The McDonnell Douglas High Speed Civil Transport was a proposed supersonic airliner design that was the subject of internal and NASA contract studies in 1996.
It was envisioned at a time when the company was struggling to compete in the commercial aviation market and would ultimately never progress beyond a paper design.
[1] McDonnell Douglas conducted internal and NASA contract studies to determine the market requirements for a High Speed Civil Transport (HSCT) and resolve environmental, economic and technical issues.
"McDD is participating in an international study group exploring the HSCT concept, with Aerospatiale, Boeing, British Aerospace Daimler-Benz, Japan Aircraft Industries, Alenia and Tupolev.
A conceptual design illustration showed a long narrow fuselage with four podded engines under sharply raked fixed delta wings mounted low at mid-fuselage and a swept cruciform tail, looking not unlike the cancelled Boeing 2707.