التفاصيل البيبلوغرافية
| العنوان: |
Bayesian-Based Method with Metamodels for Rebuilding Freestream Conditions in Atmospheric Entry Flows. |
| المؤلفون: |
Tryoen, J.1, Congedo, P. M.1, Abgrall, R.1, Villedieu, N.2, Magin, T. E.2 |
| المصدر: |
AIAA Journal. Oct2014, Vol. 52 Issue 10, p2190-2197. 8p. |
| مصطلحات موضوعية: |
*ATMOSPHERIC entry of space vehicles, *TRAJECTORIES (Mechanics), *BAYESIAN analysis, *STAGNATION point, *AERONAUTICS |
| مستخلص: |
The paper investigates a new methodology to rebuild freestream conditions for the trajectory of a reentry vehicle from stagnation-point measurements. Uncertainties due to measurements and model parameters are taken into account, and a Bayesian setting supplied with metamodels is used to solve the associated stochastic inverse problem. A sensitivity analysis based on a stochastic spectral framework is first investigated to study the impact of uncertain input data on stagnation-point measurements. An original backward uncertainty propagation method is then proposed, for which only the uncertainties that have the most impact are retained. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
Academic Search Index |