Advanced Composite Mast (ACM) for UMM

The Advanced Composite Mast (ACM) comprises the Guide Trunk and Fairing Assembly of the Universal Modular Mast. These components comprise 80% of UMM weight and are excellent candidates for composite part replacement. By converting both parts from duplex stainless steel weldments to composite designs, 900 pounds or 20% of the total UMM system weight can be eliminated. Design concepts shall be developed and sized for applied loads and stiffness requirements. Trade studies of weight, cost and manufacturing methods shall be performed such that optimized designs for both components shall be selected and defined in detail. Reliable weight and cost estimates shall then be prepared. A key feature in both components are linear bearings riding in precision slide tracks to guide the double-acting telescoping elements of the UMM. The ability of a molded composite part to achieve necessary dimensional tolerances, surface finish and cycle life (wear) in UMM operations shall be demonstrated via representative test articles with internal molded slide tracks. By molding these features (versus machined in the stainless parts), considerable machining cost can be eliminated, enhancing ACM affordability. KCI shall apply its considerable expertise developing similar, related composite parts for defense and marine applications.