Aerodynamic performance analysis of three different vehicle concepts

摘要

The paper deals with the aerodynamic performance analysis of three reusable and unmanned flying laboratories designed to perform a return flight from low Earth orbit to provide experimental data in the framework of re-entry technologies. Several design approaches, ranging from low-order methods to computational fluid dynamics analyses, have been addressed in this work. In particular, vehicles aerodynamic performances for a wide range of free stream flow conditions, from subsonic to hypersonic regime, including reacting and non-reacting flow and different angles of attack have been provided and in some cases compared. Computational fluid dynamics results confirm that real gas effects seem to be i fundamental for the assessment of the concept aerodynamics, especially concerning pitching moment evaluation.