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Localized Blade-Root IBC for Rotor-Performance Enhancement and Vibration Reduction

Küfmann, Philip and Bartels, Rainer and van der Wall, Berend G. (2014) Localized Blade-Root IBC for Rotor-Performance Enhancement and Vibration Reduction. In: 40th European Rotorcraft Forum. 40th European Rotorcraft Forum, 2.-5. Sep. 2014, Southampton, UK.

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This paper focuses on numerical investigations of the effects of non-harmonic Individual Blade Control (IBC) or Localized Pitch Control (LPC). Different non-harmonic control schemes for the blade-root pitch are presented, optimized for performance enhancement as well as simultaneous vibration reduction and compared to a conventional approach using 2/rev Higher Harmonic Control (HHC). The calculations were performed using the DLR’s comprehensive rotor code S4, simulating two different isolated model rotors at an advance ratio of μ=0.32 with a modified Beddoes inflow model and including rotor-fuselage interaction. In simulations with Bo-105 model rotor blades, LPC was found to perform superior to conventional 2/rev HHC, with reductions in required power of up to -3.62% (-2.26% in power and -57.3% in vibration levels during multi-objective optimization). However, when applied to a more modern rotor blade the margins for power savings as well as vibration reduction were found to be significantly lower.

Item URL in elib:https://elib.dlr.de/94330/
Document Type:Conference or Workshop Item (Speech)
Title:Localized Blade-Root IBC for Rotor-Performance Enhancement and Vibration Reduction
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
van der Wall, Berend G.FT-HUBUNSPECIFIED
Date:September 2014
Journal or Publication Title:40th European Rotorcraft Forum
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Active Rotor Control, HHC, LPC, Performance enhancement, Vibration reduction
Event Title:40th European Rotorcraft Forum
Event Location:Southampton, UK
Event Type:international Conference
Event Dates:2.-5. Sep. 2014
Organizer:Royal Aeronautical Society
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 (old)
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > Rotorcraft
Deposited By: Küfmann, Philip
Deposited On:12 Jan 2015 15:17
Last Modified:12 Jan 2015 15:17

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