Author(s)

J. Srulijes, P. Gnemmi, K. Runne, F. Seiler

Abstract

Flow visualisation, pressure measurements and CFD calculations on spike-tipped bodies J. Srulijes*, P. Gnemmi*, K. Runne^, F. Seller* ' French-German Research Institute of Saint-Louis (ISL) F-68301 Saint-Louis, France *\ ^^ ____ EADS Deutschland GmbH, LFK-Lenkflugkorpersysteme GmbH D-88039 Friedrichshafen, Germany Abstract The requirements imposed by EADS Deutschland GmbH for the design of a new high velocity missile V/SHORADS (Very/Short Range Air Defence System) are the reduction of drag and to obtain reliable information from the opto-electronic embedded sensors at even high angles of attack. The aim of our investigation is to find new spike geometries and to optimise these to reach high angles of attack without losing the drag reduction effect well-known for small angles of attack. Flow visualisation pictures taken with differential interferometry are shown. A classical disk spike geometry is compared with a new spherical spike and the advantages of

Keywords