Multi-speed transmission to control variable APU speed and constant generator output frequency
US11808211B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 2022 |
| Grant date | Nov 7, 2023 |
| Priority date | — |
| Expiry date | Apr 8, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2270/02
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An aircraft power system includes an auxiliary power unit (APU), a transmission unit, and a generator. The APU is configured to output a first APU rotational power in response to determining a first condition and a second APU rotational power in response to a determining a second condition. The transmission unit is configured to receive the first APU rotational output power from the APU. The transmission unit outputs a transmission rotational power based on the first APU rotational output power and outputs the transmission rotational power based on the second APU rotational output power. The generator receives the transmission rotational power and produces an alternating current (AC) voltage having a target frequency based on the transmission rotational power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.