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应用气动力修正技术的静气动弹性发散计算
  • 期刊名称:北京航空航天大学学报, 2007, 33(10): 1146~1149.
  • 时间:0
  • 分类:V211.47[航空宇航科学与技术—航空宇航推进理论与工程;航空宇航科学技术]
  • 作者机构:[1]北京航空航天大学航空科学与工程学院,北京100083
  • 相关基金:国家自然科学基金资助项目(10432040,10502003);新世纪优秀人才计划资助项目(NCET-04-0170)
  • 相关项目:新一代空、天飞行器的流固耦合动力学问题研究
中文摘要:

将气动力修正技术应用于静气动弹性发散计算与分析中.根据三维翼面定常气动压力分布数据,获取压力修正因子以及下洗修正因子,对基于平面偶极子格网法的定常气动力影响系数矩阵进行压力修正和下洗修正,并采用模态法对某翼面进行静气动弹性发散的计算.结果表明:由于三维翼面定常气动压力分布的气动力中心与偶极子格网法的气动力中心相比更靠近前缘,因此压力修正和下洗修正后的翼面发散速度较修正前均有所降低.

英文摘要:

The correction techniques of aerodynamic forces were introduced in the computation and analysis of static aeroelastic divergence. According to steady pressure distribution data on a three dimensional wing, the correction factors to pressure and downwash were obtained and the steady aerodynamic influence matrix based on planar double lattice method was corrected. The divergence speed of the wing was calculated using the mode method. The results show the divergence speeds of the wing after pressure correction and downwash correction are both lower than that before, due to the aerodynamic center of steady pressure distribution on the three dimensional being closer to the leading edge than that of planar double lattice method.

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