ATTN: Bruce LeMaster RE: SL Epoxy and supersonic air flow

From: Monica & Glenn Whiteside (SiderWhite@worldnet.att.net)
Date: Fri Dec 11 1998 - 10:00:11 EET


Bruce:

There is a ceramic coating that I have been wanting to try for these
applications - it's a very durable, wear resistant and flexible coating that
we have used on some of our stretch-form tooling for wear-resistance
coatings. But you will need to seriously beef up the SLA model internally
so it will not deform and break apart under the supersonic air pressures
(fuselage sections might be okay but structures such as wings and
vertical/horizontal fins might not survive very easily). The coating is
called "CeRam-Kote 54" and it is a spray applied air-cured ceramic epoxy
coating. The coating is currently approved for use on all F-15 aircraft
leading edges and is currently under testing on B-1 aircraft. It's
expensive but it might be worth a try. You can get more information at
their web site at: www.ceram-kote.com/aviation.htm
Let me know if you try it and what the results were if possible.
Some of our NASA friends here on the rp-ml might also be of help.

Best Regards,

Glenn Whiteside
Cessna Aircraft Company
e-mail: siderwhite@worldnet.att.net

-----Original Message-----
From: Bruce E. LeMaster <LeMaster@artcorp.com>
To: rp_ml Posting <rp-ml@bart.lpt.fi>
Date: Thursday, December 10, 1998 4:35 PM
Subject: SL Epoxy and supersonic air flow

>Hello all,
>
>We have a customer that would like to have a SL
>model made and then coated with an
>as-yet-to-be-determined material and actually test
>the model in supersonic flight. We have in the
>past plated SL parts with nickel and chrome for
>use in wind tunnels (for the same customer) but I
>have no idea what goes on at supersonic flows.
>
>Do any of you have experience with SL parts at
>supersonic airflow conditions? Any thoughts on
>plating the SL part with some combination of
>metals that might strengthen it to withstand the
>test environment?
>
>Thanks in advance.
>
>Bruce E. LeMaster
>--
>Applied Rapid Technologies Corporation
>265 Cambridge Street, Suite 100
>Fredericksburg, Virginia 22405
>(540) 371-1100 / (540) 371-4100 fax
>Web Page URL: http://www.artcorp.com
>
>
>
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