Ferrari Mailing List: Re: More UA 328 images

[Anthony Bauco (tbauco]

That 747 uses the PW4056-94 engine which, I believe does not use diffusion bonded hollow blades.  The UAL 777 uses the PW4077-112 which does use diffusion bonded hollow blades.  It is the same engine that failed in 2018 in another UAL 777.  There was also a failure on a JAL 777 in December which used the PW4084-112.  That engine also uses diffusion bonded blades.

Not looking good for Pratt.  

As for carbon fiber, I think it is only GE that uses it.  But RR may be making them by now too.  I was at GE R&D in 2000 when that was brand new.  Scared the crap out of me.  I was in the nondestructive testing department and I know how hard it is to test carbon fiber.  One of my first patents was on this topic.  We were working closely with Lockheed on testing F-35 parts, unrelated to the engines.  We also used our system to test some F1 parts for Ferrari.  I believe GE aircraft engines was using standard ultrasound for the CF fan blades.  To be honest, I don't love the idea of fusion bonded blades either.  Not sure which I distrust more but time will tell.

I also did two internships at United Technologies Research Center working on nondestructive testing.  At that point I would have said they were well ahead of GE on testing.  Both companies ruined their R&D centers so neither is what it used to be.  But maybe UT (now Raytheon) is now worse.  I do completely different work now so I don't follow NDE/NDT closely anymore.  Haven't for 20 years.  

On Mon, Feb 22, 2021, 2:28 PM Erik Nielsen <judge4re [at] gmail.com> wrote:

Same song, second verse. 

https://www.zerohedge.com/markets/boeing-747-suffers-engine-issues-drops-metal-parts-across-dutch-town

On Feb 22, 2021, at 12:22 PM, Clarence Romero Jr. <clyderomerof4 [at] gmail.com> wrote:

Yes it did 

Clyde Romero

If you have no enemies

You have no character ! 

Scars are tattoos with better stories!

When you're out of F-4's you're out of fighters!

On Feb 22, 2021, at 1:15 PM, Rick Moseley <ramosel [at] pacbell.net> wrote:



Still, I think the kevlar blanket around the primary fan did a amazing job!!

On Monday, February 22, 2021, 8:50:42 AM PST, Clarence Romero Jr. <clyderomerof4 [at] gmail.com> wrote:

Oh no

It was uncontained definitely 

     RF4-4EVR

Scars are Tattoos with better stories !

If you have no enemies, you have no character !

Clyde Romero    

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On Feb 22, 2021, at 11:49 AM, Rick Moseley <ramosel [at] pacbell.net> wrote:



I know RR also uses the hollow or inflated titanium primary fan blades.  Is it only GE that uses carbon fiber?

While there have been some arguments about whether this was contained or uncontained, I think these pics seem to show a nice hole near the turbine are and the fuselage damage is a smoking gun for something coming out radially... 

On Monday, February 22, 2021, 6:25:34 AM PST, Clarence Romero Jr. <clyderomerof4 [at] gmail.com> wrote:

Looks like blade failure 

They PW use hollow blades 

     RF4-4EVR

Scars are Tattoos with better stories !

If you have no enemies, you have no character !

Clyde Romero    

Confidentiality Notice:  This e-mail ( including attachments ) is covered by the Electronic Communications Privacy Act, 18 U. S. C., Sections 2510-2521, and is intended only for the persons or entity to which it is addressed, and may contain confidential or privileged material.  Any unauthorized review, use, disclosure, dissemination, copying, forwarding or distribution is prohibited.

This email transmission, and any documents, files or previous email messages attached to it, may contain confidential information that is priviledged.  If you are not the intended recipient, or a person responsible for delivering it to the intended recipient, you are hereby notified that any disclosure, copying, distribution or use of the information containes in or attached to this message is STRICTLY PROHIBITED.  If you have received this transmission in error, please immediately notify us by reply e-mail at Clyderomerof4 [at] gmail.com or  by telephone at (678 6419932)and destroy the original transmission and its attachments without reading them or saving them to disk.

On Feb 22, 2021, at 9:18 AM, Hunter Schultz <hunter.schultz [at] gmail.com> wrote:



Fan blade failure? From a bird strike? 

On Mon, Feb 22, 2021 at 9:08 AM Clarence Romero Jr. <clyderomerof4 [at] gmail.com> wrote:

> 
> Perhaps you’ve seen these.
>
>
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