Jun 23, 2023
Space Shuttle Development: North American Rockwell Phase C Shuttle
Concept art of the North American Rockwell Design C-040A*. This has some notable early features that didn't make it to the final design: the RCS on the wingtips and vertical stabilizer, the raised flight deck and higher/deeper fuselage.
Date: 1972
NASA ID: S72-1200-S
* based on the design lineages and posted secretprojects.co.uk: link