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aldaniels(at)fmtc.com
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 Posted: Wed Mar 22, 2006 1:49 pm Post subject: Steve Wittman crash |
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I believe there was more to his crash than type of paint, but I don't
remember the details. I will look for the report on it.
kerrjohna(at)comcast.net wrote:
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Steve Wittman perished when his automotive paint and aeromotive fabric chose to fly in "loose formation" with the rest of the aircraft.
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7suds(at)Chartermi.net
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| Posted: Wed Mar 22, 2006 3:26 pm Post subject: Steve Wittman crash |
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Alan & Linda,
I am not positive but I seem to remember the failure of Steve's fabric was
due to him using dacron fabric with a dope method of gluing such that would
be used on Irish linen, or some thing like that. If I remember correctly the
finish was about 10 years old when it failed.
Lloyd
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Ceashman(at)aol.com
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| Posted: Wed Mar 22, 2006 6:20 pm Post subject: Steve Wittman crash |
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Maybe I am wrong but I was under the impression that there was no silver UV
protector (Polyspray) under the top coat and the fabric deteriorated because of
UV degradation.
Eric Ashman, Atlanta
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aldaniels(at)fmtc.com
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| Posted: Wed Mar 22, 2006 6:22 pm Post subject: Steve Wittman crash |
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This is the response I got from the EAA.
Alan,
It's our understanding that the fabric on the top of the wing directly ahead of the aileron detached and ballooned up. This upset the airflow over the aileron, causing a violent flutter leading to in-flight breakup of the aircraft. It was determined that Steve had mixed two different fabric covering processes when covering the airplane, which led to a breakdown of adhesion of the fabric to the wing, which resulted in the separation and ballooning.
Hope this helps!
Joe Norris
EAA Aviation Services
EAA Aviation Center, Oshkosh, WI
888-322-4636, extension 6806
jnorris(at)eaa.org
Alan & Linda Daniels wrote:
| Quote: |
I believe there was more to his crash than type of paint, but I don't
remember the details. I will look for the report on it.
kerrjohna(at)comcast.net wrote:
>
>
>Steve Wittman perished when his automotive paint and aeromotive fabric chose to fly in "loose formation" with the rest of the aircraft.
>
>
>
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wliles(at)bayou.com
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| Posted: Wed Mar 22, 2006 6:40 pm Post subject: Steve Wittman crash |
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Mr Whitman attached the fabric to the plywood skin of the wing by
painting through the fabric with dope. This works on cotton or linen
where the fibers absorb part of the dope and the adhesion is very good.
With dacron the fibers have to be encapsulated as they will not absorb
the glue and just painting through the fabric will not do a proper
job. Dacron needs to be placed in a bed of glue. The glue can be dry
and reactivated with acetone or MEK and the fabric worked into the bed
and then painted over or it can be laid into a bed of wet glue. The
fabric on the O&O Special came loose on top of the wing and resulted in
a crash. I believe he was a young 91 at the time. May have been the
best way for him to go.
Jerry Liles
Alan & Linda Daniels wrote:
| Quote: |
I believe there was more to his crash than type of paint, but I don't
remember the details. I will look for the report on it.
kerrjohna(at)comcast.net wrote:
>
>
>Steve Wittman perished when his automotive paint and aeromotive fabric chose to fly in "loose formation" with the rest of the aircraft.
>
>
>
|
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aldaniels(at)fmtc.com
Guest
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| Posted: Wed Mar 22, 2006 9:48 pm Post subject: Steve Wittman crash |
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I have ask for more details and will pass them along as soon as I get
them .
Alan & Linda Daniels wrote:
| Quote: |
This is the response I got from the EAA.
Alan,
It's our understanding that the fabric on the top of the wing directly ahead of the aileron detached and ballooned up. This upset the airflow over the aileron, causing a violent flutter leading to in-flight breakup of the aircraft. It was determined that Steve had mixed two different fabric covering processes when covering the airplane, which led to a breakdown of adhesion of the fabric to the wing, which resulted in the separation and ballooning.
Hope this helps!
Joe Norris
EAA Aviation Services
EAA Aviation Center, Oshkosh, WI
888-322-4636, extension 6806
jnorris(at)eaa.org
Alan & Linda Daniels wrote:
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>I believe there was more to his crash than type of paint, but I don't
>remember the details. I will look for the report on it.
>
>kerrjohna(at)comcast.net wrote:
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>>Steve Wittman perished when his automotive paint and aeromotive fabric chose to fly in "loose formation" with the rest of the aircraft.
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