Silicon Investor (SI) -- The First Internet Community

STOCKTALK

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor. We ask that you disable ad blocking while on Silicon Investor in the best interests of our community. If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.

Strategies & Market Trends : 2026 TeoTwawKi ... 2032 Darkest Interregnum -- Ignore unavailable to you. Want to Upgrade?

To: TobagoJack who wrote (169197)	3/5/2021 10:39:06 PM
From: sense	Read Replies (1) \| Respond to of 217734

I did see a follow up from a fellow aviator on the prior "engine issue" that dropped the front cowling in someone's front yard after the engine failed. It was a Pratt & Whitney engine... that lost a fan blade. That's not supposed to happen. But, the rest of it was a mostly good news issue... They redesigned engines some years back, with a requirement that they be able to lose a fan blade without the shelling out of the engine resulting in pieces and parts flying everywhere at high speed. In the past, engine failures like that one would kill people in the passenger compartment from parts flying off the high speed rotating core like throwing knives. Now, they have to be contained inside the engine when a failure occurs. That mostly occurred... the kevlar blanket surrounding the engine didn't let the pieces and parts become projectiles piercing the cabin... The one exception was the fan blade that broke off... which bounced off its neighbor and went flying out the front of the engine... slicing through the cowling... which, once cut... had nothing preventing the air flow from peeling it away from the engine... since it was no longer a closed ring, but just an coiled aluminum strip once it was cut all the way through. The nature of the failure makes it more likely it was an engine manufacturing defect... but, properly done maintenance inspections might well have caught it long before failure... so could be airline liability too. That engine could have had a history of ingesting some foreign object... a bird... a rock sucked up off the runway... or an improperly done repair. But if any of those... probably would have heard about it already. Boeing likely not going to be on the hotseat for that one... looking again: Denver plane engine fire consistent with metal fatigue in fan blade, say investigators Pratt & Whitney Engines Scrutinized After Boeing Jet Mishaps - The New York Times