Cavitation is often overlooked as a source of heat and pressure, but in reality its so powerful you can (and do) get nuclear fusion as a result. (No, I'm not kidding!). https://en.wikipedia.org/wiki/Bubble_fusion
Quote from: CJ on 09/23/2016 08:42 pmCavitation is often overlooked as a source of heat and pressure, but in reality its so powerful you can (and do) get nuclear fusion as a result. (No, I'm not kidding!). https://en.wikipedia.org/wiki/Bubble_fusionThe experiments that claimed to have evidence of Bubble fusion were unable to be repeated by independent groups that tried, and investigation found evidence of misconduct by the experimenter. Today, Bubble fusion is regarded as real only by fringe groups. Virtually all mainstream scientists agree it's pseudoscience.I understand you weren't claiming fusion actually happened on Falcon 9, but you were still basing an argument on the idea that it works.
Quote from: ChrisWilson68 on 09/26/2016 09:34 amQuote from: CJ on 09/23/2016 08:42 pmCavitation is often overlooked as a source of heat and pressure, but in reality its so powerful you can (and do) get nuclear fusion as a result. (No, I'm not kidding!). https://en.wikipedia.org/wiki/Bubble_fusionThe experiments that claimed to have evidence of Bubble fusion were unable to be repeated by independent groups that tried, and investigation found evidence of misconduct by the experimenter. Today, Bubble fusion is regarded as real only by fringe groups. Virtually all mainstream scientists agree it's pseudoscience.I understand you weren't claiming fusion actually happened on Falcon 9, but you were still basing an argument on the idea that it works.I stand corrected, and I'll put a note to that effect in my original post. Thank you. I was going from memory (never a good idea) that it had been confirmed (I have seen it reported as such in scientific reports in the past, though things do change), and didn't read all of what I linked to support the notion (bad idea). All I'm claiming for cavitation, though, is that it's enough to reach the ignition temperature of carbon fiber/resin in LOX.I'll link an article about sonoluminesance,https://en.wikipedia.org/wiki/SonoluminescenceI do concede that this this is a "wild and wacky" hypothesis, because it's in part based on a rumor of harmonics being detected, plus it would be low probability even if so, hence why I put it in this thread, because I thought that's what it was for (to avoid cluttering the main thread) - though others seem to have decided, per their actions in this thread, that it's a second party thread.
It was Boris the Animal.
Quote from: JAFO on 09/26/2016 05:21 amIt was Boris the Animal.It's... just... Boris. >:(
Quote from: hrissan on 09/28/2016 11:47 pmQuote from: yokem55 on 09/28/2016 10:43 pmWhat would contamination of the HE supply do? Say water contamination on the order of less than .01%? Could ice buildup in one of the helium lines and cause a problem? Is such contamination possible?I know the following is just very stupid idea - but if the contractor supplies several He bottles and by mistake one bottle is filled with hydrogen instead of He? Would result in several percent hydrogen contamination in helium. Due to different joule-Thompson coefficient during COPV filling the gas heats up unusually, until some fitting fails. The hot gas containing hydrogen is violently mixed into LOX...The theory is easily disproved by checking helium purity in the pad tanks. Hope they survived?... or a cause for embrittlement cracks that could accelerate routine metal fatigue.
Quote from: yokem55 on 09/28/2016 10:43 pmWhat would contamination of the HE supply do? Say water contamination on the order of less than .01%? Could ice buildup in one of the helium lines and cause a problem? Is such contamination possible?I know the following is just very stupid idea - but if the contractor supplies several He bottles and by mistake one bottle is filled with hydrogen instead of He? Would result in several percent hydrogen contamination in helium. Due to different joule-Thompson coefficient during COPV filling the gas heats up unusually, until some fitting fails. The hot gas containing hydrogen is violently mixed into LOX...The theory is easily disproved by checking helium purity in the pad tanks. Hope they survived?
What would contamination of the HE supply do? Say water contamination on the order of less than .01%? Could ice buildup in one of the helium lines and cause a problem? Is such contamination possible?
That argument might or might not be true for any given theory, but you should understand the argument being made when responding to it. Your response indicates you didn't understand the argument.
As of today (09/30/16) Elon Musk is using the word "improbable".
"Implication of sabotage adds intrigue to SpaceX investigation"https://www.washingtonpost.com/amphtml/business/economy/implication-of-sabotage-adds-intrigue-to-spacex-investigation/2016/09/30/5bb60514-874c-11e6-a3ef-f35afb41797f_story.htmlSo SpaceX at least has put real thought into this
Quote from: CapitalistOppressor on 09/30/2016 11:42 pm"Implication of sabotage adds intrigue to SpaceX investigation"https://www.washingtonpost.com/amphtml/business/economy/implication-of-sabotage-adds-intrigue-to-spacex-investigation/2016/09/30/5bb60514-874c-11e6-a3ef-f35afb41797f_story.htmlSo SpaceX at least has put real thought into thisThanks for posting this, I sure would like to see those video stills...http://www.spacelaunchreport.com/t4cape.html
Quote from: Rocket Science on 10/01/2016 12:12 amQuote from: CapitalistOppressor on 09/30/2016 11:42 pm"Implication of sabotage adds intrigue to SpaceX investigation"https://www.washingtonpost.com/amphtml/business/economy/implication-of-sabotage-adds-intrigue-to-spacex-investigation/2016/09/30/5bb60514-874c-11e6-a3ef-f35afb41797f_story.htmlSo SpaceX at least has put real thought into thisThanks for posting this, I sure would like to see those video stills...http://www.spacelaunchreport.com/t4cape.htmlI wonder what information would going up the roof provide?
That's much more plausible than some grassy knoll conspiracy.
My guess is some of their video showed debris shooting off that way and they wanted to check for debris and the story got twisted around.
Quote from: OnWithTheShow on 10/01/2016 03:32 pmMy guess is some of their video showed debris shooting off that way and they wanted to check for debris and the story got twisted around.Don't say "shooting"... .