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Fuselage-Rotor Interference Including Side-Slip Angle

van der Wall, Berend G. and Yin, Jianping (2016) Fuselage-Rotor Interference Including Side-Slip Angle. AHS Technical Meeting on Aeromechanics Design for Vertical Lift, 20.-22. Jan. 2016, San Francisco, CA.

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Abstract

A semi-empirical and physics-based analytical formulation of the induced velocities generated by the fuselage shell of the Bo105 wind tunnel model in the volume around the rotor is derived from velocity data computed by a panel code. The re-duced-order analytical model is several orders of magnitude faster than the panel code and thus is predestinated for use in comprehensive rotor codes. Angle of attacks investigated range from vertical descent, shallow descent, level flight and climb to vertical ascent and side-slip angles range from forward to quartering flight. The analytical induced velocity model can directly be used to account for the inflow at the blade elements and also allows for analytical or numerical integration of rotor wake convection to compute the associated displacements of rotor blade tip vortices travelling downstream within this velocity field. The focus of this paper is the analytical evaluation of fuselage-rotor interference in side-slip angles on rotor trim controls, using blade element momentum theory. The results are compared to the influence of thrust-induced inflow gradients on rotor trim.

Item URL in elib:https://elib.dlr.de/102572/
Document Type:Conference or Workshop Item (Speech)
Title:Fuselage-Rotor Interference Including Side-Slip Angle
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
van der Wall, Berend G.FT-HUBUNSPECIFIED
Yin, Jianpingjianping.yin (at) dlr.deUNSPECIFIED
Date:January 2016
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 1-17
Status:Published
Keywords:Fuselage-Rotor Interactions, Helicopter Aerodynamics, Rotor Aeromechanics
Event Title:AHS Technical Meeting on Aeromechanics Design for Vertical Lift
Event Location:San Francisco, CA
Event Type:international Conference
Event Dates:20.-22. Jan. 2016
Organizer:American Helicopter Society International
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
Institute of Aerodynamics and Flow Technology > Helicopters
Deposited By: van der Wall, Prof. Dr. Berend G.
Deposited On:10 Feb 2016 10:38
Last Modified:09 Mar 2017 15:45

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