| タイトル | Common-Path Heterodyne Laser-Induced Thermal Acoustics for Seedless Laser Velocimetry |
| 本文（外部サイト） | http://hdl.handle.net/2060/20020039550 |
| 著者（英） | Bushnell, Dennis M.; Balla, R. Jeffrey; Hart, Roger C.; Herring, G. C. |
| 著者所属（英） | NASA Langley Research Center |
| 発行日 | 2001-12-01 |
| 言語 | eng |
| 内容記述 | We demonstrate the use of a novel technique for the detection of heterodyne laser-induced thermal acoustics signals, which allows the construction of a highly stable seedless laser velocimeter. A common-path configuration is combined with quadrature detection to provide flow direction, greatly improve robustness to misalignment and vibration, and give reliable velocity measurement at low flow velocities. Comparison with Pitot tube measurements in the freestream of a wind tunnel shows root-mean-square errors of 0.67 m/s over the velocity range 0.55 m/s. |
| NASA分類 | Fluid Mechanics and Thermodynamics |
| レポートNO | NAS 1.26:211252
ICASE-2001-37
NASA/CR-2001-211252 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/91767 |
