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Asymmetric base-bleed effect on aerospike plume-induced base-heating environment during power-pack out
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Lee, Young-Ching Wang, Ten-See D'Agostino, Mark Williams, Robert Droege, Alan |
| Copyright Year | 2003 |
| Description | A computational heat transfer design methodology was developed to study tbe dual-engine linear aerospike plume-induced base-heating environment during one power-pack out, in ascent flight. It includes a three-dimensional, finite volume, viscous, chemically reacting, and pressure-based computational fluid dynamics formulation, a special base-bleed boundary condition, and a three-dimensional, finite volume, and spectral-line-based weighted-sum-of-gray-gases absorption computational radiation heat transfer formulation. A separate radiation model was used for diagnostic purposes. The computational methodology was systematically benchmarked. in this study, near-base radiative heat fluxes were computed, and they compared well with those measured during static linear aerospike engine tests. The base-heating environment of 18 trajectory points secected from three power-pack out scenarios was computed. The computed asymmetric base-heating physics were analyzed. The power-pack out condition has the most impact on convective base heating when it happens early in flight. The soume of its impact comes from the asymmetric and reduced base bleed. |
| File Size | 907518 |
| Page Count | 10 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20050111470 |
| Archival Resource Key | ark:/13960/t2b906z9x |
| Language | English |
| Publisher Date | 2003-05-01 |
| Access Restriction | Open |
| Subject Keyword | Fluid Mechanics And Thermodynamics Computational Fluid Dynamics Base Heating Gray Gas Impingement X-33 Reusable Launch Vehicle Engine Failure Aerospike Engines Finite Volume Method Three Dimensional Models Radiative Heat Transfer Heat Flux Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
