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未来超声速飞行器需要耐高温、动态密封,用于可移动壁板、舱门、襟副翼等结构。目前的密封技术并不能满足应用要求,一种新型先进的陶瓷栅板式密封因其具有耐高温、柔韧性、低渗透性、耐久性等优点正显示出极大的发展空间。然而很多因素影响着栅板式密封的渗透率,如:栅板的高度公差、栅板与沟槽之间长度和宽度方向的间隙等,本文主要介绍美国航空航天局开展的栅板式密封渗透率试验,总结出渗透率最低的栅板安装参数组合,研究在该参数组合下不同栅板几何形状尺寸对密封渗透率的影响,对国内刚起步的热密封技术研究和密封组件研制有一定的参考价值和借鉴意义。
Future supersonic aircraft require high temperature, dynamic seal for removable siding, doors, flaperons and other structures. The current sealing technology does not meet the application requirements, a new advanced ceramic grid seal because of its high temperature, flexibility, low permeability, durability and other advantages are showing great room for development. However, many factors affect the permeability of the grid seal, such as the height tolerance of the grid, the gap between the grid and the trench in the length and width directions, etc. This paper mainly introduces the Grid Seal Penetration Test conducted by NASA , Summed up the lowest permeability of the combination of grid installation parameters to study the geometric parameters of different grid under the combination of parameters on the permeability of the seal on the domestic first step heat sealing technology research and development of seal components have some reference value And reference.