Word: rotors
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Dates: during 1960-1969
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...other cities, including the prospect of direct hops between Manhattan and the Washington, D.C. Mall or Boston's new Government Center. An ideal future workhorse for such short flights is now being developed: Lockheed's CL 1026, a commercial version of the U.S. Army's rigid-rotor Cheyenne. A compound craft with a speed of 230 m.p.h. and range of 250 miles, the CL 1026 combines helicopter rotors for vertical landings and take-offs with fixed stub wings and propeller for level flight...
...long way with the expansion of European railroads, and soon began turning out early designs in circuit breakers, turbines and other heavy gear. And while its labs now work on cryogenics, lasers and other new technologies, B.B.C. continues to improve the old ones. A recent B.B.C. breakthrough in rotor-blade design will permit its American Electric turbines to use low-pressure, nuclear-fired steam and turn at a slow 1,800 r.p.m. while producing as much power as conventional turbines spinning twice as fast...
Impressive Talents. The Cheyenne's stubby wings help lift it at high speeds and ease the strain on the rotor blades overhead. Vertical takeoffs and landings, plus its hovering capability, are aided by a tail-mounted stabilizing rotor. Increasing its acceleration capacity, which carries the Cheyenne from zero-hover to 230 m.p.h. in 38 seconds, is a rear-mounted pusher propeller. Moreover, the plane can decelerate from this speed to zero-hover in 17 seconds...
...from a waiting truck-trailer and swung it high over the construction site beside the San Antonio River. Ever so delicately, Crane Operator Gene Smith steadied the massive shell against the push of the wind; every gust was countered by radioed adjustments in the pitch of a helicopter tail rotor mounted on the lifting rig. With directional help from a magnetic compass, Smith gently stacked each concrete box atop an identical unit, to which it was sealed with more concrete. Seventy-two times last week, a guest room was thus lofted into place around the 21-story elevator core...
American is also installing Astrolog maintenance recorders, which the crew can switch on to take complete readings on engine-performance facts from rotor speed to fuel flow at any time during the flight. At the end of each flying day, the taped engine data will be sent over telephone wires to American's maintenance center in Tulsa, Okla...