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.