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Correlation of Puma airloads: Lifting-line and wake calculationA cooperative program undertaken by organizations in the United States, England, France, and Australia has assessed the strengths and weaknesses of four lifting-line/wake methods and three CFD methods by comparing their predictions with the data obtained in flight trials of a research Puma. The Puma was tested in two configurations: a mixed bladed rotor with instrumented rectangular tip blades, and a configuration with four identical swept tip blades. The results are examined of the lifting-line predictions. The better lifting-line methods show good agreement with lift at the blade tip for the configuration with four swept tips; the moment is well predicted at 0.92 R, but deteriorates outboard. The predictions for the mixed bladed rotor configuration range from fair to good. The lift prediction is better for the swept tip blade than for the rectangular tip blade, but the reasons for this cannot be determined because of the unmodeled effects of the mixed bladed rotor.
Document ID
19900004011
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Bousman, William G. (NASA Ames Research Center Moffett Field, CA., United States)
Young, Colin (Royal Aerospace Establishment Farnborough (England)., United States)
Gilbert, Neil (Aeronautical Research Labs. Melbourne (Australia)., United States)
Toulmay, Francois (Aerospatiale Marignane (France)., United States)
Johnson, Wayne (Johnson Aeronautics Palo Alto, CA., United States)
Riley, M. J. (Royal Aerospace Establishment Bedford, United Kingdom)
Date Acquired
September 6, 2013
Publication Date
November 1, 1989
Subject Category
Aerodynamics
Report/Patent Number
A-89209
NASA-TM-102212
USAAVSCOM-TR-89-A-006
NAS 1.15:102212
AD-A215494
Meeting Information
Meeting: European Rotorcraft Forum
Location: Amsterdam
Country: Netherlands
Start Date: September 12, 1989
End Date: September 15, 1989
Accession Number
90N13327
Funding Number(s)
PROJECT: RTOP 992-21-01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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