the north, seven flights of American fighter-bombers hammered the Ha Gia fuel dump 14 miles outside of Hanoi and only three miles from Phuc Yen, North Viet Nam's largest airbase. It was the fourth raid on Ha Gia in two months and served notice on Hanoi that the U.S. would continue blasting strategic targets near the capital, despite the recent international uproar (TIME, Dec. 23) triggered by North Viet Nam's discredited charges that the U.S. was bombing residential areas inside Hanoi itself...
...energy for long-range space flights. Jupiter's gravity, for example, would exert a tremendous pull on a passing spacecraft, accelerating it greatly and deflecting its course. Thus Jovian gravity could be used, in effect, to gain both thrust and a mid-course correction without the expenditure of fuel. Space scientists, like expert billiard players, can precisely determine the amount of acceleration and degree of deflection by careful control of both the velocity and course of the spacecraft as it approaches Jupiter...
While the use of the interplanetary billiard technique drastically cuts travel time, Stewart says, it does little to reduce the large amounts of fuel and great initial thrust required to send a spacecraft to the distant planets. But another rapidly developing propulsion system, the solar-powered ion engine, may well solve that problem in time for the flights of the 1970s. Using electricity generated by solar panels, these engines produce a stream of ions (charged atomic particles) that provide a minute amount of thrust - usually measured in hundredths of a pound...
Accelerated by Ions. Unlike chemical rockets, which burn most of their fuel in a few minutes, ion engines can operate continuously for months and even years on an incredibly small amount of fuel. One experimental ion engine recently completed 341 days of steady operation. Thus, after a powerful chemical rocket has boosted a spacecraft beyond the earth's gravitational pull, the ion engine can take over, gradually and steadily accelerating the craft to its planned velocity over the months and years of a long space trip...
Though the thrust supplied by the new fuel is lower than the performance of conventional liquid propellants, it has some distinct advantages. It does away with the necessity of disposing of its major ingredient in space, and scientists calculate that because a MONEX W rocket will manufacture part of its fuel in flight, it will actually have less lift-off weight than a conventionally fueled rocket designed for the same long-range mission...