Transmission mechanism between accessories and engine members for driving the rotor of a rotorcraft
US7418888B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 7, 2005 |
| Grant date | Sep 2, 2008 |
| Priority date | — |
| Expiry date | Mar 6, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19647
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A transmission mechanism between at least one accessory and engine members for driving the rotor of a rotorcraft, the transmission therebetween being selectively either in isolation or in combination. An intermediate shaft is interposed between a main drive shaft for the rotor and a secondary drive shaft for the accessory, for driving the accessory from an engine member allocated to driving it. This intermediate shaft engages directly on the main shaft and meshes with an accessory drive gear via freewheels to enable the gear to be driven either by the engine member or from the main shaft in the position for combined drive together with the rotor, the rotor being driven by the other engine member or autorotation in the event of both engine members failing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.