Ariane 6 – Article

Good article on genesis of Ariane 6 configuration and its challenges. In the beginning, Ariane 6 was supposed to be modular. At this stage, it seems to have only one configuration at 6.5T GTO. That’s a pitty…Specially now that developments in electric propulsion could change satellite masses dramatically (up to – 50% – of course with increase in time to orbit…)

http://armchairengineer.blogspot.fr/2014/02/ariane-6-where-does-it-come-from-and.html