Analysis of hypersonic model pitching experiments in the TUSQ facility

Analysis of hypersonic model pitching experiments in the TUSQ facility

Experiments have been performed in the TUSQ hypersonic facility on the control of hypersonic models using 3D printed test models fitted with on-board actuation and data-sampling electronics. Analysis of experiments on a pivoted body with an actuated elevator is proceeding through the use of analytical and computational simulations. Our aim is to quantify the impact of the boundary layer separation in the body-elevator corner region on the dynamics of the pitching model, and to attempt to emulate the control loop and responses in the dynamic simulations, to match the physical results. Static pressures measured at three locations along the body and elevator, and pitching moment measurements are assessed against simulations from shock-expansion theory applied to the measured, instantaneous body and elevator angles. A similar assessment of the experiments is performed using 3D CFD simulations of static combinations of body and elevator angles, and additional 2D simulations of the dynamicallyactuated aerodynamic model are also performed.

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