High Quality Content by WIKIPEDIA articles! Even before the Apollo moon landing in 1969, in October 1968, NASA began early studies of space shuttle designs. The early studies were denoted "Phase A", and in June 1970, "Phase B", which were more detailed and specific. The primary intended use of the space shuttle was supporting the future space station. This function would dictate most of the shuttle`s features. The U.S. Air Force was also interested in using the shuttle, and NASA welcomed their participation and influence to ensure political and financial support for the shuttle program.