Logistics Composite Model (LCOM) Workbook

Determination of maintenance manpower requirements has always been a difficult task. The initial maintenance manpower determination for a new weapon system has been provided by the contractor through the Quantitative, Quantitative Personnel Requirements Information QQPRI. The QQPRI was developed after the design tradeoffs had been accomplished and was usually based upon fixed assumptions which were not responsive to the dynamic missions of the Air Force and limited to hands-on or corrective maintenance tasks. The QQPRI also failed to recognize the manifold tasks associated with the complete maintenance action. It also lacked flexibility, because only a single phase of a scenario was faced in its computation of manpower requirements. Identification and forecasting of maintenance manpower requirements during testing under variable mission scenarios is a vital yet difficult task. Mathematical simulation has been identified as the best method to solve this requirement for new weapon systems. LCOM fulfills the simulation task since it permits the user to define a realistic operational and logistical scenario. LCOM is a most versatile and flexible data processing tool which permits the user to vary the operations, maintenance, and supply data inputs to test a given capability. Impact of changes to design configuration, type of sortie, maintenance policies and concepts, and spares levelling can be readily assessed and updated as additional data are obtained, making LCOM a dynamic simulation model.