H2020 stratofly project: from europe to australia in less than 3 hours - inProceedings Viola, N.; Fusaro, R.; Ferretto, Davide; Gori, Oscar; Saracoglu, Bayindir; Ispir, Ali Can; Schram, Christophe; Grewe, Volker; Plezer, Johannes Friedrich; Martinez, Jan; Marini, Marco; Cutrone, L.; Saccone, G.; Hernandez, Santiago; Lammers, Karel; Vincent, Axel; Hauglustaine, Didier; Liebhardt, Bernd; Linke, Florian; Bodmer, Daniel; Nilsson, Thommie; Fureby, Christer; Ibron, Christian Congress of the International Council of the Aeronautical Sciences (ICAS 2021)