Impact of Aerodynamic Interactions on Aeroelastic Stability of Wing-Propeller Systems

被引:1
|
作者
Boehnisch, Nils [1 ,2 ]
Braun, Carsten [1 ]
Marzocca, Pier [2 ]
Muscarello, Vincenzo [2 ]
机构
[1] FH Aachen Univ Appl Sci, Fac Aerosp Engn, D-52064 Aachen, Germany
[2] RMIT Univ, Dept Aerosp Engn, Melbourne, Vic 3082, Australia
来源
APPLIED SCIENCES-BASEL | 2024年 / 14卷 / 19期
关键词
aeroelasticity; whirl flutter; aerodynamic interactions; vortex particle method; multibody dynamics;
D O I
10.3390/app14198709
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
This paper presents initial findings from aeroelastic studies conducted on a wing-propeller model, aimed at evaluating the impact of aerodynamic interactions on wing flutter mechanisms and overall aeroelastic performance. The flutter onset is assessed using a frequency-domain method. Mid-fidelity tools based on the time-domain approach are then exploited to account for the complex aerodynamic interaction between the propeller and the wing. Specifically, the open-source software DUST and MBDyn are leveraged for this purpose. The investigation covers both windmilling and thrusting conditions. During the trim process, adjustments to the collective pitch of the blades are made to ensure consistency across operational points. Time histories are then analyzed to pinpoint flutter onset, and corresponding frequencies and damping ratios are identified. The results reveal a marginal destabilizing effect of aerodynamic interaction on flutter speed, approximately 5%. Notably, the thrusting condition demonstrates a greater destabilizing influence compared to the windmilling case. These comprehensive findings enhance the understanding of the aerodynamic behavior of such systems and offer valuable insights for early design predictions and the development of streamlined models for future endeavors.
引用
收藏
页数:17
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