Boeing 2707 Supersonic Transport Design Family

The Boeing 2707 was the United States major 1960s supersonic-airliner design effort. Boeing evolving swing-wing and delta-wing concepts promised Mach 2.7 intercontinental service and attracted substantial airline interest, but economic, environmental, technical, and political pressures ended federal funding in 1971 before a flight article was completed. The family belongs in the library as a historically consequential design, not as a fictitious aircraft or prototype.