Results 171 to 180 of about 92,283 (210)

Vortex separation above delta leading edges.

Journal of Aircraft, 1967
and that the jet flow would attach at the inlet lip. The inspections of Fig. 4 shows that the round lip, created by the jet flow, extended well inside the inlet lip and restricted the inlet flow area. Thus, the pressure recovery improvements that might have been realized as the result of rounding the lip were offset by higher pressure losses associated
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The compressible inviscid leading-edge vortex

Journal of Fluid Mechanics, 1965
The conically symmetric solution of the Eulerian equations of an incompressible fluid obtained by Hall, thought to be descriptive of flow properties in a leading-edge vortex, is generalized to include the effects of compressibility.
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Trailing edge flap influence on leading edge vortex flap aerodynamics

Journal of Aircraft, 1983
A study has been conducted to explore the effects of trailing edge flaps (TEF) on leading edge vortex flap (LEVF) aerodynamics. A variety of LEVF and TEF configurations were tested on flat plate delta wings with leading edge sweep angles of 60 and 75 deg.
Arthur C. Grantz, J. F. Marchman
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NEW TWISTS IN THE LEADING-EDGE VORTEX

Journal of Experimental Biology, 2004
![Figure][1] Insects aren't airplanes. If they flew like airplanes, they would fall right out of the sky because their wings are much too small. But since they flap their wings, they can generate a `leading-edge vortex', a rotating element of fluid along the front of the wing ...
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Leading-edge vortex development on a pitching flat plate with multiple leading edge geometries

Experimental Thermal and Fluid Science, 2018
Abstract This article investigates the dynamic stall of a pitching flat plate in order to facilitate lift control in applications such as flapping wings and micro-aerial vehicles. Constant-pitch-rate rotation, similar to ramp-and-hold, of a flat plate was investigated in an open-jet wind tunnel using embedded surface pressure sensors to assess vortex
Leknys, R., Arjomandi, M., Kelso, R., Birzer, C.   +3 more
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Three-Dimensional Substructure in a Leading Edge Vortex

41st AIAA Fluid Dynamics Conference and Exhibit, 2011
High pitch rate manoeuvres have been studied in great depth in recent decades, in respect to rotor dynamic stall and, more recently, in understanding bird and insect flight with view to application in biomimetic micro air vehicles (MAVs). The flow topology arising from such unsteady airfoil movement is complex.
Abel-John Buchner, Julio Soria, Damon Honnery   +2 more
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Unsteady behavior of spiral leading-edge vortex breakdown

21st Atmospheric Flight Mechanics Conference, 1996
Unsteady characteristics of the leading-edge vortex breakdown on a 65-deg delta wing are investigated. Emphasis is placed on the longitudinal motion of the breakdown region and its spiral structure under static as well as dynamic conditions as they have an important impact on vehicle flight mechanics and may cause aeroelastic problems. The onset of the
X. Huang, E. Hanff
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On leading edge vortex and its control

16th Atmospheric Flight Mechanics Conference, 1989
A simple model for the leading edge vortex and a postulation for the existence of a critical vorticity concentration above which a stable leading edge vortex cannot be maintained were proposed. Using the model and postulation, various aspects of vortex control by blowing were discussed.
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Control of leading edge vortex breakdown by blowing

26th Aerospace Sciences Meeting, 1988
An investigation into the effects of using a jet of air to control the vortex breakdown position on a 70 degree delta wing is presented. The specific objectives focused on optimizing the blowing positions in terms of maximum lift increments obtained for minimum blowing rates.
K. VISSER, K. IWANSKI, R. NELSON, T. NG
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Leading Edge Vortex Formation on Finite Wings Using Vortex Particles

AIAA Scitech 2021 Forum, 2021
Hugh J. Bird, Kiran Kumar Ramesh, Shuji Otomo, Ignazio Maria Viola   +3 more
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