| 凹半球降落伞模型起动载荷的研究 |
| |
| 引用本文： | 周民选,连淇祥.凹半球降落伞模型起动载荷的研究[J].航空学报,1991,12(6):217-222. |
| |
| 作者姓名： | 周民选 连淇祥 |
| |
| 作者单位： | 南京宏光空降装备厂
(周民选)，北京航空航天大学(连淇祥) |
| |
| 摘 要： | 在用氢泡法观测凹半球降落伞模型的流场时,我们还用单分力应变天平对其进行了阻力测量。通过测量及理论分析,得出加速起动期间最大阻力F_(max)和附加质量引起的力F_a之比与无量纲参数U_(max)~2/ad之间的关系。此外,还研究了与最大阻力有联系的一些流动现象。该试验有助于深入了解降落伞的动稳定性与开伞动载方面的内在联系。
|
| 关 键 词： | 降落伞 非定常流 阻力 测量 |
THE INVESTIGATION OF THE DRAG FORCE OF THE RIGID HOLLOW HEMISPHERICAL PARACHUTE MODELS IN THE STARTING FLOW |
| |
| Hongguang Aero-dropping Equipment Factory of NanjingZhou MinxuanBeijing University of Aeronautics and Astronautics Lian Qixiang.THE INVESTIGATION OF THE DRAG FORCE OF THE RIGID HOLLOW HEMISPHERICAL PARACHUTE MODELS IN THE STARTING FLOW[J].Acta Aeronautica et Astronautica Sinica,1991,12(6):217-222. |
| |
| Authors: | Hongguang Aero-dropping Equipment Factory of NanjingZhou MinxuanBeijing University of Aeronautics and Astronautics Lian Qixiang |
| |
| Institution: | Hongguang Aero-dropping Equipment Factory of NanjingZhou MinxuanBeijing University of Aeronautics and Astronautics Lian Qixiang |
| |
| Abstract: | The drag of hollow hemispherical parachute models is measured by an one-component strain gauge balance, while the flow field is investigated by the hydrogen bubble technique. Based on the measures and the theoretical analysis, the relationship between the ratio of maximum drag Fmax to force Fa caused by added mass during uniform accelerations and nbn-dimensional parameter Umax2/ad is obtained. In addition the flowfield phenomena related to maximum drag is studied in the paper. The experiments will be helpful to realize the internal relation between the dynamic stability of parachute and the opening shock. |
| |
| Keywords: | parachutes unsteady flow drag measurement |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《航空学报》浏览原始摘要信息 |
| 点击此处可从《航空学报》下载免费的PDF全文 |
