Powerful Jet

In its "flying laboratory," General Electric Co. gives striking proof of the power of a jet engine. To test a new jet G.E. slings it under the bomb bay of a heavy B29. With its four 2,400-h.p. piston engines roaring, the bomber takes off and climbs to high altitude. Then the jet is started and its performance studied under varying conditions of speed, air density and temperature.

By this time, the power is so great that bomber's regular engines have to be throttled down. When conditions are right, in fact, the engines can be stopped entirely and their propellers feathered. The single jet takes over and, unaided keeps the great bomber aloft.

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