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From: mikel@bmcg.UUCP (Mike Lesher)
Newsgroups: net.columbia
Subject: Re: Re: Columbia's Tiled Damaged by Rain
Message-ID: <1817@bmcg.UUCP>
Date: Mon, 26-Aug-85 11:33:52 EDT
Article-I.D.: bmcg.1817
Posted: Mon Aug 26 11:33:52 1985
Date-Received: Sat, 31-Aug-85 04:45:00 EDT
References: <199@mot.UUCP> <900002@pbear.UUCP>
Reply-To: mikel@bmcg.UUCP (Mike Lesher)
Organization: Burroughs Corp. ASG, San Diego, CA.
Lines: 23

In article <900002@pbear.UUCP> peterb@pbear.UUCP writes:
>...
>	I remember reading a while back about a writer's ride in the
>blackbird, and as he was leaving he asked the pilot what the burning smell
>was. The pilot pointed out that since the titanium heeted up, they had to use
>insulation on the inside of the aircraft to preserve avionics, hydralics,
>and wiring and control cables from the extreme heat. That is also why
>blackbirds are painted black: so the black surface radiates heat faster than
>any other color.
>...
>Peter Barada
>{ihnp4!inmet|{harvard|cca}!ima}!pbear!peterb

I saw a TV program that detailed the making of the SR-71 (blackbird).  It was
first painted standard white with normal jet paint.  After its first high speed
flight it returned black.  They then went and tried to develop a high temp
paint that would not burn off.  I seem to remember that they spend bunches of
money, at our expense, with no sucessful attempts.  They then said, "Gee, it
looks need black." After all, the avg. hull temp. is 1300 degrees F.

Mike Lesher (bmcg!mikel),
Burroughs Distributed System Group,
San Diego, CA.