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posted by CoolHand on Wednesday November 02 2016, @07:57PM   Printer-friendly
from the laughing-in-the-face-of-danger dept.

Experts advising NASA are not impressed with SpaceX's plan to fuel rockets while astronauts are aboard, particularly in the wake of the September 1st explosion:

"This is a hazardous operation," Space Station Advisory Committee Chairman Thomas Stafford, a former NASA astronaut and retired Air Force general, said during a conference call on Monday. Stafford said the group's concerns were heightened after an explosion of an unmanned SpaceX rocket while it was being fueled on Sept. 1. Causes of that explosion remain under investigation.

Members of the eight-member group, including veterans of NASA's Gemini, Apollo and space shuttle programs, noted that all previous rockets carrying people into space were fueled before astronauts got to the launch pad. "Everybody there, and particularly the people who had experience over the years, said nobody is ever near the pad when they fuel a booster," Stafford said, referring to an earlier briefing the group had about SpaceX's proposed fueling procedure.

SpaceX needs NASA approval of its launch system before it can put astronauts into space. NASA said on Tuesday it was "continuing its evaluation of the SpaceX concept for fueling the Falcon 9 for commercial crew launches. The results of the company's Sept. 1 mishap investigation will be incorporated into NASA's evaluation."

SpaceX posted updates about the explosion on Oct. 28. The helium loading system appears to have caused the problem. SpaceX wants to resume launches before the end of the year.


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  • (Score: 2) by Some call me Tim on Thursday November 03 2016, @05:06AM

    by Some call me Tim (5819) on Thursday November 03 2016, @05:06AM (#421929)

    From what I've found in brief searches, SpaceX is using carbon composite over wrapped pressure vessels inside the LOX tank. Why the heck would you subject that stuff to cryogenic temperatures considering the heat generated when pressurizing and the extreme cold? Having worked on rockets, all the pressure vessels I've seen were Titanium spheres that were protected from temperature extremes.

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  • (Score: 0) by Anonymous Coward on Thursday November 03 2016, @06:41AM

    by Anonymous Coward on Thursday November 03 2016, @06:41AM (#421953)

    Maybe the carbon composite weighs less than the titanium? It's all about getting that weight down.