REFLECTOR: Aluminum Fittings

[nmflyer1 at aol.com]

The cool looking windows also blew out on the Comet. That is when they changed to the rounded corner windows, because of the stressors in the corners. 


Good History Larry :) 


Kurt 




-----Original Message-----
From: Laurence Coen <lwcoen at hotmail.com>
To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
Sent: Fri, Apr 19, 2013 9:49 pm
Subject: Re: REFLECTOR: Aluminum Fittings


I think that the Comet was one of the first commercial airliners flown by 
BOAC and they had a bad habit of shedding there tails due to aluminum metal 
fatigue.  There was a movie about it staring Jimmy Stewart.

Larry Coen
N136LC (non aluminum)

--------------------------------------------------
From: "Scott Derrick" <scott at tnstaafl.net>
Sent: Friday, April 19, 2013 6:15 PM
To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
Subject: Re: REFLECTOR: Aluminum Fittings

> Yeah, I guess that's why they don't use aluminum to make airplanes. :-)
>
> Laurence Coen <lwcoen at hotmail.com> wrote:
>
>>
>>Aluminum  will experience fatigue If it flexes even a tiny amount where as
>>steel has to be flexed to the point of deformation  before it starts to
>>fatigue.  Aluminum won't fail right away but it has a definite life span 
>>and
>>if left in service long enough it WILL fail.
>>
>>Larry Coen
>>N136LC
>>
>>From: "Brian Michalk" <michalk at awpi.com>
>>Sent: Thursday, April 18, 2013 9:15 PM
>>To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
>>Subject: REFLECTOR: Aluminum Fittings
>>
>>> I have two aluminum fittings on the turbo that I had to order steel
>>> replacements for.  I haven't swapped them out yet, but will do that this
>>> weekend.
>>>
>>> I'm trying to find the information on why we do this.  I've been told to
>>> not use AL fittings on the engine, but I don't know why, and can't find
>>> the reference.
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