| タイトル | Design, Fabrication and Testing of a Crushable Energy Absorber for a Passive Earth Entry Vehicle |
| 本文（外部サイト） | http://hdl.handle.net/2060/20020051120 |
| 著者（英） | Kellas, Sotiris; Corliss, James M. |
| 著者所属（英） | Veridian Systems Div. |
| 発行日 | 2002-04-01 |
| 言語 | eng |
| 内容記述 | A conceptual study was performed to investigate the impact response of a crushable energy absorber for a passive Earth entry vehicle. The spherical energy-absorbing concept consisted of a foam-filled composite cellular structure capable of omni-directional impact-load attenuation as well as penetration resistance. Five composite cellular samples of hemispherical geometry were fabricated and tested dynamically with impact speeds varying from 30 to 42 meters per second. Theoretical crush load predictions were obtained with the aid of a generalized theory which accounts for the energy dissipated during the folding deformation of the cell-walls. Excellent correlation was obtained between theoretical predictions and experimental tests on characteristic cell-web intersections. Good correlation of theory with experiment was also found to exist for the more complex spherical cellular structures. All preliminary design requirements were met by the cellular structure concept, which exhibited a near-ideal sustained crush-load and approximately 90% crush stroke. |
| NASA分類 | Launch Vehicles and Launch Operations |
| レポートNO | NAS 1.26:211425
NASA/CR-2002-211425 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/91556 |
