8. (25) A test needs to be conducted on a 5-meter scale model of a potential flying-wing airliner. The full-scale airliner has a length of 60 meters, is designed to fly at Mach 0.9 at 30000 ft (standard atmospheric conditions for that altitude). Design a wind tunnel test (specify velocity, pressure, and temperature) to ensure flow similarity between the subscale and full-scale designs.