Speaker
Description
Due to the multiplication of private actors in the space adventure, France has adopted in 2008 the French Space Operation Act (FSOA), which established a national regime of authorization and supervision for space activities. The Technical Regulations have clearly addressed the concepts of safety and sustainability of space activities, including the safety of people and property. Within this framework, CNES, the French Space Agency, is in charge of ensuring compliance with the Technical Regulations associated with the FSOA.
To be able to predict the debris survivability of a space vehicle and its associated fragments during their atmospheric re-entry, CNES in collaboration with R.Tech, develops its re-entry tool with different levels of fidelity, named DEBRISK [1] (certification tool), PAMPERO (spacecraft-oriented tool) [2] and BLIZZARD (Inviscid CFD code) [3].
The work presented here aims to apply these codes to the so-called Delta-II Second Stage re-entry, which occurred on January 22, 1997, and which has been used as a reference case to compare re-entry tool predictions [4, 5].
Trajectories and ground impact locations from initial data are reconstructed, and sensitivity analysis are realized in order to deduce the most probable re-entry scenario. In addition, the estimation of the aerothermodynamics load and the fragmentation/ablation process are analysed. This work's main goal is to validate our re-entry risk verification tools and procedures.
[1] DEBRISK v3: CNES tool evolutions for re-entry risk analysis. Omaly, P., and J. Annaloro. 10th IAASS Conference. 2019.
[2] Van Hauwaert, P, et Al., Pampero v3, a spacecraft-oriented reentry analysis code, 2nd International Conference on Flight Vehicles, Aerothermodynamics and Re-entry Missions & Engineering (FAR), 19 - 23 June 2022. Heilbronn, Germany.
[3] MIDANI, I, et Al., DEVELOPMENT OF A HIGH-FIDELITY SPACECRAFT-ORIENTED TOOL, 2nd International Conference on Flight Vehicles, Aerothermodynamics and Re-entry Missions & Engineering (FAR), 19 - 23 June 2022. Heilbronn, Germany.
[4] Analysis of reentered debris and implication for survivability modeling. William Ailor et al. Proceedings of the 4th European Conference on Space Debris, Darmstadt, Germany, 18-20 April 2005.
[5] Results of the IAASS re-entry analysis test campaign 2012. T. Lips et al. 6th IAASS International Space Safety Conference. May 21-23, 2013, Montreal, Canada.
