Lockheed A-12 Oxcart

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Citat:Early picture of an A-12. This was before it was decided to paint the aircraft black. Black paint helped to release some of the heat generated by air friction. All of the airplanes in the blackbird family were made primarily of titanium.
The speeds around the Blackbird’s cruise range would absorb far too much heat for it to release, so the black paint would actually be superior in terms of heat dissipation to compensate for titanium's natural characteristics. Also later the black paint included some stealthy radar reflecting iron fragments called RAM.
Later, both the Oxcart and the Blackbird would be coated with an special black paint that reduced the temperature by 23C (75F) and had radar absorbing capabilities. [Link mogu videti samo ulogovani korisnici]