Multifunction power system for an aircraft
US4684081A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 11, 1986 |
| Grant date | Aug 4, 1987 |
| Priority date | — |
| Expiry date | Jun 11, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S62/05
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The multifunction power system is a combination auxiliary power unit, environmental control system, engine start system, and emergency power system for an aircraft. The system is essentially a four-wheel auxiliary power unit comprising two compressors driven by one turbine by means of a common shaft and in addition a free turbine. The pressurized flow from the second compressor can be directed to parallel combustors and thereafter to the two turbines. A starter-generator and motor are coupled to the compressor drive shaft and the free turbine is used to power a generator and for engine starting. Ducts, heat exchangers, valves, etc., are so arranged as to provide the four functions by proper selection and routing of air.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.