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ROCKET SCIENCE
SpaceX sets launch date for Falcon 9 RTF
by Staff Writers
Washington DC (AFP) Jan 03, 2017


File image.

SpaceX says it has determined the cause of a launchpad explosion that destroyed a satellite in September and is ready to start launches again as early as Sunday.

An unmanned SpaceX Falcon 9 rocket exploded September 1 in Cape Canaveral, destroying a satellite that Facebook planned to use to beam high-speed internet to Africa.

That marked a setback for the California-based private space firm and its founder Elon Musk, who wants to revolutionize the launch industry by making rocket components reusable.

In a statement Monday, SpaceX said it had traced the problem to a pressure vessel in the second-stage liquid oxygen tank. It said it will change the way it fuels for now, and in the future will redesign its pressure vessels.

SpaceX said it hopes to launch 10 Iridium NEXT communications satellites from a base in California on Sunday.

The Federal Aviation Administration has to approve the conclusions of the SpaceX investigation of the September failure.

That accident -- the second of its kind since SpaceX was founded in 2002 -- came just over a year after a Falcon 9 rocket failed after liftoff on June 28, 2015, destroying a Dragon cargo capsule bound for the International Space Station.

Before that, SpaceX had logged 18 successful launches of the Falcon 9 -- including six of 12 planned supply missions to the ISS carried out as part of a $1.6 billion contract with NASA.

It carried out another eight successful launches since June 2015, including in August of last year when a Falcon 9 successfully placed a Japanese communications satellite in orbit, and then landed intact on a floating drone ship.

Before then the firm lost several rockets as it attempted to land them upright on an ocean platform at the end of a flight -- a crucial part of its strategy for reusable spacecraft.

related Sputnik Newsreport
SpaceX Falcon Transport System Builds on NASA Research, Technology
The SpaceX Falcon's cargo transportation system is based on decades' worth of space-launch research and development by the National Aeronautics and Space Administration (NASA) and is not a new commercial advance, former NASA administrator Sean O'Keefe told Sputnik (Nov, 2016 report).

Commercialization of the space cargo industry has been on the drawing board for more than 15 years, since NASA realized it was too expensive to use the Space Shuttle to haul cargo to the completed International Space Station (ISS), O'Keefe explained.

"SpaceX is getting a significant marginal improvement out of existing technology capabilities," O'Keefe said.

"It is not a new fuel, not a new technology lift capacity, but it's using basically the same principles but on a more cost-effective basis employing major technology improvements - basically doing it the way NASA has done it for the last 40-50 years."

"If you think about how long this has been coming - and now we are talking about doing the cargo replenishment to the ISS - we have been working on this for the better part of 15 years and it has been a while in the making," O'Keefe stated.

The progress that SpaceX, the California-based company led by Elon Musk, has made in economizing rocket booster recovery is impressive, O'Keefe asserted. "The idea of landing the boosters on a platform at sea is a big technology improvement," O'Keefe said.

"SpaceX has figured out how to do that without the pain-in-the-neck logistical nightmare of recovering the boosters at sea, bringing them back in, and doing a big refurbishment and all that stuff." As remarkable as SpaceX's innovations are, it is not ready to send humans into space atop its Falcon rocket, the former NASA chief said.

"Once you start talking about human exploration, now you are into NASA-land and it becomes the same challenge NASA has had from day one," O'Keefe stated. Once people are inside a space capsule atop a rocket engine, the consequences become "real," he said.

On September 1, a SpaceX-built Falcon 9 rocket with a commercial satellite on board exploded during fueling on the launch pad at the Cape Canaveral Air Force Station in Florida. A cause for the explosion I yet to be determined, the company has said.

Source: Sputnik News


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Previous Report
ROCKET SCIENCE
SpaceX concluded accident investigation, to start launching rockets again
Hawthorne, Calif. (UPI) Jan 2, 2017
SpaceX has identified the anomaly responsible for the explosion of its Falcon 9 rocket on Sept. 1, 2016, and is now ready to resume its launch schedule starting Jan. 8. Investigators concluded the explosion was caused by a cascade of material failures and corrosive events triggered by rapid temperature and pressure changes. Broken carbon fibers in one of the composite overwrapped pressu ... read more


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