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From: "Al Wick" <alwick@juno.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-2957753@logan.com>
In-Reply-To: <list-2957753@logan.com>
Subject: Re: [FlyRotary] Re: Mistral Crash Analysis
Date: Sat, 7 Jun 2008 13:56:31 -0700
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C'mon guys. You do this every time there's a crash. Instantly go into 
rationalization mode. It's unhealthy. Greatly increases risk builders won't 
take action. Increases risk you won't research it thoroughly.

A healthy response would be:" Here's another example of how our engines 
produce unusually destructive exhaust temperature and pulses. We have a rich 
history of broken exhaust components. We need to be very thorough when 
designing and building exhaust."

I designed my own muffler. It had two inlets, two outlets. So if (when) my 
muffler failed, it could never block both pipes. I also put loose safety 
wire around my pipes, because on a pusher loosing pipe wipes out prop. So 
basically, I assume stuff will  fail, then design it to control the way it 
fails. I've heard of rotary guys doing same type of thing. This is a good 
time to share those key items.

On your car, they deliberately design products to fail a certain way. They 
will make a component weak, so it fails first. They do that with wheels and 
hubs. So when the muffler fails, little pieces come apart, not big sections?

You guys do a great job of sharing successes, design and construction 
details. This is another opportunity.

-al wick


<No doubt you are on the money, Rusty.  When folks are already predisposed 
to bad mouth the rotary - this will only be more ammunition.  "See! even 
with umpteen million dollars you can't get one to fly"  {:>).  But, I 
serious doubt it will effect many who have researched the rotary and come to 
understand its benefits - as for the rest, who cares {:>)
>

  I'm certain it was a relief to Mistral that the culprit was not one of 
their engine components.


  Whew! a close one for sure.


  Hi Ed,


  Unfortunately, I bet the majority of people will only hear "Mistral 
rotary", "lost power", and "crash"  :-(


  Rusty (RV-3 taking forever.)

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