Download Control of the Tiltrotor Aircraft in Hover
Passive flow control (PFC) and active flow control (AFC) techniques are carried out in this paper to reduce the download penalty of the tiltrotor aircraft in hover.To accomplish these goals,a new multi-layer moving-embedded grid technique and an efficient hybrid CFD method are developed to analyze the aerodynamic characteristics of the full-scale aircraft in hovering condition.The parallel acceleration technology is adopted to improve the computing efficiency.Compressible RANS equations with S-A turbulence model are employed in the tiltrotor grid region,and Euler equations are chosen to simulate the transition/background region.After that,a series of 2-D wing sections operating in a vertical flowfield are presented to explore the relative benefits of the means.Then,the analysis of the full-scale XV-15 rotor/wing in download configuration is presented to confirm the guidance provided by results of the wing sections.Finally,identification of the underlying flowfield physics from them provides useful basis for tiltrotor aircraft designing.
Tiltrotor Aircraft Parallel Computing Download Passive Flow Control Active Flow Control
Li Peng Zhao Qi-jun Zhao Guo-qing
National Key Laboratory of Rotorcraft Aeromechanics, Nanjing Jiangsu 210016, China
国际会议
The 8th International Conference of Computational Fluid Dynamics, (ICCFD8)(第八届国际计算流体力学会议)
成都
英文
1-15
2014-07-25（万方平台首次上网日期，不代表论文的发表时间）