Multiple-Body Trajectory Calculations Using the Beggar Code

Abstract

The Beggar code uses blocked and overset grid techniques and combines the grid assembly, e ow solution, and six-degree-of-freedom trajectory calculation processes into a single code with reduced user input. Its capabilities to handle moving body problems are demonstrated through a series of store separation trajectory calculations. Single-storeseparationtrajectorycalculationsattransonicMachnumbersarecomparedwithpreviouslypublished wind-tunnel data. Supersonicstoreseparation predictionsare compared with previously unpublished wind-tunnel data. The generality and ease of use are further illustrated by a three-store ripple release simulation.