Science: Jet Vortex

The intake of a jet engine is like an unimaginably powerful vacuum cleaner, can snatch surprisingly heavy things right off the runway. Pliers, wrenches, cigarette lighters, coins and nails have all been found in jet innards, and even the least of these can sometimes do serious damage. So far, no jet airliner has suffered engine failure from this cause, but one such disaster would be too many.

Last week Ryan Reporter, house organ of Ryan Aeronautical Co., reported a solution worked out by the Douglas Aircraft Co. for use on the new DC-8 Jetliner. Loose objects on the ground are not inhaled...

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