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. Design goals envisioned a 300 passenger capacity with a 5,000 nautical mile range. Projected cruise speed was between Mach 1.6 and Mach 2.4.