Word: bladed
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...they found pieces of the plane's tail surfaces. Almost certainly they had been torn off in flight. What had shorn them off? CAB inspectors were not yet ready to say at week's end. Many an airplane pilot guessed that a propeller had failed, that a blade had hurtled back and cut into the tail surfaces. This theory had to be discarded when all the DC-4's propeller blades were found in the wreckage. CAB's crash detectives settled down to a longer search for the answer...
...helicopter can "throw" a rotor blade, with immediately disastrous results. (This may have been what happened at Seattle and Providence.) The small tail rotor can and sometimes does come off, or get damaged. Engine failure by itself is not too serious, since a helicopter with a dead rotor acts like an autogiro and windmills down to earth...
...with a wind-reddened face underlined by a thick white towel around his neck, steps from a launch, calls the day's offender aside, and with gestures explains in a gentle, English-tinged voice, "Now, this is the surface of the water, and my palm, here, is the blade of the oar . . ." The boyish enthusiasm over crew and Bert Haines among the men he has handled in 27 Harvard seasons indicates that in him the College has something very much like a genius at work...
...been developing in Seattle. It is a helicopter* stripped to essentials: little more than a seat, landing wheels and two horizontal rotors revolving in opposite directions. The power source is a 35 h.p. engine with two opposed cylinders like an outboard motor. According to Mr. Pentecost, "the required blade adjustments to render typical three dimensional helicopter flight have been coordinated into a single control handle placed conveniently in front of the operator...
...less eye-catching than these marvels were some of the new postwar gardening tools and gadgets which were finally being produced in quantity. The fanciest was a four-wheeled, gasoline-driven lawn mower with a unique rotary blade-it worked something like a floor-waxer. Price: $179.50. Runners-up were an electric hedge clipper ($44.50) and a flamethrower for killing weeds and soil bacteria ($23.50). Much postwar equipment was made of light-weight metals; there were a rubber-tired magnesium wheelbarrow (16 Ibs., $34.50), and an aluminum rake ($5). Neater still, there was a garden hose made of amber-colored...