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Correlation Of Puma Airloads Evaluation Of Cfd Prediction Methods
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Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781725622258 Total Pages :36 pages Book Rating :4.6/5 (222 download)
Book Synopsis Correlation of Puma Airloads by : National Aeronautics and Space Administration (NASA)
Download or read book Correlation of Puma Airloads written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-16 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: A cooperative program was undertaken by research organizations in England, France, Australia and the U.S. to study the capabilities of computational fluid dynamics codes (CFD) to predict the aerodynamic loading on helicopter rotor blades. The program goal is to compare predictions with experimental data for flight tests of a research Puma helicopter with rectangular and swept tip blades. Two topics are studied. First, computed results from three CFD codes are compared for flight test cases where all three codes use the same partial inflow-angle boundary conditions. Second, one of the CFD codes (FPR) is iteratively coupled with the CAMRAD/JA helicopter performance code. These results are compared with experimental data and with an uncoupled CAMRAD/JA solution. The influence of flow field unsteadiness is found to play an important role in the blade aerodynamics. Alternate boundary conditions are suggested in order to properly model this unsteadiness in the CFD codes. Strawn, Roger C. and Desopper, Andre and Miller, Judith and Jones, Alan Ames Research Center NASA-TM-102226, A-89223, NAS 1.15:102226, USAAVSCOM-TM-89-A-001 RTOP 992-21-01...
Book Synopsis Correlation of Puma Airloads: Evaluation of CFD Prediction Methods by :
Download or read book Correlation of Puma Airloads: Evaluation of CFD Prediction Methods written by and published by . This book was released on 1989 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Correlation of Puma Airloads--Lifting-Line and Wake Calculation by :
Download or read book Correlation of Puma Airloads--Lifting-Line and Wake Calculation written by and published by DIANE Publishing. This book was released on with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Correlation of Puma Airloads--Lifting-Line and Wake Calculation by :
Download or read book Correlation of Puma Airloads--Lifting-Line and Wake Calculation written by and published by . This book was released on 1989 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781722132385 Total Pages :32 pages Book Rating :4.1/5 (323 download)
Book Synopsis Correlation of Puma Airloads by : National Aeronautics and Space Administration (NASA)
Download or read book Correlation of Puma Airloads written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: A 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. Bousman, William G. and Young, Colin and Gilbert, Neil and Toulmay, Francois and Johnson, Wayne and Riley, M. J. Ames Research Center RTOP 992-21-01...
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1990 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Comparison of Lifting-Line and CFD Methods with Flight Test Data from a Research Puma Helicopter by :
Download or read book A Comparison of Lifting-Line and CFD Methods with Flight Test Data from a Research Puma Helicopter written by and published by . This book was released on 1996 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: Four lifting-line methods were compared with flight test data from a research Puma helicopter and the accuracy assessed over a wide range of flight speeds. Hybrid CFD methods were also examined for two high-speed conditions. A parallel analytical effort was performed with the lifting-line methods to assess the effects of modeling assumptions and this provided insight into the adequacy of these methods for load predictions.
Book Synopsis Correlation of Airloads on a Two-bladed Helicopter Rotor by : Francisco J. Fernandez
Download or read book Correlation of Airloads on a Two-bladed Helicopter Rotor written by Francisco J. Fernandez and published by . This book was released on 1993 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aeronautical Engineering written by and published by . This book was released on 1992 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA).
Download or read book NASA SP. written by and published by . This book was released on 1992 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1990 with total page 1232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aeronautical Engineering: A Cumulative Index to a Continuing Bibliography (supplement 261) by :
Download or read book Aeronautical Engineering: A Cumulative Index to a Continuing Bibliography (supplement 261) written by and published by . This book was released on 1991 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government reports annual index by :
Download or read book Government reports annual index written by and published by . This book was released on 199? with total page 1600 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Download or read book International Aerospace Abstracts written by and published by . This book was released on 1995 with total page 962 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis NAS (Numerical Aerodynamic Simulation Program) Technical Summaries, March 1989 - February 1990 by :
Download or read book NAS (Numerical Aerodynamic Simulation Program) Technical Summaries, March 1989 - February 1990 written by and published by . This book was released on 1990 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aeronautical Engineering: A Cumulative Index to a Continuing Bibliography (supplement 248) by :
Download or read book Aeronautical Engineering: A Cumulative Index to a Continuing Bibliography (supplement 248) written by and published by . This book was released on 1990 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Memorandum written by and published by . This book was released on 1991 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
