After over 200 man-years of studies, NASA is able to give the specifications for the Space Shuttle: Two-stage-to-orbit, vertical takeoff, horizontal landing configuration, Initial operational capability by the end of 1977, 6800 kg payload to a 500 km, 55 deg inclination orbit when launched from Cape Canaveral, 4.6 mx 18.3 m payload bay; 7-day orbital mission capability; Design to be capable of 25 to 70 launches a year, with a turnaround time of two weeks; G-forces limited to 3G on ascent; Two crew housed in a pressure cabin without spacesuits; Capable of landing under FAA Category 2 conditions on a 3,000 m runway
