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#152
07-03-2010, 11:44 PM
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Quote:
Oh yeah and did I mention, I read the book by Ben Rich -Skunk works like 5 times, very-very inspirational. And here we have another great designer building the 'Greatest Airplane' ever. I hope to get my Paypal account sorted by the time this baby is done. max 
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#153
07-04-2010, 09:20 AM
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After reading Yogi's mention of a dark blue
original color It reminded me of the insignia blue color I was going to use on the B-17 I'm doing. I was going to use the military Insignia blue which has an RGB of 38-48-66 It seemed almost black to me when printed out so I went with true blue which is 24-100-147 I know the color has already been determined and I agree with the choice of #2 gray. Ron
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#154
07-04-2010, 10:26 AM
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Back when the Minnesota Air Guard Museum had an A-12, I was out there looking at it (if you were there when nobody else was around, they let you climb up and look into the cockpit) and I was asking one of the curators about the paint. He said the original A-12s and SR-71s were painted in a radar-absorbing paint called "Iron Ball" (because it had small spheres of iron in it) and he told me how much it cost a gallon but I forget. I remember it was astronomical, and he said it was expensive enough that the museum couldn't afford to repaint the A-12.
I think the color is one of those "scale color" issues. Up close, it definitely was black. Airborne, under bright sunlight, there was a bluish tint. One odd aside about the SR-71: Its original designation was RS-71, following standard USAF naming policy. But when LBJ showed some recon photos taken by a Blackbird in a nationally televised speech, he referred to the aircraft as an "SR-71." The Air Force figured that if that's what the president was going to call it, then that's what they'd call it, so they changed the designation.
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#156
07-04-2010, 03:57 PM
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On the cost of paint thing, I talked to one of our restoration guys on Friday, and he used to fix Blackbirds back in the day. He said the paint was something like $10,000 per gallon. Somewhere around that anyway.
I couldn't get any info about the color coeds for the paint. The guy that knew that was laid off a month ago, and he was the only one at the museum that really knew what it was.
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#157
07-06-2010, 10:34 AM
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Ken send me updated versions, I just printed them ,and they look great, just the charcoal dark grey ( with a touch of blue) I suppose it should be..
Better than the first I printed, so I'll start over and save the nacelle I 've build for coating experiments Isn't it great how this forum works with everybody stepping in and helping out? But I stongly advice that everybody taking on this model starts with a printing test, because it will turn out differently from every software - program or printer
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#159
07-06-2010, 12:47 PM
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Paint Color used for the blackbird, paraphrased from Skunk Works by Ben Rich.
When trying to choose what material was to be used for the SR71, a "softer" version of titanium that began to loose its strength around 550deg F. Why it was able to be made from this softer titanium, was because of Rich's idea to use black paint. Black paint would lower the skin tempetures by 35deg F allowing a different kind of titanium to be used. Black paint radiates heat faster than can be absorbed by friction. Another page paraphrased, chief chemist developed special antiradar coatings using iron ferrites and asbestos to handle high heat. Hope this helps with the color choice. Mike
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#160
07-09-2010, 03:51 PM
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Ken is working on correction of the design, but this is a sneak preview of the test build Ken is doing
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