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: For a report out today , the Wall Street Journal interviewed engineers and a government official connected to Virgin Galactic who said that founder Richard Branson's ambitious timelines for flying SpaceShipTwo went against the recommendations of the technical team. The project was plagued by more problems than outsiders knew, according to the Journal, which said: "Without a firm design, there was no way to reliably predict when the first passengers would make it to space for more than $200,000 a ticket.": The NTSB released a statement today saying that investigators had interviewed surviving SpaceShipTwo pilot Pete Siebold. Siebold confirmed that he had been thrown clear of SpaceShipTwo as it broke up at high altitude, and that he had managed to unbuckle himself from his seat before his parachute deployed automatically at lower altitude. He said he did not remember co-pilot Mike Alsbury moving the lever that unlocked the ship's feather system.The NTSB is now focusing its investigation of the crash on "the aerodynamic and inertial forces that acted on the vehicle" after SpaceShipTwo's rocket engine fired. It seems clear that it is those forces that ripped the craft apart after the feather deployed prematurely, spoiling the ship's optimal shape for rocketing through the atmosphere.We still don't know why Alsbury unlocked the feather too early in the flight. One possibility is that faulty cockpit displays were somehow to blame. The NTSB team "continues to review available data for the vehicle's systems (flight controls, displays, environmental control, etc.)," according to today's statement. "The group is also reviewing design data for the feather system components and the systems safety documentation." Virgin Galactics SpaceShipTwo dropped from its mothership at an altitude of 45,000 feet over Mojave, Calif. and fired its single hybrid rocket engine for its fourth-ever powered flight. A few seconds into the burn, according to an eyewitness account, the craft experienced what Mojave Air and Space Port manager Stu Witt would later call "an in-flight anomaly."Witt said at a press conference after the disaster that he didnt see an explosion and he didnt see anything abnormal in the rocket plume. He knew something was wrong only "when other things werent happening," he said. "It wasnt because something did happenit was what I was not hearing and not seeing. If there was a huge explosion, I didnt see it."The ship apparently dropped out of the sky in silence, with its engine off, and crashed into the desert some 25 miles north of Mojave.The two pilots on board were employees of Scaled Composites, the company that built SpaceShipTwo for Virgin Galactic. One of them managed to parachute to the ground. He was injured badly enough to require a helicopter evacuation to a nearby hospital.The other pilot apparently died on impact, according to Kern County Sheriff Donny Youngblood. He said in the press conference that he overflew the crash site shortly after the accident. "The aircraft is in several different pieces," he said. "We found one person who obviously was deceased immediately."This test flight was the first for a new kind of fuel a plastic similar to nylon. Previously, SpaceShipTwo had used a synthetic rubber fuel, one that had been giving giving engineers trouble for years as they tried to scale up the successful 3-seat SpaceShipOne prototype, which won the X Prize in 2004, to a much bigger vehicle using the same hybrid rocket design and fuel, and meant to carry tourists to suborbital space.Scaled Composites president Kevin Mickey downplayed any role that the new fuel might have had in the crash. "We were flying a rocket motor today that had been thoroughly tested on the ground and had been through a qualification series, and of course we expected no anomalies with the motor today." He called the fuel a "small nuance to the rocket motor design."SpaceShipTwo was supposed to be the ship that commercialized spaceflight in a big way, carrying six paying passengers at a time for a few minutes of weightless flight and a view of the curvature of the Earth set against the backdrop of space. Virgin Group chief Richard Branson, who financed construction of the ship, has said he would personally inaugurate service to space within the next few months.The SpaceShipTwo that wrecked was a total loss. So, to recover from this severe setback will require building a new vehicle. Before that can happen, though, investigators will have to figure out exactly what went wrong. Mickey said that officials from the National Transportation Safety Board would arrive early Saturday morning to begin that job.Were left to wonder what impact the accident will have on the nascent commercial spaceflight industry, which Branson has been working hard to characterize as safe. Fridays crash is a stark reminder that spaceflight is an inherently risky endeavor.Witt encouraged everyone working in the industry to keep moving forward despite the pain of losing a member of what he said described as the very small test community. "My message to them is, stay the course," he said. "This business is worthy business.", Sunday, Nov. 2: The pilot who was killed in the SpaceShipTwo crash has been identified as Michael Alsbury, a 14-year veteran of Scaled Composites. He was the co-pilot of SpaceShipTwo for this test flight. Pilot Peter Siebold, who is Scaled Composites' director of flight operations (who also flew SpaceShipOne in 2004) managed to bail out and survived a parachute landing. He is undergoing treatment for his injuries. A statement from Scaled Composites released on Saturday said he was alert and able to talk to friends and his doctors.Richard Branson said in a brief press conference in Mojave on Saturday that he and Virgin Galactic would not "push on blindly" with the SpaceShipTwo program. "To do so would be an insult to all those affected by this tragedy." He said the program would continue only if, after finding out what went wrong, "we can overcome it." National Transportation Safety Board (NTSB) investigators arrived on the scene early Saturday morning and got to work examining the crash site and cataloging the data available, including video from cameras on the spaceship, the WhiteKnightTwo mothership, and a chase plane, as well as telemetry, and radar info. They have begun interviewing engineers and flight controllers.NTSB acting chairman Christopher Hart said in a press conference Saturday night that the crash debris covered an area of about five miles, which was consistent with an in-flight breakup. "When the debris field spans that large an area, then we know there was an in-flight separation," Hart said. "If it had crashed together then all the pieces would be close to each other. But that spread of the debris field tells us that it was an in-flight separation, and of course the question then is, why did that happen, so that's what we are exploring. That's what our investigators are examining." ||||| Executives said after the crash that the new motor and fuel had been thoroughly tested on the ground before the rocket plane took off, suspended under its carrier plane, WhiteKnightTwo, shortly after 9 a.m. Friday from the Mojave Air and Space Port, about 100 miles northeast of Los Angeles. ||||| SpaceShipTwo, a rocket plane that was meant to carry well-heeled tourists on short if expensive rides to space, crashed in the Mojave Desert on Friday during a test flight, killing one of the two pilots. 
  
 The pilots, who have not yet been identified, were flying the plane for Virgin Galactic, the space tourism company created by the entrepreneur Richard Branson, and Scaled Composites, the company that designed and built the plane. 
  
 One pilot was able to parachute from the plane and was taken to a hospital with “moderate to major injuries,” said Ray Pruitt, the public information officer for the Kern County sheriff’s office in California. 
  
 The test was the first time SpaceShipTwo had flown using a new, plastic-based rocket fuel. 
  
 It was the second major accident in a week for the commercial space industry, which has been widely promoted in recent years as an alternative to costly government programs. On Tuesday, an unmanned rocket launched by Orbital Sciences Corporation of Dulles, Va., which was carrying cargo to the International Space Station, exploded 15 seconds after launching. |||||
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Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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The National Transportation Safety Board has taken the lead in trying to figure out what doomed Virgin Galactic's SpaceShipTwo yesterday, and the Los Angeles Times notes that it's a milestone of sorts in the new world of commercial space travel. This marks the first time the NTSB has led an inquiry into a manned space launch. Investigators were fanning out across the crash site in the Mojave Desert today gathering evidence in the crash that killed one pilot and seriously injured another; the dead pilot has been identified as Michael Alsbury, 39, the BBC reports. Yesterday's test flight was the first in which the spacecraft used a new type of fuel, one based on a plastic similar to nylon, reports Popular Mechanics. Virgin Galactic previously used a rubber-based fuel. The space plane also was testing a new motor, though authorities aren't yet suggesting either played a role. "Yesterday, we fell short," said Virgin Galactic founder Richard Branson, who has arrived in California. "We will now comprehensively assess the results of the crash and are determined to learn from this and move forward together." His company had planned to start ferrying tourists to the edge of space next spring, and the New York Times reports that it's too early to tell what effect yesterday's disaster will have on the timeline. (Among the celebs with reservations is Lady Gaga.)