x planes is a blog about "experimental aircraft. exotic aeromachines. oddities. sleek silver cigars. pedal-o-trons. soviet hive-mind bombers. aerial joy. the olden days. action shots. propaganda posters."

The Gyrodyne Model GCA-55 single-seat ground cushion vehicle of the annular jet type, powered by a 72 h.p. Porsche four-cylinder engine. It was developed under a U.S. Navy Bureau of Aeronautics contract and flew for the first time in October, 1959.

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