Design Optimization of the Launch System for the Scramjet Hypersonic Experimental Vehicle (SHEV)

Francesco CASCONE, Pietro RONCIONI, Vincenzo PAOLELLA, Antonio VITALE, Marco MARINI, Sara DI BENEDETTO, Salvatore CARDONE, Marta ALBANO, Giuliano RANUZZI

DOI Number: N/A

Conference number: HiSST-2025-132

This paper presents the comprehensive redesign and optimization of the launch system for the Scramjet Hypersonic Experimental Vehicle (SHEV), conducted within an Italian national project, supported by the national research program PRO.R.A. and the Italian Space Agency (ASI). The primary objective of this redesign was to address significant aerodynamic, structural, and stability challenges identified in the original launch vehicle (LV) configuration. Critical issues included high aerodynamic loads, complex
structural interfaces, difficulties in maintaining aerodynamic stability, and safe separation dynamics between the SHEV and LV at hypersonic speeds. The redesigned configuration incorporates an optimized aerodynamic nose-tip, a repositioned wing structure, enhanced tail placement and scale, and a refined positioning of the SHEV relative to the booster. Aerodynamic assessments by means of Eulerian CFD simulations demonstrated substantial improvements in aerodynamic efficiency and reductions in drag. Stability and trimmability analyses confirmed significant enhancements in both longitudinal and lateral-directional stability throughout the flight trajectory. Interface analyses between
the LV and SHEV showed reduced mechanical complexity and improved reliability, facilitating safer and more precise payload separations. Preliminary trajectory evaluations indicated effective load management under anticipated flight conditions, further confirming the robustness of the new design. Comparative analyses highlighted notable advancements over the original configuration, particularly improved aerodynamic stability margins, reduced structural loads, and enhanced maneuverability. Overall, the redesigned LV configuration substantially improves mission reliability and effectiveness, marking a significant advancement towards the practical development of hypersonic propulsion
technologies and setting a foundation for future operational hypersonic vehicle missions.

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Aerodynamic Database, Aerodynamic Optimization, hypersonic flight, Launch System Optimization, Scramjet Propulsion

In Categories: 1.Events, 1.HiSST 2025, Hypersonic Fundamentals & History

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