Interesting idea, a radar invisible helicopter, and a natural pursuit. I would love to know how they intend to make the rotor blades 'invisible' to radar. They could modify shapes and use low reflectivity composites and coatings, but the damn things still move at great speed, and I have seen even relatively primitive (late 60's technology) CW tracking radars lock onto hubcaps of moving automobiles, albeit at close range.



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