PRESSURE DISTRIBUTION DURING PARACHUTE OPENING. PHASE 1. INFINITE MASS OPERATING CASE
PRESSURE DISTRIBUTION DURING PARACHUTE OPENING. PHASE 1. INFINITE MASS OPERATING CASE
复制标题
降落伞打开期间的压力分布。
DOI：
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发表时间：
1966
期刊：
影响因子：
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通讯作者：
P. K. Schmidt
中科院分区：
文献类型：
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作者：
H. Melzig;P. K. Schmidt
摘要：对降落伞伞面在充气过程中的压差分布进行了实验研究。在自由飞行试验计划中，使用了圆形平板、10%扩展裙、环缝和带型的全尺寸伞盖，并通过分布在伞盖上的四个压力传感器测量了伞裙到伞孔等距离处的伞戈尔中心线和伞绳线上的压差。为了分析压力分布、伞面投影面积、伞面形状、产生的力和动压之间的关系和依赖性，对每种类型的伞面，这些量都作了时间函数的图形显示。压力分布的测量结果允许更好地理解降落伞充气动态过程的物理本质。只要知道伞面形状，就可以计算出伞面的应力分布。为此，提出了相应的时间为每一个冠层类型的冠层形状的演变。
Abstract : An experimental investigation was conducted to determine the differential pressure distribution over the surface of parachute canopies during the period of inflation under mass conditions. Full scale parachute canopies of the circular flat, 10% extended skirt, ringslot and ribbon types were utilized during the free-flight test program, and differential pressures on the gore centerline and on the cord line were measured by means of four pressure transducers distributed over the canopy in equal distances from the skirt to the vent. In order to analyze the relationships and dependencies between the pressure distribution, projected canopy area, canopy shape, generated force, and dynamic pressure, graphical displays of these quantities were made as a function of time for each type of parachute canopy. The results of the pressure distribution measurements permit a better understanding of the physical nature of the dynamic process of parachute inflation. The stress distribution in a parachute canopy can be calculated if the corresponding canopy shape is known. For this purpose, the evolvement of the canopy shape with the corresponding time is presented for each of the canopy types.