TY - JOUR AB - In a vehicle power plant comprising a pair of coaxial controllableā€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. VL - 15 IS - 12 SN - 0002-2667 DO - 10.1108/eb031081 UR - https://doi.org/10.1108/eb031081 PY - 1943 Y1 - 1943/01/01 TI - U.S. Patent Specifications T2 - Aircraft Engineering and Aerospace Technology PB - MCB UP Ltd SP - 369 EP - 370 Y2 - 2024/03/29 ER -