Results 111 to 120 of about 8,580 (166)

Unsteady Aerodynamics in Bio-Inspired Flapping Wings for Low-Density Environments. [PDF]

Biomimetics (Basel)
Prisăcariu EG, Dumitrescu O, Sima M, Aparece-Scutariu V, Strătilă S, Roșu RA, Cuciumita C, Vlăducă I, Bica S.   +8 more
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Trajectory planning for drone landing, incorporating wind-sensing capabilities, operational and safety objectives, and reinforcement learning. [PDF]

Commun Eng
Xiong H, Li L, Zeng W, Li D, Liu Y, Raps F, Lou Y, Noack BR.   +7 more
europepmc   +1 more source

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Investigation of dynamic stall onset

Aerospace Science and Technology, 2006
Abstract In a 2003 test campaign in the DLR-VAG test stand unsteady pressure distributions during dynamic stall have been measured on a 2D-wing model with OA312 airfoil section. To investigate the effect of transition on dynamic stall onset different tripping devices have been fixed at the leading edge of the model.
Geissler, Wolfgang, Haselmeyer, Hartmut
openaire   +4 more sources

Dynamic stall simulation problems

Guidance, Control and Flight Mechanics Conference, 1970
Dynamic airfoil stall simulation in wind tunnels, considering pitch rate, Reynolds number, oscillation and test equipment ...
LARS E. ERICSSON, J. PETER REDING
openaire   +1 more source

Evaluating Dynamic Stall-Onset Criteria for Mixed and Trailing-Edge Stall

AIAA Journal, 2022
We evaluate two leading-edge-based dynamic stall-onset criteria (namely, the maximum magnitudes of the leading-edge suction parameter and the boundary enstrophy flux) for mixed and trailing-edge stall. These criteria have been shown to successfully predict the onset of leading-edge stall at Reynolds numbers of [Formula: see text], where the leading ...
Sarasija Sudharsan, Shreyas Narsipur, Anupam Sharma   +2 more
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Compressibility effects on dynamic stall

Progress in Aerospace Sciences, 1996
Abstract Dynamic stall delay of flow over airfoils rapidly pitching past the static stall angle has been studied by many scientists. However, the effect of compressibility on this dynamic stall behavior has been less comprehensively studied. This review presents a detailed assessment of research performed on this subject, including a historical ...
Carr, L.W., Chandrasekhara, M.S.
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Influence of Rotation on Dynamic Stall

Journal of the American Helicopter Society, 2013
A computational investigation of the effect of rotation on two-dimensional (2D) deep dynamic stall has been undertaken, showing that the effect of rotation is to reduce the severity of the pitching moment peak and cause earlier reattachment of the flow. A generic single blade rotor geometry was investigated, which had a pitching oscillation around the
Gardner, Anthony Donald, Richter, Kai
openaire   +3 more sources

Dynamic Stall and Aerodynamic Damping

Journal of Solar Energy Engineering, 1998
Riso̸ has developed a dynamic stall model that is used to analyze and reproduce open air blade section measurements as well as wind tunnel measurements. The dynamic stall model takes variations in both angle of attack and flow velocity into account. The paper gives a brief description of the dynamic stall model and presents results from analyses of ...
Flemming Rasmussen, Jorgen Petersen, Helge Madsen   +2 more
openaire   +1 more source

Dynamic stall on a supercritical airfoil

Aerospace Science and Technology, 2005
Summary: For the present investigations of dynamic stall a supercritical airfoil was chosen. This new airfoil designed by DLR will be used in dynamic stall control research activities (project ADASYS) planned for the near future: the leading edge portion of the airfoil will be drooped down dynamically to improve dynamic stall characteristics on the ...
Geißler, W., Dietz, G., Mai, H.
openaire   +3 more sources