Editing SpaceShipTwo (section)

==== Testing VSS ''Enterprise'' ====
In September 2012, Virgin Galactic announced that the unpowered [[subsonic flight|subsonic]] glide flight test program was essentially complete.<ref>Rosenberg, Zach; [http://www.flightglobal.com/news/articles/virgin-galactic-finishes-unpowered-flight-test-376475/ "Virgin Galactic finishes unpowered flight test"] FlightGlobal 13 September 2012 Retrieved 26 September 2012</ref> In October 2012, Scaled Composites installed key components of the rocket engine, and SpaceShipTwo performed its first glide flight with the engine installed in December 2012.<ref name=December2012Testing/><ref>{{cite web|url=http://www.aviationweek.com/Article.aspx?id=/article-xml/asd_10_22_2012_p04-01-509022.xml|title=SpaceShipTwo Fitted With Rocket Propulsion System|publisher=Aviation Week|date=22 October 2012|access-date=14 November 2012|archive-date=12 October 2013|archive-url=https://web.archive.org/web/20131012173343/http://www.aviationweek.com/Article.aspx?id=/article-xml/asd_10_22_2012_p04-01-509022.xml|url-status=dead}}</ref>

The spacecraft's first powered test flight took place on 29 April 2013. SpaceshipTwo reached supersonic speeds in this first powered flight.<ref name=scaledTestLogs>{{cite web|title=SpaceShipTwo Test Summaries |url=http://www.scaled.com/projects/test_logs/35/model_339_spaceshiptwo|publisher=[[Scaled Composites]]|access-date=14 August 2013|date=8 August 2013|archive-url=https://web.archive.org/web/20130816140953/http://www.scaled.com/projects/test_logs/35/model_339_spaceshiptwo|archive-date=16 August 2013|url-status=dead}}</ref><ref name=VG130429>{{cite web|title=Virgin Galactic Breaks Speed of Sound in First Rocket-Powered Flight of SpaceShipTwo|url=http://www.virgingalactic.com/news/item/virgin-galactic-breaks-speed-of-sound-in-first-rocket-powered-flight-of-spaceshiptwo/ |publisher=Virgin Galactic|access-date=29 April 2013|date=29 April 2013|url-status=dead|archive-url=https://web.archive.org/web/20130430085117/http://www.virgingalactic.com/news/item/virgin-galactic-breaks-speed-of-sound-in-first-rocket-powered-flight-of-spaceshiptwo/|archive-date=30 April 2013}}</ref> On 5 September 2013, the second powered flight was made by SpaceShipTwo.<ref>{{cite web|title=Virgin Galactic's SpaceShipTwo Succeeds in Second Rocket-Powered Flight|url=https://www.forbes.com/sites/alexknapp/2013/09/05/virgin-galactics-spaceshiptwo-succeeds-in-second-rocket-powered-flight/|work=Forbes|access-date=6 September 2013}}</ref> The first powered test flight of 2014 — and third overall — occurred 10 January 2014. The spacecraft reached an altitude of {{cvt|22000|m}} and a speed of {{cvt|1.4|Mach}}. The WhiteKnightTwo carrier aircraft released SpaceShipTwo (VSS ''Enterprise'') at an altitude of {{cvt|14000|m}}.<ref>{{cite web|url=http://www.universetoday.com/107979/spaceshiptwo-goes-supersonic-in-third-test-flight/|title=SpaceShipTwo Goes Supersonic in Third Rocket-Powered Test Flight|author=Nancy Atkinson|publisher=Universe Today|date=10 January 2014}}</ref>