Aircraft emergency power unit with battery powered subsystem
US12116141B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2021 |
| Grant date | Oct 15, 2024 |
| Priority date | — |
| Expiry date | Apr 14, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64D2221/00
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An aircraft emergency power unit (EPU) includes a battery powered subsystem that replaces toxic hydrazine fuel use. The battery of the battery powered subsystem is utilized to supply power to an aircraft electrical system in the event of a failure of the EPU turbine-powered generator. The battery of the battery powered subsystem is also utilized to supply power to an electric hydraulic motor pump in the event of a failure of the EPU turbine-powered hydraulic pump (or to augment the output of the EPU-turbine-powered hydraulic pump). The battery of the battery powered subsystem is capable of simultaneously powering the electrical system and the electric hydraulic motor pump or of powering either one of the electrical system and electric hydraulic motor pump independently based upon aircraft fault conditions. Intermittent operation of the electrical system and/or the electric hydraulic motor pump in an intermittent fashion on an as-needed basis is also possible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.