The design of the Falcon is loosely based on alleged designs of the Aurora, an alleged top-secret hypersonic spyplane developed by the U.S. Air Force in the late 1980s and early 1990s.
The design of the Falcon is very close to that of the U.S. Air Force experimental XB-70 Valkyrie supersonic bomber. The actual project was abandoned after the loss of one of the prototypes in an accident.