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Analysis of Grid Fins for Launch Abort Vehicle Using a Cartesian Euler Solver
| Content Provider | Semantic Scholar |
|---|---|
| Author | Kless, James Aftosmis, Michael J. |
| Copyright Year | 2011 |
| Abstract | This paper conducts a numerical study of four sets of aerodynamic control surfaces, called grid fins, mounted on a full Launch Abort Vehicle geometry using a Cartesian Euler Solver with embedded boundaries and adjoint-driven adaptive meshing. Since Cartesian methods are insensitive to complex geometry, this makes them suitable for the highly complex resulting configuration. Numerical results are compared against subtransand supersonic wind tunnel data in order to examine our ability to accurately predict the force and moment increments afforded by these unconventional control surfaces. A database of 1152 separate cases were ran including 12 different Mach numbers from 0.5 2.5, 15 different angle of attacks (0 15◦), and 6 different geometries. Overall, the simulation data show good agreement with tunnel runs and similar rankings of configurations and trends are found between wind tunnel and simulation results suggesting a large potential for Cartesian Euler Solvers in accurately predicting force and moment increments for grid fins on the Launch Abort Vehicle. In particular, pitching moment was predicted accurately over the entire Mach-alpha space. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://www.nas.nasa.gov/publications/software/docs/cart3d/pages/publications/aiaa11_3666_final_1.pdf |
| Alternate Webpage(s) | https://www.nas.nasa.gov/assets/pdf/papers/aiaa11_3666_final_1.pdf |
| Alternate Webpage(s) | https://www.nas.nasa.gov/assets/pdf/papers/kless_j_analysis_grid_fins_2011.pdf |
| Alternate Webpage(s) | http://www.nas.nasa.gov/assets/pdf/papers/kless_j_analysis_grid_fins_2011.pdf |
| Alternate Webpage(s) | https://doi.org/10.2514/6.2011-3666 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
