Two Dimensional Aerodynamic Characteristics Of Several Polygon Shaped Cross Sectional Models Applicable To Helicopter Fuselages PDF Download
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Author | : Henry L. Kelley |
Publisher | : |
Total Pages | : 36 |
Release | : 1992 |
Genre | : Helicopters |
ISBN | : |
Download Two-dimensional Aerodynamic Characteristics of Several Polygon-shaped Cross-sectional Models Applicable to Helicopter Fuselages Book in PDF, ePub and Kindle
Author | : National Aeronautics and Space Administration (NASA) |
Publisher | : Createspace Independent Publishing Platform |
Total Pages | : 34 |
Release | : 2018-07-15 |
Genre | : |
ISBN | : 9781722920272 |
Download Two-Dimensional Aerodynamic Characteristics of Several Polygon-Shaped Cross-Sectional Models Applicable to Helicopter Fuselages Book in PDF, ePub and Kindle
A wind-tunnel investigation was conducted to determine 2-D aerodynamic characteristics of nine polygon-shaped models applicable to helicopter fuselages. The models varied from 1/2 to 1/5 scale and were nominally triangular, diamond, and rectangular in shape. Side force and normal force were obtained at increments of angle of flow incidence from -45 to 90 degrees. The data were compared with results from a baseline UH-60 tail-boom cross-section model. The results indicate that the overall shapes of the plots of normal force and side force were similar to the characteristic shape of the baseline data; however, there were important differences in magnitude. At a flow incidence of 0 degrees, larger values of normal force for the polygon models indicate an increase in fuselage down load of 1 to 2.5 percent of main-rotor thrust compared with the baseline value. Also, potential was indicated among some of the configurations to produce high fuselage side forces and yawing moments compared with the baseline model. Kelley, Henry L. and Crowell, Cynthia A. and Wilson, John C. Langley Research Center DA PROJ. 1L2-36003-D-313; RTOP 505-59-36-01...
Author | : |
Publisher | : |
Total Pages | : 562 |
Release | : 1992 |
Genre | : Aeronautics |
ISBN | : |
Download Scientific and Technical Aerospace Reports Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 134 |
Release | : 1993 |
Genre | : Aeronautics |
ISBN | : |
Download NASA Scientific and Technical Publications Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 122 |
Release | : 1993 |
Genre | : Aeronautics |
ISBN | : |
Download NASA Scientific and Technical Publications: A Catalog of Special Publications, Reference Publications, Conference Publications, and Technical Papers, 1991-1992 Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 128 |
Release | : 1962 |
Genre | : Aeronautics |
ISBN | : |
Download NASA SP. Book in PDF, ePub and Kindle
Author | : James L. Williams |
Publisher | : |
Total Pages | : 736 |
Release | : 1956 |
Genre | : Helicopters |
ISBN | : |
Download Wind-tunnel Investigation of Effects of Fuselage Cross-sectional Shape, Fuselage Bend, and Vertical-tail Size on Directional Characteristics of Nonoverlap-type Helicopter Fuselage Models Without Rotors Book in PDF, ePub and Kindle
A low-speed investigatio was made in the Langley stability tunnel to determine the directional stability characteristics of tandem nonoverlap-type helicopter fuselages without rotors. The investigation consisted of a study of both bent and straight fuselages having either circular or essentially elliptical cross sections and with two vertical-tail sizes.
Author | : |
Publisher | : |
Total Pages | : 744 |
Release | : 1992-12 |
Genre | : Science |
ISBN | : |
Download Government Reports Announcements & Index Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 436 |
Release | : 1993 |
Genre | : Aeronautics |
ISBN | : |
Download The Aeronautical Journal Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 868 |
Release | : 1993-07 |
Genre | : Government publications |
ISBN | : |
Download Monthly Catalogue, United States Public Documents Book in PDF, ePub and Kindle