Power plant for propeller aircraft
AssigneeFiatavio S.p.A.
InventorPaolo Altamura
Life of this patent
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Abstract
A power plant for propeller aircraft has two propulsion devices, each having a propeller, an engine for powering the propeller, and a gear transmission interposed between the engine and the propeller. The transmission has a power input shaft connected directly to the engine, and a power output shaft supporting the propeller and rotated with respect to the input shaft about a hinge axis perpendicular to the output shaft. The gear transmission also has a single gear fitted to the output shaft and having two opposed sets of teeth meshing with a pair of pinions. One of the pinions extends coaxially with the hinge axis, and is connected to the input shaft by a single pair of gears.
Claims7
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).
Dependencies are inferred from the claim text.