Y. Berest, F. Moine, T. Aujames, C. Finzi

DOI Number: N/A

Conference numer: HiSST-2025-101

ArianeGroup know how in solid propulsion, guidance systems and launcher design has been condensed in the new sounding rocket family, SyLEx designed for hypersonic flights and microgravity researches. This single or two stages vehicle offers high performances and large payload accommodation capabilities, along with various services such as jettisonable fairing, attitude control, telemetry and two customer zones for experiments (Fairing zone with clamshell release + Experimental case zone). SyLEx Maiden flight is scheduled in 2025 from Biscarrosse (South West of France) test range, paving the way for future European cooperation and research for both civilian and defence applications. The SyLEx rocket family is based on ArianeGroup’s new 2-ton class motor named “SPARK”. This advanced motor provides Europe with enhanced flight domain capabilities:

  • Reaching up to 7 or 5 minutes of microgravity condition for a maximum payload of 600 kg in respectively a single-stage or two stages configuration
  • Achieving over 1200 or 2400 m/s re-entry velocity @120km in respectively a single-stage or two stages configuration Sounding rocket flight dynamics is a complex discipline, requiring a deep understanding of numerous phenomena to achieve predictable rocket behavior and minimize fallout scattering areas. ArianeGroup’s modelling expertise has been extensively employed to address challenges such as roll locking and aero elasticity, while also investigating the impact of physical parameters on trajectory. These comprehensive models – involving aerodynamic, mechanical, and 6-DOF flight computation – enable accurate prediction of sounding rocket flight paths, thereby enhancing mission safety. Throughout the development process, ArianeGroup successfully tackled these challenges within an ambitious three-year timeframe. The resulting system is robust, high-performing, and designed to meet European civilian and defence stakeholders’ needs for early-stage flight validations or in situ measurements supporting fundamental research and technological advancement.

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In Categories: 1.Events, 1.HiSST 2025, High-Speed Missions and Vehicles
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