Boeing 2707 prototype supersonic airliner designed to fly at Mach 3. Further development was halted after the U.S. government cut funding in 1971.
https://s3-us-west-1.amazonaws.com/h...7_fullsize.jpg
https://s3-us-west-1.amazonaws.com/h...1_fullsize.jpg
https://s3-us-west-1.amazonaws.com/h...2_fullsize.jpg
Previously:
https://www.homemadetools.net/forum/...085#post210815
https://www.homemadetools.net/forum/...473#post151107
https://www.homemadetools.net/forum/...682#post206019
https://www.homemadetools.net/forum/...979#post144904
https://www.homemadetools.net/forum/...2981#post97744