Method for monitoring a thrust fault of an aircraft turbofan
US9897517B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 27, 2013 |
| Grant date | Feb 20, 2018 |
| Priority date | — |
| Expiry date | Oct 13, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2270/44
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for monitoring a thrust fault of a turbofan during a modification of the thrust setting of the turbofan, the method including a step of processing the thrust setting via a filtering function and a transient-phase model such as to obtain a modelled thrust, a step of comparing the modelled thrust to the actual thrust such as to determine a thrust difference, a step of comparing the thrust difference to an alarm threshold; and a step of emitting an alarm in the event of exceeding the alarm threshold, wherein at a given iteration, in which the prior modelled thrust is known, the transient-phase model provides a time constant in accordance with the prior modelled thrust, and the filtering function provides a modelled thrust in accordance with the time constant obtained, the prior modelled thrust and the thrust setting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.