A methodology is presented which uses commercial design and analysis software and the Internet to perform concurrent multidisciplinary optimization. The methodology provides a means to develop multidisciplinary designs without requiring that all software be accessible from the same local network. The procedures are amenable to design and development teams whose members, expertise and respective software are not geographically located together. This methodology facilitates multidisciplinary teams working concurrently on a design problem of common interest. Partition of design software to different machines allows each constituent software to be used on the machine that provides the most economy and efficiency. The methodology is demonstrated on the concurrent design of a spacecraft structure and attitude control system. Results are compared to those derived from performing the design with an autonomous FORTRAN program.Woodard, Stanley E. and Kelkar, Atul G. and Koganti, GopichandLangley Research CenterMULTIDISCIPLINARY DESIGN OPTIMIZATION; INTERNETS; DESIGN ANALYSIS; APPLICATIONS PROGRAMS (COMPUTERS); COMPUTER AIDED DESIGN; FORTRAN; SPACECRAFT STRUCTURES; AUTONOMY; ATTITUDE CONTROL...