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Applying Multi-Objective Variable-Fidelity Optimization Techniques to Industrial Scale Rotors: Blade Designs for CleanSky

Wilke, Gunther (2015) Applying Multi-Objective Variable-Fidelity Optimization Techniques to Industrial Scale Rotors: Blade Designs for CleanSky. In: Applying Multi-Objective Variable-Fidelity Optimization Techniques to Industrial Scale Rotors: Blade Designs for CleanSky. 41st European Rotorcraft Forum, 1-4 Sep 2015, Munich, Germany.

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Abstract

A novel variable-fidelity multi-objective optimization technique is applied to the design problem of helicopter rotorblades of the Green RotorCraft research programme of CleanSky. The optimization technique utilizes information from aerodynamic low-fidelity tools, here a prescribed wake model in forward flight and inviscid CFD simulations in hover, to speed-up the high-fidelity optimization, which is based on RANS simulations including all five-rotor blades. In reference to a state-of-the-art single-fidelity optimization, this approach finds about 325% more viable data points. A choice of three rotorblades from the final Pareto frontier of the optimization is investigated in detail including the off-design performance as well as acoustic footprint in an overflight condition. The final outcome is that there does not exist one blade that fully satisfies all criteria at once, but feasible trade-offs are found when applying the variable-fidelity multi-optimization technique.

Item URL in elib:https://elib.dlr.de/100012/
Document Type:Conference or Workshop Item (Speech)
Title:Applying Multi-Objective Variable-Fidelity Optimization Techniques to Industrial Scale Rotors: Blade Designs for CleanSky
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Wilke, Gunthergunther.wilke (at) dlr.deUNSPECIFIED
Date:3 September 2015
Journal or Publication Title:Applying Multi-Objective Variable-Fidelity Optimization Techniques to Industrial Scale Rotors: Blade Designs for CleanSky
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:aerodynamic rotor optimization, variable fidelity, kriging, multi-objective optimization
Event Title:41st European Rotorcraft Forum
Event Location:Munich, Germany
Event Type:international Conference
Event Dates:1-4 Sep 2015
Organizer:DGLR
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 Aerodynamics and Flow Technology > Helicopters
Deposited By: Wilke, Gunther Andreas
Deposited On:07 Dec 2015 15:09
Last Modified:31 Jul 2019 19:56

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