Control of Double-Delta-Wing Vortex by Micro Leading-Edge Flap

2007 ◽  
Author(s):  
Myong Hwan Sohn ◽  
Hyoung Seog Chung ◽  
Jo Won Chang
Keyword(s):  
Delta Wing ◽  
Leading Edge ◽  
Double Delta Wing

Effect of leading edge shapes on 81°/45° double-delta wing at low speeds

2017 ◽  
Vol 232 (16) ◽  
pp. 3100-3107 ◽  
Author(s):  
B Ashwin Kumar ◽  
P Kumar ◽  
S Das ◽  
JK Prasad
Keyword(s):  
Reasonable Agreement ◽  
Strong Influence ◽  
Delta Wing ◽  
Leading Edge ◽  
Aerodynamic Performance ◽  
Surface Flow ◽  
The Body ◽  
Freestream Velocity ◽  
Flow Visualizations ◽  
Double Delta Wing

Investigations were performed on an 81°/45° sweep double-delta wing at a freestream velocity of 20 m/s. Experiments consisted of the measurement of forces, static pressures, and surface flow visualizations. Effect of the leading edge shapes of the double-delta wing was studied. Results indicated a strong influence of the leading edge shape on the aerodynamic performance of the body. The increase in the bluntness of the leading edge augments the suction pressure and delays the vortex lift phenomena at higher angles of attack, which in turn enhances the lift over the wing. A reasonable agreement between the experiments and computations were observed.

Diamond, cropped, delta, and double-delta wing vortex breakdown during dynamic pitching

AIAA Journal ◽  
1997 ◽  
Vol 35 ◽  
pp. 567-569
Author(s):  
Roy Y. Myose ◽  
Boon-Kiat Lee ◽  
Shigeo Hayashibara ◽  
L. S. Miller
Keyword(s):  
Vortex Breakdown ◽  
Delta Wing ◽  
Double Delta Wing

Effects of Various Shape Fillets on a 76/40 Double Delta Wing from Mach 0.18 to 0.7

1994 ◽  
Author(s):  
Hugo Gonzalez ◽  
Gary Erickson ◽  
Blair McLachlan ◽  
James Bell
Keyword(s):  
Delta Wing ◽  
Double Delta Wing

Separated Flow Past a Slender Delta Wing at Incidence

1973 ◽  
Vol 24 (2) ◽  
pp. 120-128 ◽  
Author(s):  
J E Barsby
Keyword(s):  
Delta Wing ◽  
Separated Flow ◽  
Leading Edge ◽  
Vortex Sheet ◽  
Simultaneous Equations ◽  
Delta Wings ◽  
Nested Iteration ◽  
Finite Difference Technique ◽  
Flow Past ◽  
Vortex Systems

SummarySolutions to the problem of separated flow past slender delta wings for moderate values of a suitably defined incidence parameter have been calculated by Smith, using a vortex sheet model. By increasing the accuracy of the finite-difference technique, and by replacing Smith’s original nested iteration procedure, to solve the non-linear simultaneous equations that arise, by a Newton’s method, it is possible to extend the range of the incidence parameter over which solutions can be obtained. Furthermore for sufficiently small values of the incidence parameter, new and unexpected results in the form of vortex systems that originate inboard from the leading edge have been discovered. These new solutions are the only solutions, to the author’s knowledge, of a vortex sheet leaving a smooth surface.Interest has centred upon the shape of the finite vortex sheet, the position of the isolated vortex, and the lift, and variations of these quantities are shown as functions of the incidence parameter. Although no experimental evidence is available, comparisons are made with the simpler Brown and Michael model in which all the vorticity is assumed to be concentrated onto an isolated line vortex. Agreement between these two models becomes very close as the value of the incidence parameter is reduced.

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