REFLECTOR: Las egas accident

[Brian Michalk]

Not much more information that the original NTSB report.

What does it mean to engage the supercharger?

A supercharger is a positive displacement compressor.
Now, technically speaking a turbine (centrifugal) compressor powered via
belt or other non-exhaust type source is considered a supercharger.
However, most people understand that a "supercharger" is a positive
displacement device.

This means that if the power source is removed from a supercharger
(broken belt, etc.), then it will be a restriction to airflow.

So, for the first flights, was the supercharger bypassed?  It's amazing
to me that the first five hours were uneventful, then this had to
happen.  It's a tragic loss.

A turbocharger, or centrifugal compressor would not present such a
restriction.  I have done quite a bit of ground testing with the turbo
installed as part of the induction path.  The engine runs quite well
with a seized or non-powered turbo.

David Ullman wrote:
> An article that just appeared on the eb concerning the engine in the fatal
> accident
> 
> http://www.aero-news.net/index.cfm?ContentBlockID=efbfd58b-4a6f-4095-b7ff-fc
> 783fa77709
> 
> 
> David G. Ullman PhD ME
> Robust Decisions
> ullman at robustdecisions.com
> 541-754-3609
> 
> 
>  
> 
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