Results of supersonic flutter characteristics of low aspect-ratio flat-plate surfaces.

AIAA Journal ◽  
1967 ◽  
Vol 5 (9) ◽  
pp. 1715-1717 ◽  
Author(s):  
EIICHI NAKAI ◽  
TOSHIRO TAKAGI ◽  
KOJI ISOGAI
Keyword(s):  
Aspect Ratio ◽  
Flat Plate ◽  
Low Aspect Ratio ◽  
Supersonic Flutter

scholarly journals Aeroelastic Behavior of Low Aspect Ratio Metal and Composite Blades

1986 ◽  
Author(s):  
James F. White ◽  
Oddvar O. Bendiksen
Keyword(s):  
Aspect Ratio ◽  
Opposite Effect ◽  
Design Parameters ◽  
Aeroelastic Stability ◽  
Low Aspect Ratio ◽  
Supersonic Flutter ◽  
Type Mode ◽  
The Stability ◽  
Composite Blades ◽  
Plate Type

The aeroelastic stability of titanium and composite blades of low aspect ratio is examined over a range of design parameters, using a Rayleigh-Ritz formulation. The blade modes include a plate-type mode to account for chordwise bending. Chordwise flexibility is found to have a significant effect on the unstalled supersonic flutter of low aspect ratio blades, and also on the stability of tip sections of shrouded fan blades. For blades with a thickness of less than approximately four percent of chord, the chordwise, second bending, and first torsion branches are all unstable at moderately high supersonic Mach numbers. For composite blades, the important structural coupling between bending and torsion cannot be modeled properly unless chordwise bending is accounted for. Typically, aft fiber sweep produces beneficial bending-torsion coupling that is stabilizing, whereas forward fiber sweep has the opposite effect. By using crossed-ply laminate configurations, critical aeroelastic modes can be stabilized.

Withdrawal: Self-Induced Roll Characteristics of Low-Aspect-Ratio Flat-Plate Wings Improved by Sinusoidal Edge

2018 ◽  
Author(s):  
Changfu Cheng ◽  
Tianxiang Hu ◽  
Peiqing Liu ◽  
Zhaosheng Zhang ◽  
Qiulin Qu ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
Flat Plate ◽  
Low Aspect Ratio

Finite element supersonic flutter analysis of low aspect ratio stiffened wing

2012 ◽  
Vol 19 (14) ◽  
pp. 2187-2198
Author(s):  
Shirko Faroughi ◽  
Kramet Malekzadeh ◽  
Ieraje Mirzaee
Keyword(s):  
Finite Element ◽  
Aspect Ratio ◽  
Low Aspect Ratio ◽  
Flutter Analysis ◽  
Supersonic Flutter
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