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Mission-based Optimal Morphing Parameters for Rotors with Combined Chord and Twist Morphing

Majeti, Rohin Kumar and Benz, Stephan (2019) Mission-based Optimal Morphing Parameters for Rotors with Combined Chord and Twist Morphing. In: 8th Asian/Rotorcraft Forum. Asian/Australian Rotorcraft Forum 2019, 30. Okt. - 02. Nov., Ankara, Türkei.

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Abstract

Two different helicopter rotor morphing concepts – namely, the linearly variable chord extension and the Shape Memory Alloy (SMA) based twist - under the framework of the European project SABRE are investigated for their optimal geometric parameters using a Particle Swarm Optimization (PSO) algorithm. Since the morphing parameters are dependent on the mission profile, three different missions representing typical helicopter applications are chosen. The optimization problem is posed both as single objective (power) and as multi-objective (power, tip elastic torsion and vibratory hub load). Based on the insights drawn from these investigations, a rotor is set up including both the morphing concepts in a single blade. The rotor with combined chord and twist morphing is shown to have better performance than the baseline blade while keeping the penalty on the elastic torsion and vibration to a minimum.

Item URL in elib:https://elib.dlr.de/131500/
Document Type:Conference or Workshop Item (Speech)
Title:Mission-based Optimal Morphing Parameters for Rotors with Combined Chord and Twist Morphing
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Majeti, Rohin KumarRohin.Majeti (at) dlr.dehttps://orcid.org/0000-0003-0634-8051
Benz, Stephanstephanbenz92 (at) googlemail.comUNSPECIFIED
Date:30 October 2019
Journal or Publication Title:8th Asian/Rotorcraft Forum
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Optimization, Particle Swarm Optimization, Helicopter Rotor, Morphing
Event Title:Asian/Australian Rotorcraft Forum 2019
Event Location:Ankara, Türkei
Event Type:international Conference
Event Dates:30. Okt. - 02. Nov.
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 Innovative Rotorcraft
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > Rotorcraft
Deposited By: Majeti, Rohin Kumar
Deposited On:10 Jan 2020 17:30
Last Modified:10 Jan 2020 17:30

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