All electric environmental control system for advanced transport aircraft
US4523517A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 13, 1983 |
| Grant date | Jun 18, 1985 |
| Priority date | — |
| Expiry date | May 13, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/50
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The invention is an all electric environmental control system. The primary power for the system is provided in a first embodiment by a compressor (C.sub.1) driven by an electric motor (14). The system includes the primary heat exchanger (16), an expansion cooling system (20), and a water separator (26). The electric motor (14) may be utilized in another embodiment to drive a compressor (23) within the expansion cooling system (20'). A vapor-cycle cooling system including the freon-compressor (34), the condenser (36) and the evaporator (38) may optionally replace the expansion cooling system (20). To compensate for pressure variations during flight, the electric motor (32) is mounted to a planetary gearbox (44) with a "makeup"/"subtract" differential electric motor (42) such that the compressor (C.sub.1) is run at the desired speed. The compressor (C.sub.1) is provided with inlet guide vanes (56) which are controlled by the flow meter (52) and flow logic circuit (54) to provide the desired flow rate of air to the environmental control system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.