AERONAUTICS: Fighting Noise

To pilots, passengers, increasingly to groundlings, is airplane noise a plague.

To military airmen it is a serious limitation on operations, an absolute barrier to surprise maneuvers. Uncounted attempts have been made to silence the roaring engines—the latest last week at Roosevelt Field, L. I. by a Miss El Dorado Jones, of Manhattan, formerly of Moline, Ill.

Puffing upon one cigaret after another, Miss Jones directed mechanics in attaching to the Cirrus engine of a Moth biplane a muffler of her own invention. As the plane sped along the runway and over the hangars...

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