Feasibility of High Thrust Bleed Cycle Engines for Reusable Booster Applications

Abstract

Based on results of an earlier cycle analysis, an improved engine variant of a high thrust, cryogenic bleed cycle engine is analyzed. Its performance is calculated, and a preliminary engine sizing and mass analysis is carried out. Improvement options as well as growth potential of the cycle is investigated with special regard to the critical heat-transfer in the thrust chamber region. Finally, an ascent trajectory optimization and a discussion of the complete vehicle are performed to evaluate the engines as part of a future semi reusable launch system.