Loading...
Please wait, while we are loading the content...
Similar Documents
Prediction of optical propagation losses through turbulent boundary/shear layers
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Verhoff, A. |
| Copyright Year | 1980 |
| Description | A simplified mathematical model was developed which predicts the optical propagation losses which occur when an optical beam of given wave length passes through a turbulent boundary layer or shear layer. The optical losses are predicted in terms of line spread function (or Strehl ratio) and modulation transfer function by using experimentally determined values of layer thickness, streamwise, lateral and beamwise density fluctuation length scales, and distribution of the standard deviation of the density fluctuations through the turbulent layer. The prediction model was applied to the analysis of a number of selected cases of interest from the aerodynamic-optical interaction wind-tunnel investigation conducted in the NASA-Ames 1.83 x 1.83 meter (6 x 6 ft) wind tunnel. Direct optical measurements are compared with the results predicted by the aerodynamic analysis. |
| File Size | 1842721 |
| Page Count | 47 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19800017098 |
| Archival Resource Key | ark:/13960/t1kh5d49h |
| Language | English |
| Publisher Date | 1980-04-01 |
| Access Restriction | Open |
| Subject Keyword | Fluid Mechanics And Heat Transfer Shear Layers Airborne Equipment Wave Propagation Optical Properties Predictions Turbulent Boundary Layer Modulation Transfer Function Mathematical Models Radiant Flux Density Wave Degradation Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
