The Integrated Design and Manufacturing (IDAM) project is bringing modern design, manufacturing, analysis, and test engineering methods to an established operational weapon system, the Submarine Launched Ballistic Missile (SLBM). The philosophy, methods, and constraints associated with technology application to enhance near term support and preserve long term engineering capability are presented. Background. The current Fleet Ballistic Missile (FBM) C4 and D5 systems were developed with engineering software tools and methodologies ...