More electric aircraft starter-generator multi-speed transmission system
US7481062B2 · kind B2 · utility
53Cited by
36References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2005 |
| Grant date | Jan 27, 2009 |
| Priority date | — |
| Expiry date | Jul 5, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/2082
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A turbofan gas turbine propulsion engine includes a multi-speed transmission between the high pressure and low pressure turbines and associated high pressure and low pressure starter-generators. The multi-speed transmission reduces the operating speed range from the low pressure turbine to its associated starter-generator, and is configurable to allow the starter-generator associated with the low pressure turbine to supply starting torque to the engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.