Atmospheric re-entry dynamics of conic objects

SALDÍA, J.P., CIMINO,A., SCHULZ, W., ELASKAR, S., COSTA, A.

MATHEMATICAL PROBLEMS IN ENGINEERING

Hindawi Publishing Corporation

Lugar: New York; Año: 2009 p. 1 - 10

1024-123X

AbstractOne of the key issues in a re-entry risk analysis is the calculation of the aerodynamic coefficients. Thispaper presents a methodology to obtain these coefficients and couple it to a code that computes re-entrytrajectories considering six degrees of freedom. To evaluate the different flight conditions encounteredduring the natural re-entry of conical objects, the Euler Equations for gasdynamics flows are used. A newscheme TVD (Total Variation Diminishing) is incorporated to a finite volume unstructured cell-centredformulation, for application to three-dimensional Euler flows. Finally numerical results are obtained for aconical body at different attack angles and Mach. With these results, the calculation of the trajectoriesduring atmospheric re-entry is completed.