Book excerpt: This report consists of a survey of the state of the art in uncertainty-based design together with recommendations for a Base research activity in this area for the NASA Langley Research Center. This report identifies the needs and opportunities for computational and experimental methods that provide accurate, efficient solutions to nondeterministic multidisciplinary aerospace vehicle design problems. Barriers to the adoption of uncertainty-based design methods are identified. and the benefits of the use of such methods are explained. Particular research needs are listed.Zang, Thomas A. and Hemsch, Michael J. and Hilburger, Mark W. and Kenny, Sean P and Luckring, James M. and Maghami, Peiman and Padula, Sharon L. and Stroud, W. JeffersonLangley Research CenterAEROSPACE VEHICLES; DESIGN ANALYSIS; UNCERTAIN SYSTEMS; SURVEYS