Investigation of the variable camber continuous trailing edge flap on the aerodynamic performance of the supercritical airfoil

2017 ◽  
Author(s):  
Tongbiao Guo ◽  
Junqiang Bai ◽  
Tihao Yang
Keyword(s):  
Aerodynamic Performance ◽  
Trailing Edge ◽  
Supercritical Airfoil ◽  
Trailing Edge Flap

Influence of Flap Deflection Angle on Wind Turbine Airfoil with Trailing Edge Flaps

2014 ◽  
Vol 977 ◽  
pp. 222-227
Author(s):  
Ya Lei Jia ◽  
Zhong He Han ◽  
Fu You Li ◽  
Ya Kai Bai ◽  
Ji Xuan Wang
Keyword(s):  
Wind Turbine ◽  
Deflection Angle ◽  
Aerodynamic Performance ◽  
Main Body ◽  
Trailing Edge ◽  
Trailing Edge Flaps ◽  
Wind Turbine Airfoil ◽  
Trailing Edge Flap ◽  
Flap Deflection ◽  
Drag Ratio

To improve the ability of capturing the wind energy of wind turbine and shorten the design period is of great importance to designing wind turbine blade. The article established S809 airfoil model with trailing edge flaps, The gap of the frontal subject and trailing edge flap adopt uniform gap structure, this structure will reduce the influence of the gap on aerodynamic characteristics.Using the k-ω Two equation turbulence model , the article calculated aerodynamic performance of S809 with 10% chord length trailing edge flaps under different deflecting angles. Results show that gap between the main body and trailing edge flap has little effect on airfoil aerodynamic performance, however, the deflection Angle of Trailing edge flap have great affect on airfoil aerodynamic performance, when deflection Angle of trailing edge flap is 14 ° degrees ,the lift-to-drag ratio is the largest.

scholarly journals Aerodynamic performance analysis of a trailing-edge flap for wind turbines

2018 ◽  
Vol 1037 ◽  
pp. 022020 ◽  
Author(s):  
Xu Bofeng ◽  
Feng Junheng ◽  
Li Qing ◽  
Xu Chang ◽  
Zhao Zhenzhou ◽  
...  
Keyword(s):  
Performance Analysis ◽  
Wind Turbines ◽  
Aerodynamic Performance ◽  
Trailing Edge ◽  
Trailing Edge Flap

Effect of 90 Degree Flap on the Aerodynamics of a Two-Element Airfoil

1989 ◽  
Vol 111 (1) ◽  
pp. 93-94 ◽  
Author(s):  
J. Katz ◽  
R. Largman
Keyword(s):  
Lift Coefficient ◽  
Aerodynamic Performance ◽  
Trailing Edge ◽  
Wide Range ◽  
Trailing Edge Flap ◽  
Drag Ratio

The aerodynamic performance of a two-element airfoil with a 90 deg. trailing edge flap was experimentally investigated. The 5 percent-chord long flap, significantly increased the lift of the baseline airfoil, throughout a wide range of angles of attack. The maximum lift coefficient of the flapped wing increased too, whereas the lift/drag ratio decreased.

Performance enhancement evaluation of an actuated trailing edge flap

2001 ◽  
Vol 105 (1049) ◽  
pp. 391-399 ◽  
Author(s):  
W. Chan ◽  
A. Brocklehurst
Keyword(s):  
Adverse Effect ◽  
Performance Enhancement ◽  
Optimal Configuration ◽  
Analytical Evaluation ◽  
Trailing Edge ◽  
Design Constraints ◽  
Flight Condition ◽  
Trailing Edge Flap

Abstract An analytical evaluation of the performance enhancement due to a servo-actuated trailing edge flap was carried out using the coupled rotor-fuselage model (CRFM). The performance enhancement from a trailing edge flap is achieved by introducing effective camber around the azimuth for a nominal aerofoil. An investigation on the best combination of flap parameters, namely the span, position, chord and deflection was carried out in order to identify an optimal configuration within given design constraints. The effects on vibratory control loads over a range of speed for a flap of 10% span, 20% chord, actuated at once per rev has expanded the retreating blade envelope for a Lynx aircraft by some 20kt. The flap hinge load was also examined and it was found not to be excessive. It was also confirmed that an actuated trailing edge flap does not have adverse effect on the pilot's control inputs to trim to a particular flight condition. This paper will discuss the aerodynamic enhancements derived from the application of the trailing edge flap and present conclusions drawn from this study.

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