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Validation of an internal ballistics reconstruction technique with different propellants

par Gelain, Riccardo ;Glaser, Christopher;Lestrade, J.-Y.;Hijlkema, Jouke;Hendrick, Patrick
Référence ASCenSIon Conference (12-14 September 2023: Dresden, Germany)
Publication Non publié, 2023-09-14

Communication à un colloque

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Résumé :

An internal ballistics reconstruction technique is applied to the data gathered experimentally on two different hybrid rocket engines. In particular, this numerical method allows to obtain the evolution of the spatially averaged regression rate and the internal port diameter of the solid fuel grain over the burning time. The inputs of the algorithm are the oxidizer mass flow rate and combustion chamber pressure, as well as the total fuel mass consumption. A preliminary assessment of the technique is carried out in this paper applying it to the test data gathered on the H2O2/HDPE HYCAT engine of ONERA, and to the experimental data of the ULB-HRM N2O/HDPE engine of Université Libre de Bruxelles. The different engines operating conditions and oxidizer selection provide a larger dataset for the validation of the technique robustness and reliability of the results.