2 ms·
My understanding is that it's not about airflow, but about unplanned for localized stresses rather than having them distributed evenly. This means the joint do
by mhandley 5y ago
My understanding is that it's not about airflow, but about unplanned for localized stresses rather than having them distributed evenly. This means the joint does not meet limit load requirements. While it's not so bad it could immediately structurally fail under expected loads, over time the stress concentration could weaken the structure at those points, leading to premature failure or more likely, significantly shorter service life than expected.
- WalterBright 5y agoThe FAA said it wasn't a safety issue. Not meeting limit load requirements is a safety issue. Though I wouldn't be surprised if the CNN reporter got it all bollixed up. I wouldn't take anything seriously from CNN.
- mhandley 5y agoIf it is the issues from last year, this article has a lot more detail: https://seekingalpha.com/article/4374235-boeing-dreamliner-manufacturing-nightmare https://seekingalpha.com/article/4374235-boeing-dreamliner-m... As I understood it, there are two issues, neither of which is a problem by itself, but if they occur simultaneously, it would not meet limit load requirements. But maybe CNN is reporting on another new issue - hard to tell.
- mhandley 5y agoIt looks like this isn't exactly the issues from last year, but is a new related issue. This Seattle Times article has slightly more detail: https://www.seattletimes.com/business/boeing-aerospace/a-new-787-dreamliner-manufacturing-flaw-will-prolong-boeing-delivery-halt/ https://www.seattletimes.com/business/boeing-aerospace/a-new... Last year's issue related to joints around the rear pressure bulkhead. This article indicates the new issue is a similar problem related to the forward pressure bulkhead.