Heliumsystem har skylden for eksplosion fortæller #Spacex

September 23, 1:00pm EDT

Three weeks ago, SpaceX experienced an anomaly at our Launch Complex 40 (LC-40) at Cape Canaveral Air Force Station. This resulted in the loss of one of our Falcon 9 rockets and its payload.

The Accident Investigation Team (AIT), composed of SpaceX, the FAA, NASA, the U.S. Air Force, and industry experts, are currently scouring through approximately 3,000 channels of engineering data along with video, audio and imagery. The timeline of the event is extremely short – from first signs of an anomaly to loss of data is about 93 milliseconds or less than 1/10th of a second. The majority of debris from the incident has been recovered, photographed, labeled and catalogued, and is now in a hangar for inspection and use during the investigation.

At this stage of the investigation, preliminary review of the data and debris suggests that a large breach in the cryogenic helium system of the second stage liquid oxygen tank took place. All plausible causes are being tracked in an extensive fault tree and carefully investigated. Through the fault tree and data review process, we have exonerated any connection with last year’s CRS-7 mishap.

The teams have continued inspections of LC-40 and the surrounding facilities. While substantial areas of the pad systems were affected, the Falcon Support Building adjacent to the pad was unaffected, and per standard procedure was unoccupied at the time of the anomaly. The new liquid oxygen farm – e.g. the tanks and plumbing that hold our super-chilled liquid oxygen – was unaffected and remains in good working order. The RP-1 (kerosene) fuel farm was also largely unaffected. The pad’s control systems are also in relatively good condition.

SpaceX’s other facilities, from the Payload Processing Facility at the Cape, to the pad and hangar at LC-39A, are located several miles from LC-40 and were unaffected as well. Work continues at Pad 39A in preparation for bringing it online in November. The teams have been in contact with our Cape Canaveral and Kennedy Space Center partners and neighbors and have found no evidence of debris leaving the immediate area of LC-40.

At SpaceX headquarters in Hawthorne, CA, our manufacturing and production is continuing in a methodical manner, with teams continuing to build engines, tanks, and other systems as they are exonerated from the investigation. We will work to resume our manifest as quickly as responsible once the cause of the anomaly has been identified by the Accident Investigation Team. Pending the results of the investigation, we anticipate returning to flight as early as the November timeframe.

Other efforts, including the Commercial Crew Program with NASA, are continuing to progress. Getting back to flight safely and reliably is our top priority, and the data gathered from the present investigation will result in an even safer and more reliable vehicle for our customers and partners.

Gwynne Shotwell uddyber

Mars Architecture Presentation with Elon Musk d. 27. September kl. 20:30 – 21:30 dansk tid.
Hvad angår planerne om Mars, så skulle der kommer en video her:
http://www.spacex.com/Mars

Alternativt
https://www.youtube.com/user/iafastro/videos

Opdatering en 28. okt. 2016.

SpaceX oplyser at de nu har kunnet genskabe ulykken, men de dog stadig ikke har helt forstået fysikken bag problemet. Det er antageligt en kombination ag tryk og temp. hvor helium opfører sig en smule anderledes end de havde troet.. Så det tyder på at de vil komme retur i løbet af et par uger og er i luften inden jul.

Opdatering 4. nov.

Endnu engang bekræfter SpaceX at de har fundet årsagen. Uden dog at gå ned i en detaljeret rapport. Men mere og mere tyder også på at det er lidt dumt hvad de har foretaget sig. Altså de havde en raket der styrtede ned i sommeren 2015 og derefter gik der næsten et halvt år til de havde fundet og derefter rettet fejlen, og så ´havde de samtidig opgraderet raketten så den bruget såkaldt super-nedkølet ilt og spøjst nok er det i denne nye procedurer at fejlen er opstået… Altså en eller anden skylder en rigtig god forklaring på hvordan det kan gå til at man indføre en ny procedurer og alt ikke bliver testet under alle konditioner.

Reklamer

Om hubertnaur

Særlig interesse i fri og åben adgang til viden
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