Bowed rotor start using a variable position starter valve
US10125691B2 · kind B2 · utility
13Cited by
72References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2016 |
| Grant date | Nov 13, 2018 |
| Priority date | — |
| Expiry date | Oct 1, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A bowed rotor start mitigation system for a gas turbine engine is provided. The bowed rotor start mitigation system includes a variable position starter valve and a controller. The controller is operable to dynamically adjust the variable position starter valve to deliver a starter air supply to a starter to drive rotation of a starting spool of the gas turbine engine according to a dry motoring profile that continuously varies a rotor speed of the starting spool up to a point below a critical rotor speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.