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Rotor without Reaction Torque Historical Review of H.-G. Küssner’s Rotorcraft Research

Geißler, Wolfgang and van der Wall, Berend G. (2010) Rotor without Reaction Torque Historical Review of H.-G. Küssner’s Rotorcraft Research. In: Proceedings, pp. 1-11. 66th Annual Forum of the American Helicopter Society, 11.-13. Mai, 2010, Phoenix, AZ, USA.

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As early as 1934, Prof. Dr. Hans-Georg Küssner from the Aerodynamische Versuchsanstalt Göttingen (AVA) in Germany was thinking about an alternative to helicopter rotor torque compensation, that was tried experimentally already in 1921 by Passat in England. Based on the theoretical work about two-dimensional unsteady airfoil aerodynamics, especially combined plunge and pitch of an airfoil that revealed a propulsive force as is used by bird flight, he was tempted to try this concept on driving a helicopter rotor via forced flapping of its rotor blades. Experiments have been carried out in the mid-30ies and patents applied for the concept which were granted a long time later after an intense and controversy dispute with the responsible officials. This paper describes Küssner’s efforts regarding the forced flapping concept and experimental results he obtained in the AVA wind tunnel in hovering condition.

Item URL in elib:https://elib.dlr.de/63612/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Rotor without Reaction Torque Historical Review of H.-G. Küssner’s Rotorcraft Research
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Geißler, Wolfgangwolfgang.geissler (at) dlr.deUNSPECIFIED
van der Wall, Berend G.berend.vanderwall (at) dlr.deUNSPECIFIED
Date:May 2010
Journal or Publication Title:Proceedings
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 1-11
Keywords:forced flapping rotor, ornicopter, helithopter, Schlagflügelpropeller, Schlagantrieb
Event Title:66th Annual Forum of the American Helicopter Society
Event Location:Phoenix, AZ, USA
Event Type:international Conference
Event Dates:11.-13. Mai, 2010
Organizer:American Helicopter Society
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Rotorcraft (old)
DLR - Research area:Aeronautics
DLR - Program:L RR - Rotorcraft Research
DLR - Research theme (Project):L - The Active Rotorcraft (old)
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > Rotorcraft
Deposited By: van der Wall, Prof. Dr. Berend G.
Deposited On:27 May 2010 14:54
Last Modified:27 May 2010 14:54

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