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U.S. Patent Specifications

Aircraft Engineering and Aerospace Technology

ISSN: 0002-2667

Article publication date: 1 December 1943


In a vehicle power plant comprising a pair of coaxial controllable‐pitch propellers and means for rotating said propellers independently in opposite directions, means for holding one of said propellers against rotation, and means for turning the blades of the propeller so held to a pitch position at which aerodynamic forces acting on said propeller during flight tend to turn said propeller in the same direction as the direction of rotation of the other propeller.


(1943), "U.S. Patent Specifications", Aircraft Engineering and Aerospace Technology, Vol. 15 No. 12, pp. 369-370.




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