Men Vanity Fairs artikel är väl Lochridges vittnesmål om den första defekta kolfiberrullen som där kolfibern hade delaminerats och därför som han fick sparken ?
Mycket bra artikel annars.
Det finns dock minst ett fel i artikeln, att det finns inget vedertaget certifieringsschema, metod och protokoll för hur sådana här farkoster ska testas.
Inte heller om hur många defekter man kan tillåta ?
Okej, såg ju det här stycket:
Citat:
One person involved in the recovery effort, who wishes to remain anonymous, told me that the wreckage itself was proof that no one aboard the sub had suffered: “From what I saw of all the remaining bits and pieces, it was so violent and so fast.”
The abyss doesn’t care if you went to Princeton or that your ancestors signed the Declaration of Independence. If you want to go down into her world, she sets the rules.
“What did the carbon fiber look like?” I asked.
“There was no piece I saw anywhere that had its original five-inch thickness,” he said. “Just shards and bits…. It was truly catastrophic. It was shredded.”
Wikipediaartikeln om Titans förlisning har
uppdaterats:
https://en.wikipedia.org/wiki/Titan_submersible_implosion
Citat:
On 30 June, Insider published an analysis of the recovery photos by Plymouth University professor Jasper Graham-Jones. He concluded that a failure of the carbon-fibre hull was the most likely cause of the loss, given that no large pieces of carbon fibre are known to have been recovered. Another possible cause was the acrylic viewing window. He noted that the window was absent from its bell housing when it was recovered. While the salvage team may have removed the window before salvaging its bell housing, they more likely would have left it in place. However, Graham-Jones said that if the window had failed before the hull rather than after, he would have expected larger pieces of carbon fibre to be recovered.
Alltså att inga större kolfiberbitar skulle ha hittats.
Flera bedömare gissar å andra sidan att det är limmet som släppte mellan titan-metallen och kolfiberrullen.
Men man hittar den här intressanta sammanfattningen, om man letar ett tag:
https://www.thestandard.com.hk/column-news/1816/Titan-was-cursed-from-the-get-go
Citat:
Titan was cursed from the get-go
Nuts and Bolts | Edmund Leung | 12 Jul 2023 11:29 am
The Titan, a deep-sea exploration vessel used at the north Atlantic site of the sunken Titanic, suffered a tragic implosion, killing all five occupants.
The incident shocked the world, not just over the tragic nature of the deaths but also because the sub failed so early in its mission.
A full investigation will take time, but there are many telltale signs that showed the incident could have been avoided.
The Titan was a carbon fiber cylinder with two end domes.
The 6.7-meter-long carbon fiber shell was supposed to be robustly constructed, with a thickness of about 13 millimeters. It weighed some 10,000 kilograms.
Ovanstående textstycke har alltså fel om tjockleken på kolfibercylinderns väggar, den var 127 mm, 5 tum och inte futtiga 13 mm.
Vidare att mindre tillplattade kolfiberbitar skulle ha hittats, men vi vet inte hur stora dessa skulle vara:
Citat:
When Titan lost communication after less than two hours, a frantic search was organized, taking in the best deep-sea vessels in north America and Europe.
These unmanned remote control vessels are capable of reaching that depth and have mechanical arms to retrieve debris.
After about three days, they found flattened pieces of the carbon fiber cylinder, supporting the implosion theory, and retrieved the two titanium end domes.
These were still intact but as the slings of the front cone was seen passing through the cavity where the acrylic window would have been, it confirmed that the window had been dislodged.
Artikeln är skriven av
Edmund Leung Kwong-ho en ingenjörsveteran, men tveksamt om han haft så mycket insyn i vilka delar som bärgats ?
Kanske att han misstagit de stora panelerna för kolfiberrullen ?
Vad tror ni ?
Annars är det en bra sammanfattning faktiskt.
Här är en annan artikel som förklarar hur fort en sådan här implosion inträffar:
https://www.eit.edu.au/titan-submersible-what-we-know-about-its-design-materials-and-its-implosion/
Artikeln är detaljrik och läsvärd tycker jag.
Övre gränsen för hur hög implosionshastigheten kan bli ligger på ljudets hastighet i vatten på 1500 meter per sekund, vilket ger omkring 2-3 millisekunder. Alltså för hela förloppet, då kapseln krossas.
Hotizon Arctic såg ut att ge sig av till Titans/Titanics gravplats den 16 augusti från St Johns Hamn, och såg ut gå på rak kurs mot denna.
Så de ska kanske göra en ytterligare sökinsats då på söndag förmiddag ?
Polar Prince förefaller att ha sökt sig till en annan hamn just nu.
