 The first successful flight of the (partially redesigned) Vulcain 2 occurred in 2005 on flight 521.On 17 June 2007 Volvo Aero announced that in spring of 2008 it expected to hot-fire test a Vulcain 2 nozzle manufactured with a new "sandwich" technology.The development of the future version for Ariane 6, Vulcain 2.1, began in 2014.