Cryogenic flows end-to-end fluid simulations for CALLISTO demonstrator

Kurzfassung

The CALLISTO vehicle is a flight demonstrator for future reusable launcher stages. The program involves three countries and their space organizations: CNES for France, DLR for Germany and JAXA for Japan. The first tests will be conducted in 2024 from the CSG, Europe's Spaceport for commercial launches. The challenge is to develop, all along the project, the skills of the partners. This know-how includes Products and Vehicle design, Ground Segment set up, and post-flight operations for Vehicle recovery then reuse. Designing and operating such a vehicle and its associated launch base requires a perfect match between vehicle needs and ground equipment specifications. In this paper, LOx and LH2 flow behavior during three major phases before lift-off is analysed through ground/vehicle coupled simulations. The LH2 analysis is completed by and compared to a more detailed tank simulation. The results of these analyses are then used to create technical specifications for ground segment components design.