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A study of boundary layer transition on outgassing cones in hypersonic flow
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Pope, T. C. Stalmach Jr., C. J. Bertin, J. J. McCloskey, M. H. |
| Copyright Year | 1971 |
| Description | Surface heat-transfer rates and pressures were measured at hypersonic speeds on sharp cones at zero angle of attack with and without gas injection. Using the non-injection results for reference data the effects on heating and transition location of surface roughness and injectant rate, distribution and composition were determined. The transition location was sensitive to the injectant distribution. The transition Reynolds numbers were significantly greater when the injectant distribution was constant than with a variable distribution. The measured heat-transfer distribution were also strongly dependent upon the injectant distribution. Transition Reynolds number results obtained during this program with a variable injectant distribution were correlated with a limited amount of data available for a degrading model tested in a different facility. Transitional data with constant injectant distribution were correlated with earlier results. An empirical correlation of heat-transfer reduction due to gas injection in turbulent flow was developed for both distributions tested. Several effects of mass addition on heating and transition, which have been earlier reported, were observed. |
| File Size | 12858076 |
| Page Count | 78 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19720004576 |
| Archival Resource Key | ark:/13960/t4cp1vr4q |
| Language | English |
| Publisher Date | 1971-12-01 |
| Access Restriction | Open |
| Subject Keyword | Fluid Mechanics Outgassing Reynolds Number Conical Bodies Hypersonic Flow Boundary Layer Transition Surface Roughness Gas Injection Angle of Attack Heat Transfer 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 |
