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Measurement of Blade Deflection of an Unmanned Intermeshing Rotor Helicopter

Voigt, Andreas E. and Dauer, Johann C. and Knaak, Florian (2017) Measurement of Blade Deflection of an Unmanned Intermeshing Rotor Helicopter. 43rd European Rotorcraft Forum, 12.-15. Sep. 2017, Mailand, Italien.

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Abstract

The dynamic behavior of intermeshing rotor blades is complex and subjected to rotor-rotor-interactions like oblique blade-vortex and blade-wake interactions. To gain a better understanding of these effects a blade deflection measurement method is proposed in this paper. The method is based on a single camera per rotor blade depicting the rotor blade from a position fixed to the rotor head. Due to the mounting position of the camera close to the rotational plane the method is called In-Plane Blade Deflection Measurement (IBDM). The basic principles, data processing and measurement accuracy are presented in the paper. The major advantages of the proposed method are the applicability to both, flight and wind tunnel trials, as well as the usability for multi-rotor configurations having a significant rotor overlap. Furthermore comparisons to other blade deflection measurement methods are presented. Finally, experimental data of a flight test of an unmanned intermeshing helicopter is presented.

Item URL in elib:https://elib.dlr.de/116999/
Document Type:Conference or Workshop Item (Speech)
Title:Measurement of Blade Deflection of an Unmanned Intermeshing Rotor Helicopter
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Voigt, Andreas E.andreas.voigt (at) dlr.deUNSPECIFIED
Dauer, Johann C.johann.dauer (at) dlr.deUNSPECIFIED
Knaak, Florianflorian.knaak (at) rwth-aachen.deUNSPECIFIED
Date:12 September 2017
Refereed publication:Yes
Open Access:No
In DOAJ:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Blade Deflection, Intermeshing Rotor, Measurement
Event Title:43rd European Rotorcraft Forum
Event Location:Mailand, Italien
Event Type:international Conference
Event Dates:12.-15. Sep. 2017
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > Unmanned Aircraft
Deposited By: Voigt, Andreas
Deposited On:11 Jan 2018 14:51
Last Modified:11 Jan 2018 14:51

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