The primary objective of this effort will be the development of a cost methodology for Premilestone I planning for emerging technology weapons systems/subsystems. The proposed effort also addresses cost related activities for progression through Premilestone 0 and Phase 0 leading up to a successful Milestone I decision. Aeronautical Systems Division (ASD) emerging technological issues as they relate to establishing a reliable defensible, and traceable cost estimating methodology will be addressed. These technologies include integrated avionics architectures, turbine engine capabilities, high temperature materials, and dollar/pound relationships. Approach: Axiom will utilize existing and updated approaches for this cost methodology development effort. Axiom's approach includes development of an overall Premilestone I cost estimating and modeling approach, development of data collection plan based on ASD/XRF and axiom references, development of a modelling and cost estimating relationship (CER) plan, construction of a sample model, proof of methodology concept through modeling of a specified asd technology, and development of a Phase II plan which evolves from the Premilestone I cost estimating methodology. Results: results of the Phase I effort include an emerging technology Premilestone I cost estimating methodology, data collection plan, CER development plan, proof of methodology concept, and Phase II planned approach.