| 发明名称 |
Method for making measurements of the post-combustion residence time in a gas turbine engine |
| 摘要 |
A system and method of measuring a residence time in a gas-turbine engine is provided, whereby the method includes placing pressure sensors at a combustor entrance and at a turbine exit of the gas-turbine engine and measuring a combustor pressure at the combustor entrance and a turbine exit pressure at the turbine exit. The method further includes computing cross-spectrum functions between a combustor pressure sensor signal from the measured combustor pressure and a turbine exit pressure sensor signal from the measured turbine exit pressure, applying a linear curve fit to the cross-spectrum functions, and computing a post-combustion residence time from the linear curve fit. |
| 申请公布号 |
US9032785(B1) |
申请公布日期 |
2015.05.19 |
| 申请号 |
US201213534870 |
申请日期 |
2012.06.27 |
| 申请人 |
The United States of America as Represented by the Administrator National Aeronautics and Space Administration |
发明人 |
Miles Jeffrey H |
| 分类号 |
F01D21/04;G01M15/14;F01D21/00 |
主分类号 |
F01D21/04 |
| 代理机构 |
|
代理人 |
Earp, III Robert H. |
| 主权项 |
1. A method of measuring a residence time in a gas-turbine engine:
placing a plurality of pressure sensors at a combustor entrance and at a turbine exit of the gas-turbine engine; measuring a combustor pressure at the combustor entrance and a turbine exit pressure at the turbine exit; computing a plurality of cross-spectrum functions between a combustor pressure sensor signal from the measured combustor pressure and a turbine exit pressure sensor signal from the measured turbine exit pressure; applying a linear curve fit to the plurality of cross-spectrum functions; and computing a post-combustion residence time from the linear curve fit. |
| 地址 |
Washington DC US |
