April 30, 2013
Virgin Galactic SpaceShipTwo Breaks The Sound Barrier In First Powered Free-Flight

For the first time, Virgin Galactic’s commercial spaceplane, SpaceShipTwo, fired up its rocket engine in free-flight for 16 seconds during its latest successful drop test which also saw the craft break the sound barrier for the first time. Managed by teams from Scaled Composites and Virgin Galactic, the test begins the final phase of vehicle testing prior to commercial service from Spaceport America in New Mexico. With the the accomplishment of this milestone, Virgin Galatic’s Founder Richard Branson expressed optimism that SpaceShipTwo the company will meet its objective of achieving a flight into space before the end of the year.

“The first powered flight of Virgin Spaceship Enterprise was without any doubt, our single most important flight test to date,” said Virgin Galactic Founder Sir Richard Branson, who was on the ground in Mojave to witness the occasion. “For the first time, we were able to prove the key components of the system, fully integrated and in flight. Today’s supersonic success opens the way for a rapid expansion of the spaceship’s powered flight envelope, with a very realistic goal of full space flight by the year’s end. We saw history in the making today and I couldn’t be more proud of everyone involved.”

The test began at 7:02 a.m. local time when SpaceShipTwo took off from Mojave Air and Space Port mated to WhiteKnightTwo, Virgin Galactic’s carrier aircraft. Piloting SpaceShipTwo were Mark Stucky, pilot, and Mike Alsbury, co-pilot, who are test pilots for Scaled, which built SpaceShipTwo for Virgin Galactic. At the WhiteKnightTwo controls were Virgin Galactic’s Chief Pilot Dave Mackay, assisted by Clint Nichols and Brian Maisler, co-pilot and flight test engineer, respectively, for Scaled.

Upon reaching 47,000 feet altitude and approximately 45 minutes into the flight, SpaceShipTwo was released from WhiteKnightTwo. After cross-checking data and verifying stable control, the pilots triggered ignition of the rocket motor, causing the main oxidizer valve to open and igniters to fire within the fuel case. At this point, SpaceShipTwo was propelled forward and upward to a maximum altitude of 55,000 feet. The entire engine burn lasted 16 seconds, as planned. During this time, SpaceShipTwo went supersonic, achieving Mach 1.2.

“We partnered with Virgin Galactic several years ago with the aspiration to transform and commercialize access to space for the broader public,” said His Excellency Khadem Al Qubaisi, Chairman of aabar Investments PJC. “Today’s test is another key milestone in realizing that aspiration.  Our partnership goes from strength to strength, and is an excellent example of aabar’s desire to participate in the development of world class technologies that are commercially viable and strategically important, both for the company, its shareholders, and for Abu Dhabi.”

The entire rocket-powered flight test lasted just over 10 minutes, culminating in a smooth landing for SS2 in Mojave at approximately 8 a.m. local time.

“The rocket motor ignition went as planned, with the expected burn duration, good engine performance and solid vehicle handling qualities throughout,” said Virgin Galactic President & CEO George Whitesides. “The successful outcome of this test marks a pivotal point for our program. We will now embark on a handful of similar powered flight tests, and then make our first test flight to space.”

In the coming months, the Virgin Galactic and Scaled test team will expand the spaceship’s powered flight envelope culminating in full space flight, which the companies anticipate will take place before the end of 2013.

“I’d like to congratulate the entire team,” said President of Scaled Kevin Mickey. “This milestone has been a long time coming and it’s only through the hard work of the team and the tremendous support of Virgin Galactic that we have been able to witness this important milestone. We look forward to all our upcoming tests and successes.”

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