Systems and methods for controlling noise in aircraft powered by hybrid-electric gas turbine engines
US11698032B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 6, 2022 |
| Grant date | Jul 11, 2023 |
| Priority date | — |
| Expiry date | May 6, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method for controlling noise emitted by a hybrid-electric gas turbine engine for an aircraft during a takeoff flight condition includes applying a first total rotational force to a shaft with a turbine and an electric motor. The first total rotational force includes a first electric rotational force applied by the electric motor and a first thermal rotational force applied by the turbine. The first total rotational force has a first rotational force ratio of the first electric rotational force to the first thermal rotational force. The method further includes controlling the noise emitted by the gas turbine engine by reducing the first rotational force ratio from an initial rotational force ratio of the rotational force ratio as an altitude of the aircraft increases and maintaining the first total rotational force substantially constant while reducing the rotational force ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.