3 ms·
It is so rare to get in-depth FEA reports like what you’ve linked us here. Here’s what Boeing states in the report: “ There is still detail design work that wi
by angelgonzales 2y ago
It is so rare to get in-depth FEA reports like what you’ve linked us here. Here’s what Boeing states in the report:
“ There is still detail design work that will need to be completed. However, both the C4 and C11 configurations come close to an acceptable conceptual design. A small test program would be needed to address some of the outstanding questions. Additional modeling and optimization are also needed at the detail design level. The inclusion of portals, motor attachments, tanks and other peripherals would need to be included in a final analysis.
More work needs to be done to define thermal load and cure shrinkage for both the composite cylinder and for the bonded joint. This composite structure is much thicker than most of the structure currently being produced. Thermal strains may play a significant role in the design of the structure. The time required for fabrication and the extended time that the material will be at elevated temperature during cure and bonding needs to be examined. These topics were mostly avoided during the first part of the design cycle. This report describes a conceptual design and a preliminary feasibility study. The design is feasible, but will require additional work in the areas of manufacturing, cure kinetics, material allowable, assembly, and dimensional tolerance.”
In summary - even if Oceangate developed a robust design, they’d still need to manufacture the submarine. It appears they never built enough test articles to develop a baseline for robustness, because they never did destructive testing at depth with actual hardware they never knew their margins and were never able to validate their models to reality.
- burningChrome 2y ago>>> they never knew their margins and were never able to validate their models to reality The fact they knew this and went ahead anyways and took six people to their graves with them is absolutely terrifying.
- SoftTalker 2y ago"At some point, safety is just pure waste." -- Stockton Rush, OceanGate CEO. The guy sounds like the epitome of the sociopathic CEO. Smartest guy in the room, knows better than all the trained, experienced engineers who urged caution. Too bad his passengers listened to him.
- shiroiushi 2y ago>The guy sounds like the epitome of the sociopathic CEO. Smartest guy in the room, knows better than all the trained, experienced engineers who urged caution. Too bad his passengers listened to him. No, he doesn't sounds sociopathic at all. People who "know better" than all the specialists aren't showing a sociopathic personality trait at all. Arrogance and stupidity, perhaps, but those aren't equated with sociopathy. A sociopathic CEO would be someone who has no empathy. There's no evidence of that here, in fact probably the opposite. Stockton was just a fool. Seriously, people need to stop using the "sociopathic" label for everyone they don't like. Edit: to add to this, this reminds me of young people constantly using the word "gaslighting" when they really mean "lying". People who lie to you aren't engaging in an elaborate plan to make you question your own sanity; they're just liars. Please go watch the movie before ever using the term again.
- deleted 2y ago[deleted]
- xnorswap 2y agoToo late to save the word "gaslight", that one has well and truly been rewritten to mean "lying to me".
- gwd 2y agoNot too late by a long shot. Just keep insisting on the actual meaning; same for "terrorist", "facist", etc.
- SoftTalker 2y agoGood luck at parties....
- mindslight 2y agoYou can fight the good fight in social situations too, you just have to come at it sideways and make people laugh rather than engaging in head-on pedantry.
- TechDebtDevin 2y agoWell they did actually get to invalidate their model.