AERODYNAMIC ANALYSIS WITH SEPARATION DYNAMICS OF A LAUNCHER AT STAGING CONDITIONS

摘要

This paper deals with launcher aerodynamicdesign activities at phase-A level. The goal is toaddress the preliminary aerodynamic databaseof a next generation launch vehicle as input forperformances evaluations as well as launchercontrol, sizing, and staging.In this framework, different design approachesare considered. Indeed, steady computationalfluid dynamics (CFD), with both Euler andNavier-Stokes approximations, are carried outto assess launcher aerodynamics. On the otherhand, a coupled approach between unsteadyCFD and a six degree-of-freedom trajectoryanalysis are exploited to address boosterseparation dynamics at staging conditions.