Optimization and Analysis of a Blown Flap Based on a Multielement Airfoil
Optimization and Analysis of a Blown Flap Based on a Multielement Airfoil
- Neue Suche nach: Yuhui, Yin
- Neue Suche nach: Yufei, Zhang
- Neue Suche nach: Yuhui, Yin
- Neue Suche nach: Yufei, Zhang
The present study proposes a new configuration of an internally blown flap based on a multielement airfoil for the high-lift system of an amphibious aircraft. Triobjective optimization based on computational fluid dynamics is carried out. The optimization results show that the present configurations have efficient lift enhancement and reach the tradeoff of the lift to drag ratio and low angle-of-attack performance. The optimized configuration also has good stall behavior and better poststall performance. A parametric analysis is conducted to test the sensitivity of each design parameter, and the results prove the robustness of the configuration. The results of different jet momentum coefficients show that two critical values exist that separate the lift versus jet momentum curve into three segments corresponding to different flow phenomena, which indicates that the circulation control rule for a multielement airfoil with a blown flap is different and more complicated.
Dokumentinformationen
Optimization and Analysis of a Blown Flap Based on a Multielement Airfoil
Journal of Aircraft ; 57 , 1 ; 62-75
2019-09-30
14 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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