Word: rotors
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Dates: during 1970-1979
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...long aluminum blades. When these blades begin turning in the summer breezes off Lake Erie later this month, they should produce as much as 100 kilowatts of electricity, enough to meet the needs of 30 one-family homes. Other projects range from a large eggbeater-shaped rotor being tested by New Mexico's Sandia Laboratories to small sail-driven devices created by such ecology-minded outfits as R. Buckminster Fuller's Windworks in Wisconsin and the food-growing New Alchemy Institute on Cape Cod (TIME, March 17). Long Island's Energetics Nine, Inc., recently started selling wind...
...have to. Inside the airbase, a damaged American helicopter, one skid broken off, lay on the ground, its rotor still spinning. A tremendous explosion rocked our bus as a North Vietnamese 130-mm. shell hit the Air America terminal just across the road. "Don't panic!" shouted our Marine escort...
...diagram). It is the job of one piston to draw in air. The other provides the power; all the explosions in the engine occur within its cylinder. Thus it is the movement of this second piston that actually turns the crankshaft (which passes through both pistons) and the rotor...
...passes a vent in the engine casing and sucks air into its cylinder (1). At exactly the same moment, the other end of the piston is pushing the air that it has already captured and compressed into a passage at the opposite side of the engine casing. As the rotor turns, the air is forced through a transfer port into the cylinder of the power piston (2). Continuing its rotation, the power piston compresses the air even more (3). As the piston's cylinder moves past the fuel injector, the compressed air is mixed with a spray of gasoline...
...vibration-free and weighs much less than conventional engines with equivalent horsepower. Ansdale figures that a 145-h.p. model would be only 27 in. long and 18 in. wide. Finally, the design has a distinction that the Wankel cannot claim: because of the uncomplicated shape of its pistons and rotor, it can be built with familiar piston-engine techniques. In contrast, the Wankel has introduced many new engineering problems...