Word: turboprops
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Test Pilot Skeets Coleman started the Allison turboprop engine (5,500 h.p.), and the two counterrotating propellers roared like an indoor tornado. Climbing at about 2.5 ft. per second (a slow walk), the plane rose 60 ft. under perfect control. The restraining cables, hanging slack, were not necessary; Pilot Coleman rose and descended three times, hanging on his prop for 15 minutes and landing on the exact spot from which he took...
BABY gas turbine, the size of an auto engine but six to eight times as powerful, is being developed by General Electric for the Navy. The small engine will be used primarily to power helicopters, but can also be converted into a turbojet or turboprop for light, fixed-wing aircraft...
United Aircraft's Pratt & Whitney division announced last week that it was ready to start commercial sales of its T-34 turboprop engine, the most powerful on the market. Up to now, the T-34 has been available only to the armed forces, which are installing it in an Air Force Douglas Globemaster and in two Navy Lockheed Super Constellations. The T-34 will develop 5,600 h.p., delivering 90% of it to a propeller and the remaining 10% to a jet thrust. Though turboprop planes are slower than pure jets, they are more efficient at take offs...
...pete with state-subsidized airlines, may be forced to buy jets for competitive reasons of prestige, said Smith. But the domestic industry will not be likely to adopt a plane that cannot earn its keep. Actually, he said, the next major step in U.S. transport will be to turboprop planes, which use the jet blast to turn propellers. Since the armed forces are now paying for development of several turboprop transports, Smith said, "there should be available within a few years turboprop power plants suitable in size and power output for some of the larger, faster transports of tomorrow . . ." Pure...
...much longer range, will be able to fly from London to Johannesburg with one stop in 20 hours, a trip which now takes the Comet about 24 hours, with five refueling stops. Furthermore, the Super Connie itself will shortly take an intermediate step toward jet propulsion in a "turboprop" (i.e., jet-driven propellers) version as soon as turboprop engines are available for commercial use. (Lockheed is already building two Super Connies with Pratt & Whitney T-34 turboprops for the Navy.) These engines will give the Super Connie a cruising speed (415 m.p.h.) close to that of the Comet...