Word: sideslip
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Dates: during 1960-1969
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...Pilot Joe Walker last week gunned his rocket-powered X-15 to the greatest speed any airplane has ever achieved-an imagination-defying 3.920 m.p.h. In the nose of the X-15, a grapefruit-sized electronic wizard familiarly known as "the Q-ball" gauged the basic critical factors-direction, sideslip, friction-and told Joe Walker that he could safely press for the record. Said Walker, with affection: "The Q-ball is a go-no-go item. Only if she checks...