OPTIMUM-AIV eduling Syste for

Abstract 1 Introduction This paper presents a project undertaken for the Euro- pean Space Agency (ESA). The project is developing a knowledge based software system for planning and scheduling of activities for spacecraft assembly, inte- gration and verification (AIV). The system extends into the monitoring of plan execution and the plan repair phases. The objectives of the contract are to develop an opera- tional kernel of a planning, scheduling and plan repair tool, called OPTIMUM-AIV, and to provide facilities which will allow individual projects to customize the kernel to suit its specific needs. The kernel shall con- sist of a set software functionalities for assistance in initial specification of the AIV plan, in verification and generation of valid plans and schedules for the AIV activities, and in interactive monitoring and execution problem recovery for the detailed AIV plans. Embed- ded in OPTIMUM-AIV are external interfaces which allow integration with alternative scheduling