Hitler's Stealth Fighter

Back when stealth was very, very secret, a few people quietly advised me to take a look at the Horten Ho229, one of WW2 Germany's most advanced designs - a jet-powered flying wing made of wood. In a German book, a British documentary producer had found something even more interesting: the Horten brothers, Walter and Reimar, had planned to use a primitive radar absorbent structure (RAS) in the leading edges. They were to be made from a sandwich of plywood around a carbon-loaded filler. The only question: how well would it actually have worked?

Now, we know:

HERE