[SunkenCiv]

The SST was cancelled thanks to LBJ’s and his Demwit congress’ massive budgets; basically, the Vietnam War devoured everything, including, eventually, the Apollo program. There were, if memory serves, three companies competing for the SST contract. As it worked out, the Concorde lost money throughout its operational life, and was looked at as a flying limo for those who didn’t think flying first class on a regular airliner was good enough.

Ah, there were three in the US:

http://www.airvectors.net/avsst.html

[lbryce]

Thanks for the information. Much appreciated. :-)

[Yo-Yo]

The SST was canceled because the US insisted on a Mach 3 aircraft, and found the technical challenges to be too great, and the costs way too high. The XB-70 Valkyrie showed what materials needed to be used and they were too costly for commercial use.

The Franco-British consortium (later to become Airbus) decided that Mach 2 was fast enough thus the Concorde was born.