A novel technique for aerodynamic force measurement in shock tubes

A novel measurement technique has been developed for aerodynamic force measurement in the Institute of Saint-Louis shock tunnel. Its key feature is a mounting support, which releases the test model and tightens it again after a free-flight duration of 10-15-ms. This short time of free flight allows for the installation of wirings, because the model travels only some millimeters within the test time. Thus, the accelerations can be recorded directly, as can up to six components, since no restraint is effective. This technique facilitates optimization with regard to stiffness, damping, and stability.<>