Word: rotor
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...cost of each Cheyenne has risen from an expected $1.4 million to about $2.4 million. The immediate cause of the cancellation, however, was the Army's disbelief that a "satisfactory aircraft would be delivered." Rotor stability and control problems had shown up in tests of ten prototypes, one of which crashed. Some critics believe that the Cheyenne was a classic example of "brochuremanship"-the practice of selling the Pentagon on a new weapons system even before the contractor is reasonably certain that it can perform to specifications. Lockheed's Chairman Daniel Haughton protested last week that the Cheyenne...
When a recovery helicopter descended to lower the cagelike sling used to lift the astronauts aboard, the draft from its rotor whipped the ocean swells and pushed the floating spacecraft and attached rafts away. Again and again, as NASA the helicopter made passes, frogmen reached for and missed the dangling cage...
...liners afloat. Still, the Queen's problems seemed most unusual. First, there was technical trouble. British engineers developed steam-turbine engines 72 years ago, but the steam turbines on the Queen went awry. The casings did not allow enough room for normal heat expansion of the 10-ft. rotor blades, and the engines were thrown out of balance. As a result, speeds had to be cut from a normal 28½ knots to 14 knots. Sometimes they dropped as low as one knot...
...Ways. To avoid the difficulties that beset the first generation of Au-togiros, J-2's Designer Drago Jovanovich took advantage of modern helicopter technology, effecting many improvements in the control and design of the overhead rotor. The J-2's rotor is stronger but also lighter and smaller than previous rotors, enabling it to be run up to speed faster. When heavier rotors used in the 1930s were al lowed to slow down, their inertia prevented them from being revved up quickly, causing control problems...
...young towheaded boy with bubble gum bulging his cheeks, swiveled the M-60 machine gun into position and squeezed off a perfect burst into one of the huts. "That's the way, Jeff!" cheered the lad's buddy, above the whoppa-whoppa-whoppa din of the rotor blades. "Now hit that bridge...