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Rotor/Wing Interactions in HoverHover predictions of tiltrotor aircraft are hampered by the lack of accurate and computationally efficient models for rotor/wing interactional aerodynamics. This paper summarizes the development of an approximate, potential flow solution for the rotor-on-rotor and wing-on-rotor interactions. This analysis is based on actuator disk and vortex theory and the method of images. The analysis is applicable for out-of-ground-effect predictions. The analysis is particularly suited for aircraft preliminary design studies. Flow field predictions from this simple analytical model are validated against experimental data from previous studies. The paper concludes with an analytical assessment of the influence of rotor-on-rotor and wing-on-rotor interactions. This assessment examines the effect of rotor-to-wing offset distance, wing sweep, wing span, and flaperon incidence angle on tiltrotor inflow and performance.
Document ID
20020076286
Acquisition Source
Ames Research Center
Document Type
Technical Memorandum (TM)
Authors
Young, Larry A.
(NASA Ames Research Center Moffett Field, CA United States)
Derby, Michael R.
(Aerospace Computing, Inc. Mountain View, CA United States)
Date Acquired
September 7, 2013
Publication Date
April 1, 2002
Subject Category
Aerodynamics
Report/Patent Number
A-0207202
NASA/TM-2002-211392
NAS 1.15:211392
Funding Number(s)
PROJECT: RTOP 712-92-43
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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