Fuzzy Optimization of the Geometrical Parameters of Fighter Inlet
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摘要: 重点研究二维两波系超音速外压式两侧/侧腹进气道的进口几何参数的气动力/隐身一体化优化设计,主要考虑进气道的压缩板角、唇口斜切角、罩唇位置角、进口宽度、进口宽高比等进口几何参数所决定的一些气动力性能,如总压恢复系数,超音速溢流附加阻力系数及电磁散射机理如压缩楔板的表面散射、楔板及唇口的边缘绕射,采用基于目标满意度和约束满足度的模糊优化模型,进行了优化计算.
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关键词:
- 进气道 /
- 多目标规划 /
- 模糊规划论 /
- 气动与隐身一体化设计
Abstract: For two-dimensional, two-shock, all-external compression, supersonic, cheek-type inlet, the integrated aerodynamic-stealth design of geometrical parameters, such as width, ratio of width and height, angle of vertical compressing ramp, two cutting bevels of the lip plane and lip-position-angle, was investigated by considering those objectives such as the total pressure recovery coefficient, additional drag coefficient of supersonic overflow and the RCS(Radar Cross Section). The formulae for calculating the total pressure recovery coefficient, additional drag coefficient of supersonic overflow were derived. The satisfactory functions of the objectives and the restrictions were given, and then ,based on these functions, the multiobjective fuzzy optimization model was established. -
1. 陈大光,张 津.飞机-发动机性能匹配与优化.北京:北京航空航天大学出版社,1990 2. 赵鹤书.飞机进气道气动原理.北京:国防工业出版社,1989 3. 陈再新.空气动力学.北京:航空工业出版社,1993 4. 克拉特 E F著.雷达散射截面——预估、测量和减缩.阮颖铮 译.北京:电子工业出版社,1988
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