Loading...
Please wait, while we are loading the content...
Similar Documents
Effects of spanwise blowing on the surface pressure distribution and vortex-lift characteristics of a trapezoidal wing-strake configuration
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Erickson, G. E. Campbell, J. F. |
| Copyright Year | 1979 |
| Description | The effects of spanwise blowing on the surface pressures of a 44 deg swept trapezoidal wing-strake configuration were measured. Wind tunnel data were obtained at a free stream Mach number of 0.26 for a range of model angle of attack, jet thrust coefficient, and nozzle chordwise location. Results showed that spanwise blowing delayed the leading edge vortex breakdown to larger span distances and increased the lifting pressures. Vortex lift was achieved at span stations immediately outboard of the strake-wing junction with no blowing, but spanwise blowing was necessary to achieve vortex lift at increased span distances. Blowing on the wing in the presence of the strake was not as effective as blowing on the wing alone. Spanwise blowing increased lift throughout the angle-of-attack range, improved the drag polars, and extended the linear pitching moment to higher values of lift. The leading edge suction analogy can be used to estimate the effects of spanwise blowing on the aerodynamic characteristics. |
| File Size | 5075225 |
| Page Count | 73 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19790008632 |
| Archival Resource Key | ark:/13960/t0qr9mm2s |
| Language | English |
| Publisher Date | 1979-02-01 |
| Access Restriction | Open |
| Subject Keyword | Aerodynamics Nose Fins Vortices Pressure Distribution Wing Span Blowing Angle of Attack Aerodynamic Characteristics Leading Edges Lift Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
