Program 4, Episode 104

Go "Behind the Scenes" and see how the Hyper-X program is developing new hypersonic vehicles that might one day take you into space. See how composite materials are revolutionizing aircraft technology in “Tech Watch”. Meet Francis Rogallo, inventor of the modern hang glider as part of the "Retrospective" segment and see how NASA researchers test aircraft and Space Shuttle tires in the "On the Runway" segment. Plus find out how wind tunnels work.