| タイトル | Evaluation of Thermal Protection Tile Transmissibility for Ground Vibration Test |
| 本文（外部サイト） | http://hdl.handle.net/2060/20050111523 |
| 著者（英） | Lo, Wenso; Towner, Robert; Chung, Y. T.; Fowler, Samuel B. |
| 著者所属（英） | NASA Marshall Space Flight Center; Boeing Co. |
| 発行日 | 2005-01-01 |
| 言語 | eng |
| 内容記述 | Transmissibility analyses and tests were conducted on a composite panel with thermal protection system foams to evaluate the quality of the measured frequency response functions. Both the analysis and the test results indicate that the vehicle dynamic responses are fully transmitted to the accelerometers mounted on the thermal protection system in the normal direction below a certain frequency. In addition, the in-plane motions of the accelerometer mounted on the top surface of the thermal protection system behave more actively than those on the composite panel due to the geometric offset of the accelerometer from the panel in the test set-up. The transmissibility tests and analyses show that the frequency response functions measured from the accelerometers mounted on the TPS will provide accurate vehicle responses below 120 Hz for frequency and mode shape identification. By confirming that accurate dynamic responses below a given frequency can be obtained, this study increases the confidence needed for conducting the modal testing, model correlation, and model updating for a vehicle installed with TPS. ' |
| NASA分類 | Aircraft Stability and Control |
| 権利 | Copyright, Distribution as joint owner in the copyright |
