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Originally posted by Catalytic
I'm sure Nortrop are not insane...although some people thought Jack Northrop was back in the day of his first flying wings and midget parasite jet fighters
LET THE MADNESS BEGIN
The leading edge of the wing is a remarkably complex shape, a blend of sharp and blunt edges with changes in camber from root to tip. It evolved as a compramise between aerodynamics and stealth. For a stealth aircraft, the ideal is an infinitely sharp edge, but this would cause flow breakup and excessive drag; the aerodyanamicists wanted a smoothly curved edge. The basic comprmize was based on the fact that most electromagnetic scattering occures at the ends of each straight leading edge. The resulting shape, from the B-2's nose to wingtips, is like a toothpick: fatter and rounder in the middle and tapering off to a point at each end. Toward the nose, to minimize problems of flow seperation, the sharp edge is bent downwards to align it with the free airstream at the B-2's normal cruising angle of attack, giving the bomber its characteristic hawk's-beak profile.
Using a device made up of ten fiberglass rings, scientists at Duke University made a copper cylinder disappear—at least from microwaves. Rather than bouncing off the cylinder, the device made electromagnetic waves bend around it, like a rock in a stream. In theory, the same could hold true for light waves. In theory.
Originally posted by carcharodon
I found a mention of a how scientists made a copper cylinder disappear to microwaves, could this be a principle of the B2 active stealth?