With the month of August upon us and no sign of relief from the oppressive desert heat, Mojave has at least one thing to look forward to: the first SpaceShipTwo flights in nearly two years.
Virgin Galactic officials have said they expect to begin flight tests of its second SpaceShipTwo vehicle sometime this month. The test program will begin with captive carry flights aboard the WhiteKnightTwo carrier aircraft followed by glide flights. Powered tests are expected in 2017.
Five months and 14 days since Richard Branson rolled out the second SpaceShipTwo inside the Virgin Galactic hangar here in Mojave on Feb. 19. That might sound like a long gap, but it’s pretty normal for this program. The first SpaceShipTwo and WhiteKnightTwo were rolled out many months before they took to the skies.
The selection of roll out dates appears to have more to do with public relations than flight readiness. For example, the February roll out came on the first birthday of Richard Branson’s granddaughter, Eva-Deia. The tiny tyke was on hand in Mojave to help christen the new spacecraft Unity with a bottle of milk.
Let’s take a closer look at roll out and flight dates.
- Roll Out Date: July 28, 2008
- First Flight: Dec 21, 2008
- Time Between Roll Out & First Flight: 4 months, 24 days
SpaceShipTwo No. 1
- Roll Out Date: Dec. 7, 2009
- First Captive Carry without Crew: March 22, 2010
- First Captive Carry with Crew: July 15, 2010
- First Glide Flight: Oct. 10, 2010
- First Powered Flight: April 29, 2013
- Final Flight: Oct. 31, 2014
- Time Between Roll Out & First Captive Carry Flight without Crew: 3 months, 16 days
- Time Between Roll Out & First Captive Carry Flight with Crew: 7 months, 9 days
- Time Between Roll Out & First Glide Flight: 10 months, 4 days
- Time Between Roll Out & First Powered Flight: 3 years, 4 months, 23 days
- Time Between Roll Out and Final Flight: 4 years, 10 months, 25 days
There are a few things to note about the roll out and flight dates above.
WhiteKnightTwo was rolled out 1 year and 2 days after a fatal test stand explosion that left three Scaled Composites engineers dead and three others hospitalized with serious injuries. The roll out event showed progress in the program and overshadowed unresolved questions about the cause of the accident, Scaled Composites’s test stand procedures, and the safety of SpaceShipTwo’s engine.
WhiteKnightTwo’s first flight came four days before Christmas 2008 while the rollout of the first SpaceShipTwo was done earlier in December during the following year. Those achievements allowed the program to end those years on high notes. (Although Virgin Galactic narrowly avoided disaster during the 2009 roll out when high winds ripped apart tents it had set up for guests.)
More than seven months passed between SpaceShipTwo’s roll out and the first captive carry flight with a crew aboard. And it was just over 10 months between the roll out and the first glide flight.
As a sign of how badly engine development lagged behind vehicle development, nearly three years and five months passed between roll out and the first powered flight on April 29, 2013. The spacecraft crashed 18 months on only its fourth powered flight.