Space

Virgin Galactic's spaceplane hits new heights in second powered flight

Virgin Galactic's spaceplane h...
Virgin Galactic's spaceplane in action
Virgin Galactic's spaceplane in action
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Final inspections of Virgin Galactic's spaceplane before the latest testing
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Final inspections of Virgin Galactic's spaceplane before the latest testing
View inside the cockpit during Virgin Galactic's latest testing of its spaceplane
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View inside the cockpit during Virgin Galactic's latest testing of its spaceplane
Founder Richard Branson looks on during Virgin Galactic's latest testing of its spaceplane
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Founder Richard Branson looks on during Virgin Galactic's latest testing of its spaceplane
Virgin Galactic's spaceplane in action
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Virgin Galactic's spaceplane in action
Virgin Galactic's spaceplane and mothership takes off in California
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Virgin Galactic's spaceplane and mothership takes off in California
Virgin Galactic's spaceplane takes off in California
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Virgin Galactic's spaceplane takes off in California
Virgin Galactic's spaceplane soon after detaching from its mothership
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Virgin Galactic's spaceplane soon after detaching from its mothership
Virgin Galactic's spaceplane with its tail booms deployed
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Virgin Galactic's spaceplane with its tail booms deployed
Virgin Galactic's spaceplane touches down safely after its second powered test flight
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Virgin Galactic's spaceplane touches down safely after its second powered test flight
Virgin Galactic's spaceplane glides towards the tarmac
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Virgin Galactic's spaceplane glides towards the tarmac
Virgin Galactic's spaceplane is carried into the air by its mothership
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Virgin Galactic's spaceplane is carried into the air by its mothership
Richard Branson and Virgin Galactic pilot Mark "Forger" Stucky debrief after the second powered test flight
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Richard Branson and Virgin Galactic pilot Mark "Forger" Stucky debrief after the second powered test flight

Virgin Galactic has shown the first firing of its spaceplane's chemical rocket engine was no fluke, following last month's effort with another successful outing in California. The latest test flight took the tourist-carrying space vehicle a little closer to space, literally and figuratively, with engineers now poring over data with an eye to the next round of testing.

Where some private space companies, such as Blue Origin, imagine firing tourists into space with conventional launch vehicles that blast off from the ground, Virgin Galactic's SpaceShipTwo VSS Unity works a little differently.

During the test flight last month, it was carried into the air by a mothership called WhiteKnightTwo and released at an altitude of 46,500 ft (14,173 m). Seconds later, its hybrid rocket engine was fired up for around 30 seconds to propel the plane to roughly Mach 1.9 (2,328 kph/1,446 mph) and an altitude of 84,271 ft (25,686 m).

Virgin Galactic's spaceplane and mothership takes off in California
Virgin Galactic's spaceplane and mothership takes off in California

Today's second test flight played out pretty similarly, but was set up to observe the behavior of the plane in a setup that will more closely resemble its final commercial configuration. That means its center of gravity was moved backward as passenger seats and accompanying gear were added to the cabin.

The plane also traveled higher this time, reaching an altitude 114,500 ft (35 km). According to the US Air Force standards, space begins at 264,000 ft (80.5 km), but the Kármán line, at an altitude of 330,000 ft (100 km), is the most commonly used boundary representing the start of space. It's not clear which metric Virgin Galactic prefers, but it ultimately plans to carry paying passengers to suborbital altitudes in the future.

"Today we saw VSS Unity in her natural environment, flying fast under rocket power and with a nose pointing firmly towards the black sky of space," said founder Richard Branson, who was on hand at the company's Mojave base to witness the test flights. "The pathway that Unity is forging is one that many thousands of us will take over time, and will help share a perspective that is crucial to solving some of humanity's toughest challenges on planet Earth."

After reaching supersonic speeds, the engines were shut down and the plane's re-entry feathering system was engaged. This mechanism is a point of sensitivity for Virgin Galactic, as the premature deployment of its tail booms led to a fatal test flight in 2014.

Virgin Galactic's spaceplane with its tail booms deployed
Virgin Galactic's spaceplane with its tail booms deployed

The company has since incorporated new safety devices into the tail booms and they worked as desired today (as they did last month), deploying at 60-degree angles and slowing the plane on its way down. It then glided safely to the tarmac and made a conventional, flawless landing.

Virgin Galactic's engineers are now reviewing the flight data and planning the next outing for the high-flying spaceplane. This is expected to be the final phase of testing for the SpaceShipTwo VSS Unity before it enters service. The company hasn't offered an exact timeline for when it will be complete, but Branson indicated to CNBC afterwards that it mightn't be long.

"It will be something like two or three more flights before we're actually in space," he told the network, also mentioning that once they have a safe craft that can go above 264,000 ft, he will go up himself and then soon after, astronauts will follow.

Branson also revealed this week that he is ramping up his personal astronaut training with hopes of launching himself into space within months.

Check out the video of Virgin Galactic's latest test flight below.

Source: Virgin Galactic

Richard Branson Welcomes VSS Unity Home from Second Supersonic Flight

3 comments
ljaques
Bravo! Keep 'em coming, Richard. But...did anyone else notice the considerable pitch and roll oscillations it appeared to have, both on the way up under power and on the way down, sans power? Was it the pilot testing controls or trying to control the oscillations? Whichever, it seemed excessive and potentially dangerous.
WolfeSA
Now that the race is on lets see what tech gets developed!
Leonard Foster Jr
I noticed it also pitch and roll, but this could have been from the lower level flight in thick atmosphere?