Virgin boss hits out after safety warning claim

2014-11-03 19:13
The Virgin Galactic SpaceShipTwo rocket separates from the carrier aircraft prior to it exploding in the air during a test. (Kenneth Brown, AP)

The Virgin Galactic SpaceShipTwo rocket separates from the carrier aircraft prior to it exploding in the air during a test. (Kenneth Brown, AP)

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London - Virgin Galactic boss Richard Branson hit out against "hurtful" critics and "self-proclaimed experts" on Monday after a rocket scientist said that the company had ignored safety warnings ahead of the deadly crash of one of its spacecraft.

Branson said the evidence showed there had been "no explosion" behind the SpaceShipTwo accident in the United States last Friday.

He vowed to push on with the project, while investigators pored over the wreckage in the Mojave Desert in California for clues.

"I've never seen such irresponsible innuendo and damaging innuendo," the British business tycoon told Sky News television, referring to critical press reports in Britain.

"The fuel tanks and the engine were intact, showing there was no explosion, despite a lot of self-proclaimed experts saying that was the cause," he said.

Investigators on Sunday pointed out that a lock-unlock lever used to activate a process in the spaceship's tail section had been moved by the co-pilot prematurely although they emphasised the cause of the accident had not been established.

Carolynne Campbell, an expert with the Netherlands-based International Association for the Advancement of Space Safety, also on Sunday told AFP that she and other experts "were concerned about what was going on at Virgin Galactic".

She said that multiple warnings about the spacecraft's motor and the fuel used to power it had been issued to Virgin since 2007, when three engineers died testing a rocket on the ground.

"I warned them... that the rocket motor was potentially dangerous," she said.

Campbell's warnings related to nitrous oxide, reportedly used as a fuel component in the doomed craft along with a new substance derived from nylon plastic grains.

We must push on

Branson wants to ferry wealthy customers to the edge of space, charging $250 000 per ticket, and the crash is expected to delay the programme.

"It's a grand program which has had a horrible setback," he said in a separate interview on NBC's Today show.

In his Sky News interview, he said: "We must push on."

"I'm absolutely convinced that Virgin Galactic has a great future once the NTSB [US National Transportation Safety Board] has made clear exactly what happened," he said.

"If we had had an accident once we'd actually started carrying passengers in the early days it would be very difficult to recover from that. I hope this is slightly different.

"We have test pilots testing the aircraft in very extreme situations to make sure it is safe for passengers," he said.

But he stressed he would personally test the flight first.

"We will not fly members of the public unless we can fly myself and family members," he said.

A team of NTSB investigators has been deployed to the site of the crash, in which pilot Michael Alsbury was killed and co-pilot Pete Siebold was seriously injured.

NTSB acting chair Christopher Hart told reporters on Sunday that a camera in the cockpit showed a lever had been moved by the co-pilot while the vehicle was travelling at a speed just above approximately Mach 1.0.

The lever, Hart said, was not supposed to be moved until reaching a speed of Mach 1.4.

"I am not stating this was the cause of this mishap. We have months and months of investigation to determine what the cause was," Hart said.

He added that investigators had found almost all important parts of the space vehicle, including fuel tanks, the oxidizer tank and engine, which were all intact.

One-year investigation

Witnesses to Friday's crash say there was no obvious sign of an explosion before the suborbital craft broke apart and hurtled to earth shortly after it had detached from a mothership at an altitude of around 13 700m.

The crash was the second disaster to rock the private sector space industry in less than a week, after an Antares rocket carrying supplies to the International Space Station exploded after take-off in Virginia on Tuesday.

Experts say the accident will delay the advent of commercial space tourism by several years.

Hart said on-site investigations would last up to a week but the full probe piecing together facts and analysis "will be probably 12 months or so".

Wreckage from the crash was strewn over eight kilometres, according to Hart, who added that investigators hoped to find clues to the causes of the crash from the reams of data and video footage expected to be available.

Read more on:    virgin galactic  |  richard branson  |  us  |  space

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