The U.S. Air Force’s B-2 Spirit, its most formidable stealth bomber, suffers from a “stealth bomber problem”: scarcity.

There’s something almost otherworldly about the B-2 Spirit Stealth Bomber. With its sharp bat-wing design and smooth, radar-evading skin, it looks like it flew straight out of a science fiction film.

The B2 Spirit looks nothing like a conventional aircraft. Rather than wings attached to a fuselage, the B2 is a single flying wing. While most people associate it with stealth, the flying wing design ...