A Multidisciplinary Approach to Aerodynamic Loading of a 2.75-in Rocket With Fins

Report No. ARL-MR-520
Authors: Karen R. Heavey, James F. Newill, and Jubaraj Sahu
Date/Pages: September 2001; 23 pages
Abstract: A multidisciplinary effort was undertaken to investigate the effect of structural loading on a rocket of interest to the U.S. Army. This report addresses the element of aerodynamic loading. Computational fluid dynamics techniques have been used to obtain numerical solutions for the flow field of a rocket with and without fins. Computed results have been obtained for a Mach number of 2.0 at 0 degrees and 5 degrees angles of attack. Qualitative flow field features show the surface pressure on the surface of the rocket. The surface pressure data was then extracted from the solution files. Software was developed to couple this data to a structural dynamics solver. The results provided the aerodynamic loading component used during the initial portion of the rocket flight. Preliminary results showing x-stress on the rocket at a 5 degree angle of attack are shown. Additional efforts are needed to generalize and fine tune the CFD/SD methods.
Distribution: Approved for public release
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Last Update / Reviewed: September 1, 2001