This highly significant artifact; a predecessor to the modern variable-pitch propeller, was the first design to employ counterweights. Built for the Liberty engine and DeHavilland DH-4 aircraft, the ...

A metal ground-adjustable propeller was flown earlier by Lindbergh on the Spirit of St. Louis, and was the best available technology, pointing the way toward fully-controllable pitch propellers for ...

The ICON A5 is a revolutionary amphibious light sport aircraft that combines a unique design with advanced safety features, ...