Quote:
Originally Posted by Stephan Wilkinson
That has always been assumed. But the NASM rigorously analyzed the plywood covering of their artifact, with digital microscopes and spectrometers, and found there to be NO such material in the glue. The black flecks that were always regarded as carbon black mixed in with the glue to create a radar-absorbent material were simply very old, oxidized wood.
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I think clean design on Falco be more part of its stealth features than laminated impreganted wood per se. Old wood
and fibreglass gliders (that all do have metal parts, wires and tubes) show equally bad up on primary radar. Requiring them have Transponders, FLARM or ADS-B etc.
Coal = Old wood. Heated. Compressed.
Absense of RAM "
proven by NASM" on NASM Go 229 specimen. Has anyone checked RAM properties of Oxidised Wood and is there a reliable source for that test?
Wiki says so "The earliest forms of stealth coating were the materials called
Sumpf and
Schornsteinfeger, a coating used by the German navy during
World War II for the
snorkels (or
periscopes) of
submarines, to lower their reflectivity in the 20-cm radar band the Allies used. The material had a layered structure and was based on
graphite particles and other
semiconductive materials embedded in a
rubber matrix. The material's efficiency was partially reduced by the action of sea water.
[3][4] Germany also pioneered the first aircraft to use RAM during World War II, in the form of the
Horten Ho 229. It used a carbon-impregnated plywood that would have made it very stealthy to Britain's primitive radar of the time. It is unknown if the carbon was incorporated for stealth reasons or because of Germany's metal shortage.
[5]"
3. Hepcke, Gerhard. "The Radar War, 1930-1945" (PDF). Radar World.
4. "The History of Radar". BBC. 2003-07-14
5. Shepelev, Andrei and Ottens, Huib. Ho 229 The Spirit of Thuringia: The Horten All-wing jet Fighter. London: Classic Publications, 2007. ISBN 1-903223-66-0.
Having read quite a lot on many things, say either I am wron gor I am wrong.