 Société Européenne de Propulsion (SEP), at Vernon, would later develop the Viking main engines for Ariane.This was made in Germany by Entwicklungsring Nord (ERNO Raumfahrttechnik GmbH), based in Bremen, from 1969.The German consortium itself was known as Arbeitsgemeinschaft Satellitenträgersystem (ASAT), which consisted of ERNO and MBB.