Patent ID: 6634861
Filing Date: 2003-10-21
Classification: B64C,B64D,Y10T

Abstract:
A power plant (1) for propeller aircraft, comprising two propulsion devices (5, 6); each propulsion device comprising a respective propeller (7), a respective engine (8) for powering the propeller (7), and a gear transmission (9) interposed between the engine (8) and the propeller (7) and comprising a power input shaft (10) connected directly to said engine (8), and a power output shaft (11) supporting said propeller (7), said power output shaft rotating about a hinge axis (3) substantially perpendicular to the output shaft (11); said gear transmission (9) also comprising a single gear (12) fitted to said output shaft (11) and comprising two opposed sets of teeth (13, 14), a pair of pinions (15, 16), each meshing with a respective said set of teeth (13, 14), and, for each said pinion (15, 16), a single respective gear (19, 20) meshing directly with the gear (19, 20) of the other pinion (15, 16); characterized in that one of said pinions (15, 16) extends coaxially with said hinge axis (3), and is connected to said input shaft (10) by a single pair of gears (21, 22).