Conceptual Design Methodology of A 3-DOF Dynamic Model Holder System for Open Subsonic Wind Tunnel

One of the most puzzling phenomena in rocket's flight trajectory is the wobbling maneuver, due to its nature that the sources of wobbling problem could come from multiple factors and all need to be investigated one by one. One of the source problems is the coupling motion mechanism between rolling and pitching that is uncontrolled. This paper presented a tool to address this flight dynamics coupling phenomenon. The tool called Dynamic Model Holder System (MHS) that can reproduce the motion of wobbling while at the same time examining and scrutinizing the source of instability. After undergoing many iterations of conceptual designs, the effort produced a dynamic MHS design that could hasten an instability and another design that could dampen instability. The source of instability is found to be the negative static margin.