Re: [CAD_CAM_EDM_DRO] Modeling a twisted blade on autocad?? PLease help!

I think designing a centrifugal compressor is a bit more easier since the
dynamics involved are a little less complex. BUT, I will have to say that
CNC machining would require a rather expensive 5 axis machine.

----- Original Message -----
From: "Keith Rumley" <DSCadCam@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Thursday, July 25, 2002 12:37 PM
Subject: Re: [CAD_CAM_EDM_DRO] Modeling a twisted blade on autocad?? PLease
help!


> OT...
>
> > The two things that are certain about the Comet are two: 1) they didn't
> > crash because of engine trouble (metal fatigue did it, specifically the
> > window frames),
>
> Yes, that's true. Note I did say that the engine was the least of the
> problems, refering to the metal fatigue/pressurization problem. The engine
> wasn't the main issue. (and, probably never was an issue, read below.)
>
> >and 2) nobody in the 50s ever used carbon fiber composites
> > in the motors. It was at least another 10-15 years before it was even
> > invented.
>
> Right. I got to thinking along similar lines after I'd posted. So, went
> looking for the reference. Couldn't find it.
> Did find that the engine (DeHavilland Ghost) had a centrifugal compressor,
> which was of metal. Not many other places in a gas turbine cycle that
carbon
> fiber would work, even if it should have existed at the time.
>
> - Keith
>
> Hmmm... to help bring this post a little bit on topic, a centrifugal gas
> turbine compressor is quite different to model in CAD and MACHINE with CNC
> than the prop style blade that was the topic of the original post.
>
>
>
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