Loading...
Please wait, while we are loading the content...
Similar Documents
Airfoil large eddy breakup devices for turbulent drag reduction
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Anders, J. B. |
| Copyright Year | 1986 |
| Description | It was determined from the present LaRC experiments that tandem, airfoil-shaped large eddy breakup (LEBU) devices can reduce local skin friction as much as 30 percent with a recovery region extending more than 100 boundary layer thicknesses downstream. These airfoils experience near laminar skin friction device drag and produce net drag reductions of up to 7 percent. In contrast to the thin plates used in previous experiments, these airfoils are more than 1000 time stiffer and hence have the potential to withstand the real flight environment (dynamic pressure 36 times larger than in low-speed wing tunnels). In addition, the higher Reynolds numbers of the present tests indicate drag reduction performance is at least as good (or better) as at lower Reynolds numbers. |
| File Size | 335022 |
| Page Count | 13 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19880005574 |
| Archival Resource Key | ark:/13960/t6vx57q0q |
| Language | English |
| Publisher Date | 1986-12-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Design, Testing And Performance Friction Reduction Geometry Drag Reduction Skin Friction Noise Reduction Reynolds Number Wind Tunnel Tests Turbulent Boundary Layer Airfoils Vortex Breakdown Thin Plates Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
