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Manufacturing of a next generation active twist helicopter rotor blade and experimental results of functionality test

Kalow, Steffen and van de Kamp, Bram and Balzarek, Christoph and Riemenschneider, Johannes (2018) Manufacturing of a next generation active twist helicopter rotor blade and experimental results of functionality test. AHS 2018, 14.-17. Mai 2018, Phoenix, Arizona, USA.

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Vibration and noise are omnipresent in a helicopter environment and therefore their reduction is an important goal in helicopter research. Actuators embedded into the skin of a helicopter rotor blade can produce a twist, which influences the propagation of the air turbulence. Hence, vibration and noise levels can be significantly reduced. An important issue during operation of a rotor blade are the centrifugal loads which affect the actuators and can cause a failure. Based on the German Aerospace Center (DLR) project STAR(Smart Twisting Active Rotor), the design of an active Twist rotor blade has been adapted, such that the loads in the actuator system can be significantly reduced and furthermore distributed evenly. Besides a new actuator design, described in an earlier study of the authors, this paper focus on the use of carbon fiber composite for the spar and additional straps near to the trailing edge. This increases the durability of a new generation of active twist rotor blades, which is the basis for a specific and efficient use of the active Twist technology. A first prototype of the new designed rotor blade has already been built. The design changes are addressed in this paper as well as the manufacturing process. Finally results of the numerical model are validated experimentally in the whirl tower and blade properties of the prototype blade are presented.

Item URL in elib:https://elib.dlr.de/120733/
Document Type:Conference or Workshop Item (Speech)
Title:Manufacturing of a next generation active twist helicopter rotor blade and experimental results of functionality test
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Kalow, SteffenUNSPECIFIEDhttps://orcid.org/0000-0002-5308-1209UNSPECIFIED
van de Kamp, BramUNSPECIFIEDhttps://orcid.org/0000-0002-8776-4550UNSPECIFIED
Riemenschneider, JohannesUNSPECIFIEDhttps://orcid.org/0000-0001-5485-8326UNSPECIFIED
Date:16 May 2018
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:active twist, rotor morphing, manufacturing rotor blades, experimental results of functionality test
Event Title:AHS 2018
Event Location:Phoenix, Arizona, USA
Event Type:international Conference
Event Dates:14.-17. Mai 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 Quiet und Comfortable Rotorcraft (old)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Adaptronics
Deposited By: Kalow, Steffen
Deposited On:23 Jul 2018 08:19
Last Modified:23 Jul 2018 08:19

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