Abstract
In response to changing needs, a major change in U.S. space transportation policy has occurred in the last few years. The joint Department of Defense/National Aeronautics and Space Administration Advanced Launch System program (ALS) intends to respond to this change in policy. The program, initiated in July 1987, completed Phase I at the end of August 1988 and is currently in Phase II. The ALS is cost optimized, rather than performance optimized, and will utilize advanced technology and innovative management and design approaches to achieve an ambitious congressionally mandated cost goal of $300/lb to low Earth orbit by the year 2005. The technological innovations will directly benefit other U.S. space transportation programs, such as the commercial programs and the National Aero Space Plane (NASP).
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