Anyway, United Technologies had completed a major DOD funded study on a Mach 3-Mach 5. The summary was published in Aviation Week. That was a RAM-JET to SCRAM-JET system. The Goal was the same and a rumored “skunk” prototype was expected. The goal was the same as American aviation was concerned of the rumor of a European Super Sonic airliner. The Concorde of course became a reality. This would be welcome step forward. As now advanced materials which did not exist in the mid 60’s prevented the United Technologies project from becoming a reality. Best of Luck.
]]>