Abstract Propulsion system operation is known to affect the aerodynamic characteristics of rockets. Specifically, net axial force acting on a rocket in flight cannot be precisely obtained by combining static thrust with drag values computed for an inactive motor. One main reasons this influence motor pressure at base rocket. The aim paper investigate effect parameters Grot sounding developed St...

Optimization of Hybrid Rocket Engines at Politecnico di Torino began in the 1990s. A comprehensive review related research activities carried out last three decades is here presented. After a brief introduction that retraces driving motivations and most significant steps path, more relevant aspects analysis, modeling achieved results are illustrated. First, criteria for propulsion system prelim...

The objective of the Boundary Layer Transition (BOLT) flight experiment is to investigate hypersonic boundary-layer transition mechanisms on a low-curvature concave surface with swept leading edge at Mach numbers between five and seven. This shall be achieved during captive-carry an S31/Improved Orion sounding rocket. BOLT project coordinated by U.S. Air Force Research Laboratory Office Scienti...