Gardner, Anthony Donald and Richter, Kai and Neuhaus, Dietmar and Mai, Holger (2012) Experimental control of compressible OA209 dynamic stall by air jets. European Rotorcraft Forum 2012, 2012-09-04 - 2012-09-06, Amsterdam, The Netherlands.
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Official URL: http://erf2012.nlr.nl/index.html
Abstract
The experimental investigation of constant blowing air jets as Fluidic Control Devices (FCDs) for helicopter dynamic stall control is described. A carbon fibre airfoil of constant OA209 cross-section was fitted with a pneumatic system to deliver dry compressed air as jets for flow control at total pressures of up to 10 bar. The experiment used porthole jets of radius 1% chord, positioned at 10% chord and with spacing 6.7% chord. The positive dynamic stall control effects were demonstrated at Mach 0.3, 0.4 and 0.5 for deep dynamic stall test cases with the best test cases reducing the pitching moment peak after the main stall by 84%, while increasing the mean lift over one pitching cycle by 37%. The conclusions from the experiments are supported by 3D URANS computations of the pitching airfoil with flow control using the DLR-TAU code.
Item URL in elib: | https://elib.dlr.de/75092/ | ||||||||||||||||||||
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Document Type: | Conference or Workshop Item (Speech, Paper) | ||||||||||||||||||||
Title: | Experimental control of compressible OA209 dynamic stall by air jets | ||||||||||||||||||||
Authors: |
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Date: | 2012 | ||||||||||||||||||||
Refereed publication: | No | ||||||||||||||||||||
Open Access: | No | ||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||
In SCOPUS: | No | ||||||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||||||
Page Range: | pp. 1-16 | ||||||||||||||||||||
Series Name: | Conference Proceedings on USB-Stick | ||||||||||||||||||||
Status: | Published | ||||||||||||||||||||
Keywords: | Dynamic stall, TWG, jets, FCD, OA209, SIMCOS, TAU | ||||||||||||||||||||
Event Title: | European Rotorcraft Forum 2012 | ||||||||||||||||||||
Event Location: | Amsterdam, The Netherlands | ||||||||||||||||||||
Event Type: | international Conference | ||||||||||||||||||||
Event Start Date: | 4 September 2012 | ||||||||||||||||||||
Event End Date: | 6 September 2012 | ||||||||||||||||||||
Organizer: | Netherlands Association of Aeronautical Engineers (NVvL) | ||||||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||
HGF - Program: | Aeronautics | ||||||||||||||||||||
HGF - Program Themes: | Rotorcraft (old) | ||||||||||||||||||||
DLR - Research area: | Aeronautics | ||||||||||||||||||||
DLR - Program: | L RR - Rotorcraft Research | ||||||||||||||||||||
DLR - Research theme (Project): | L - The Virtual Aerodynamic Rotorcraft (old) | ||||||||||||||||||||
Location: | Köln-Porz , Göttingen | ||||||||||||||||||||
Institutes and Institutions: | Institute of Aerodynamics and Flow Technology > Helicopters Institute of Materials Physics in Space Institute of Aeroelasticity > Aeroelastic Experiments | ||||||||||||||||||||
Deposited By: | Gardner, Dr.habil. Anthony | ||||||||||||||||||||
Deposited On: | 11 Sep 2012 12:32 | ||||||||||||||||||||
Last Modified: | 24 Apr 2024 19:41 |
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