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Experimental aeroheating study of mid-l/d entry vehicle geometries: nasa larc 20-inch mach 6 air tunnel test 6966
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Hollingsworth, Kevin E. Hollis, Brian R. |
| Copyright Year | 2014 |
| Description | Aeroheating data on mid lift-to-drag ratio entry vehicle configurations has been obtained through hypersonic wind tunnel testing. Vehicles of this class have been proposed for high-mass Mars missions, such as sample return and crewed exploration, for which the conventional sphere-cone entry vehicle geometries of previous Mars missions are insufficient. Several configurations were investigated, including elliptically-blunted cylinders with both circular and elliptical cross sections, biconic geometries based on launch vehicle dual-use shrouds, and parametrically-optimized analytic geometries. Testing was conducted at Mach 6 over a range of Reynolds numbers sufficient to generate laminar, transitional, and turbulent flow. Global aeroheating data were obtained using phosphor thermography. Both stream-wise and cross-flow transition occured on different configurations. Comparisons were made with laminar and turbulent computational predictions generated with an algebraic turbulence model. Predictions were generally in good agreement in regions of laminar or fully-turbulent flow; however for transitional cases, the lack of a transition onset prediction capability produced less accurate comparisons. The data obtained in this study are intended to be used for prelimary mission design studies and the development and validation of computational methods. |
| File Size | 12797050 |
| Page Count | 229 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20150000606 |
| Archival Resource Key | ark:/13960/t08w8dr7g |
| Language | English |
| Publisher Date | 2014-11-01 |
| Access Restriction | Open |
| Subject Keyword | Aerodynamics Fluid Mechanics And Thermodynamics Turbulent Flow Laminar Flow Lift Drag Ratio Aerodynamic Heating Wind Tunnel Tests Hypersonic Wind Tunnels Boundary Layer Transition Sample Return Missions Transition Flow Mach Number Mars Missions Thermography Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
