DEMISABILITY STUDY OF INDUSTRIAL TEST CASES WITH THE SPACECRAFT-ORIENTED CODE PAMPERO M. Spel (1) , J. Dumon (1) , E. Constant (1) , P. Van Hauwaert (1) , S. Galera (2) , J. Annaloro (3) (1) RTECH, Parc Technologique Delta Sud, 09340, Verniolle, France, Email: martin.spel@rtech.fr (2) ALTRAN SO, 4 avenue Didier Daurat, 31700 Blagnac, France (3) (3) CNES, Centre spatial de Toulouse, 18 Avenue E. Belin, 31401 Toulouse cedex 9, France, Email: julien.annaloro@cnes.fr ABSTRACT CNES develops its own spacecraft-oriented tool named PAMPERO since 2013. PAMPERO aims to simulate the complete atmospheric re-entry of an entire satellite, launcher or the associated fragments due to the breakup process. One of its objectives is to provide a support to experts using current certification tools such as DEBRISK [1] in which the user must pre-fragment the space vehicle. The purpose of this communication is to present the ability of PAMPERO [2-6] to model complex industrial test cases by analysing the surviving mass after a re-entry and the casualty area as a function of the release altitude. For each release altitude, several attitude input variations allow to evaluate the sensitivity to the release conditions. Results are compared to issue from another spacecraft- oriented tool named SCARAB [7]. 1 Introduction The French Space Operation Act (LOS) adopted on 3 rd of June 2008 has established a national regime of authorization and supervision of space activities. CNES and R.Tech are since then involved in the numerical modelling of re-entering space debris. CNES is in charge of ensuring the right application of the law. To predict the debris survivability during their re-entries and assess the prospective risk on ground, the development of complete multidisciplinary tools is required. With this in mind, CNES in collaboration with R.Tech, develops the spacecraft-oriented tool named PAMPERO since 2013. PAMPERO aims to simulate the complete atmospheric re-entry of an entire satellite, launcher or the associated fragments due to the breakup process. The interest of developing more complex codes, such as vehicle-oriented codes, makes perfect sense. Indeed, the breakup processes are automatically computed by considering thermomechanical loads. Within the framework of the improvement/validation of PAMPERO and the in-depth understanding of the breakup process, data from experiments is essential. The objectives of this paper are to challenge PAMPERO on an industrial test case and to present the process used in each PAMPERO simulations in order to insure a realistic interpretation of the risks on ground. 2 NUMERICAL TOOLS 2.1 PAMPERO PAMPERO is a spacecraft-oriented code developed since 2013. Its features are as follows: - Six degrees-of-freedom flight dynamics (2013), - Aerodynamics and aerothermodynamics: all aerodynamics coefficients & local wall thermal heat fluxes computed (2013), [2][3][5] - Heat transfers modelling by a 3D explicit thermal conduction module (2014) [6] - Ablation phenomena (2015), [6] - Mechanical stress analysis (coupling with ASTER) from the aerodynamic and thermal loads (2016/2017), [2-6] - Multi-material objects (2017), [6] - Fragmentation process (2017), [6] - Simple model for damping effects (2018) - Implicit thermal conduction model - Aerothermodynamics for concave surfaces - Subsonic aerodynamics PAMPERO is currently in an important validation phase where a large number of comparisons are being performed with experiments, CFD/DSMC computations and other spacecraft-oriented tools [2-6]. 2.2 GridPro GridPro is a high-quality grid generator which permits automated multi-block structured grid generation featuring orthogonality, smoothness and robustness. GridPro is widely used in different domains like turbo machinery, Oil and Gas, Aerospace etc. . GridPro generates multiblock structured grids which are converted to unstructured hexahedral meshes. 3 Validation A careful verification & validation process study is provided with the PAMPERO software. The strength of this procedure is that it can identify coding errors or Proc. 8th European Conference on Space Debris (virtual), Darmstadt, Germany, 20–23 April 2021, published by the ESA Space Debris Office Ed. T. Flohrer, S. Lemmens & F. Schmitz, (http://conference.sdo.esoc.esa.int, May 2021)