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Merging an Analytical Aerodynamic Model for Helicopter Applications with a State-Space Formulation for Unsteady Airfoil Behavior

Mindt, Maximilian (2018) Merging an Analytical Aerodynamic Model for Helicopter Applications with a State-Space Formulation for Unsteady Airfoil Behavior. Deutscher Luft- und Raumfahrtkongress 2018, 04.-06. Sep. 2018, Friedrichshafen, Deutschland.

Full text not available from this repository.

Abstract

A new comprehensive simulation tool for computation of the whole helicopter is currently being developed at the Institute of Flight Systems of DLR. A main requirement of such a tool is the calculation of the aerodynamic forces acting at the blades, including all effects that are typical for helicopter rotor operational conditions, while maintaining small calculation times. Therefore, for the calculation of the rotor blade element aerodynamics, a semi-empirical analytical model is used. A formulation in state-space description was chosen to represent the unsteady circulation lag and the modeling of the noncirculatory force response was also added. The analytical models' formulation of the unsteady viscous effects, i.e. stall delay, was transferred to state-space form as well. The resulting combined model is used for the calculation of steady airfoil data as well as unsteady hysteresis curves for a harmonically oscillating airfoil. The results are compared to CFD data.

Item URL in elib:https://elib.dlr.de/124411/
Document Type:Conference or Workshop Item (Speech)
Title:Merging an Analytical Aerodynamic Model for Helicopter Applications with a State-Space Formulation for Unsteady Airfoil Behavior
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Mindt, MaximilianMaximilian.Mindt (at) dlr.deUNSPECIFIED
Date:4 September 2018
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Hubschrauber, instationäre Aerodynamik
Event Title:Deutscher Luft- und Raumfahrtkongress 2018
Event Location:Friedrichshafen, Deutschland
Event Type:international Conference
Event Dates:04.-06. Sep. 2018
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:rotorcraft
DLR - Research area:Aeronautics
DLR - Program:L RR - Rotorcraft Research
DLR - Research theme (Project):L - The Virtual Aerodynamic Rotorcraft
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > Rotorcraft
Deposited By: Mindt, Maximilian
Deposited On:11 Dec 2018 09:49
Last Modified:11 Dec 2018 09:49

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