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How much does the most expensive aircraft in history cost? The B-2 Spirit is the only stealth bomber that has been deployed by the united states military – and it has come at an incredible cost. Development of this aircraft began in 1979 when the u.s. Was building stealth technology during the Cold War. It’s well known for being a flying wing; there are no tails, no fuselage (body) of a typical aircraft. Additionally, the b-2 uses radar-absorbing materials which make a large bomber with a 172 fo