Project of Ariane 5 LV family advancement by use of reusable fly-back boosters (named “Bargouzine”)

The paper concerns possible concept variants of a partially reusable Heavy-Lift Launch Vehicle derived from the advanced basic launcher (Ariane-2010) by means of substitution of the EAP Solid Rocket Boosters for a Reusable Starting Stage consisting two Liquid-propellant Reusable Fly-Back Boosters called “Bargouzin”.This paper describes the status of the presently studied RFBB concepts during its three phases.The first project phase was dedicated to feasibility expertise of liquid-rocket reusable fly-back boosters (“Baikal” type) utilization for heavy-lift space launch vehicle. The design features and main conclusions are presented.The second phase has been performed with the purpose of selection of preferable concept among the alternative ones for the future Ariane LV modernization by using RFBB instead of EAP Boosters. The main requirements, logic of work, possible configuration and conclusion are presented. Initial aerodynamic, ballistic, thermoloading, dynamic loading, trade-off and comparison analysis have been performed on these concepts.The third phase consists in performing a more detailed expertise of the chosen LV concept. This part summarizes some of the more detailed results related to flight performance, system mass, thermoprotection system, aspects of technologies, ground complex modification, comparison analyses and conclusion.