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Two-dimensional aerodynamic characteristics of several polygon-shaped cross-sectional models applicable to helicopter fuselages
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Kelley, Henry L. Wilson, John C. Crowell, Cynthia A. |
| Copyright Year | 1992 |
| Description | 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. |
| File Size | 1601832 |
| Page Count | 34 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19920021151 |
| Archival Resource Key | ark:/13960/t72v7fz8d |
| Language | English |
| Publisher Date | 1992-08-01 |
| Access Restriction | Open |
| Subject Keyword | Aerodynamics Aircraft Models Tail Assemblies Helicopters Booms Equipment Wind Tunnel Tests Yawing Moments Blunt Bodies Fuselages Cross Sections Aerodynamic Characteristics Aerodynamic Loads Polygons Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
