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TECHNICAL PAPERS

Prediction of Blade-Vortex Interaction Airloads With Higher-Harmonic Pitch Controls Using the 2GCHAS Comprehensive Code

[+] Author and Article Information
Joon W. Lim, Chee Tung, Yung H. Yu

Army/NASA Rotorcraft Division, US Army AMCOM (AMRDEC), NASA Ames Research Center, Moffett Field, CA 94035

J. Pressure Vessel Technol 123(4), 469-474 (Jun 19, 2001) (6 pages) doi:10.1115/1.1401025 History: Received March 14, 2001; Revised June 19, 2001
Copyright © 2001 by ASME
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References

Figures

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2GCHAS aerodynamic model for the HART rotor blade consisting of 16 elements with a blade radius of 2 m
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Section lift predictions at an advance ratio of 0.15
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Effect of prescribed torsion with measured data on the section lift at an advance ratio of 0.15
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Effect of aerodynamic center on the section lift at an advance ratio of 0.15
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Effect of center of gravity on the section lift at an advance ratio of 0.15, assuming no aerodynamic center offset
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Predictions of lag and flap deflections at the blade tip at an advance ratio of 0.15 for Run 140 (BL)
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Comparison of the measured and predicted tip vortex filament locations at the azimuths of 35 and 295 deg—(a) BL case (Run 140), (b) MN case (Run 138), and (c) MV case (Run 133)
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Effect of center of gravity on blade tip elastic torsion at an advance ratio of 0.15 for Run 140 (BL)
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Effect of aerodynamic center on blade tip elastic torsion at an advance ratio of 0.15 for Run 140 (BL)
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Prediction of elastic torsion deflection at the blade tip at an advance ratio of 0.15 for Run 140 (BL), Run 138 (MN), and Run 133 (MV)
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Section lift predictions using prescribed blade motion with measured data at an advance ratio of 0.15

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