Word: turbojet
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Dates: during 1950-1959
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...that interfere with the smooth flow of air. Beset by shock waves, the efficiency of a propeller falls off dismally. Extremely large propellers, geared to turn slowly, dodged the shock waves for a while, but as the speed of airplanes increased, even big props ran into trouble. When the turbojet engine came along, designers of speedy aircraft joyfully abandoned the propeller...
...turbojet engine, however, also has its troubles. A jet plane lacks power while taking off, when power is needed most. It is inefficient at low speeds, and therefore cannot save fuel by slowing down, as when "stacked up" over a fogbound airport. These faults were not so bad in the case of fast fighters, but when designers tackled jet airliners or long-range bombers, they missed the good old propeller, which gets a firm grip on the air at even slow take-off speeds...
...power flight, the Cyclone's tiny, 141-Ib. turbojet engine atop the fuselage gives the plane a range of 185 miles at a cruising speed of 155 m.p.h. Builder Fouga hopes to sell similar planes in the U.S. Estimated price...