Yesterday's Stealth

I believe wondawong is correct, and the story factually includes industrial espionage/sabotage activities with depraved indifference to possible loss of life. But business is never treason. Imagine a stealthy B-49B in service in 1951, how many losses to MiGs, etc.

It looks like a Gotha/Horten , did the allies took the german science results and built an akin plane ?

Not so much in this case. Northrop built flying wing designs as far back as the N-1M, which first flew in 1940. This would preclude the use of captured German data obtained post-war. However, some accounts state that Jack Northrop was "inspired" by pre-war Horten gliders.

But, it should be pointed out that Northrop was designing "flying wing" designs while the Hortens still had fuselages. The N1m was the first to be submitted to the US Military, but not the first to fly...

Wow. Bet that was a pain in the ass to control without all the modern day computers.

From Major Robert L. Cardenas, the Air Force chief test pilot on the project: "extremely unstable and very difficult to fly on a bombing mission...because of the continual yawing and the pitching which was evident upon application of the rudders, undoubtedly due to the control arrangements or elevons peculiar to the YB-49." The structural failure of the second aircraft couldn't have helped anyone's confidence, either.

Ouch!

Incorrect. Robt. Cardenas has been changing his story, and doing it on camera, for the past 30 years. From an inside source, Cardenas, Russ Shlee and AAF guys assigned to YB49 testing were determined to kill the project that killed their buddy, Glen Edwards in the crash that gave Edwards AFB its name. The "Dutch-roll" issue was mostly fixed by the "little Herbert" system from Honeywell. Edwards exceeded the airframe specs. in stall/spin tests.