Loading...
Please wait, while we are loading the content...
Pressure gradient effects on heat transfer to reusable surface insulation tile-array gaps
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Throckmorton, D. A. |
| Copyright Year | 1975 |
| Description | An experimental investigation was performed to determine the effect of pressure gradient on the heat transfer within space shuttle reusable surface insulation (RSI) tile-array gaps under thick, turbulent boundary-layer conditions. Heat-transfer and pressure measurements were obtained on a curved array of full-scale simulated RSI tiles in a tunnel-wall boundary layer at a nominal free-stream Mach number and free-stream Reynolds numbers. Transverse pressure gradients of varying degree were induced over the model surface by rotating the curved array with respect to the flow. Definition of the tunnel-wall boundary-layer flow was obtained by measurement of boundary-layer pitot pressure profiles, wall pressure, and heat transfer. Flat-plate heat-transfer data were correlated and a method was derived for prediction of heat transfer to a smooth curved surface in the highly three-dimensional tunnel-wall boundary-layer flow. Pressure on the floor of the RSI tile-array gap followed the trends of the external surface pressure. Heat transfer to the surface immediately downstream of a transverse gap is higher than that for a smooth surface at the same location. Heating to the wall of a transverse gap, and immediately downstream of it, at its intersection with a longitudinal gap is significantly greater than that for the simple transverse gap. |
| File Size | 2717743 |
| Page Count | 72 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19750020309 |
| Archival Resource Key | ark:/13960/t70w38479 |
| Language | English |
| Publisher Date | 1975-08-01 |
| Access Restriction | Open |
| Subject Keyword | Fluid Mechanics And Heat Transfer Wind Tunnel Tests Turbulent Boundary Layer Thermal Protection Heat Transfer Space Shuttles Pressure Gradients 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 |
