The Use of Functional Analysis to Ensure Value for Money in Complex Engineering Projects

Abstract

A technique that has been used successfully in both naval procurements and concept studies used to inform future naval planning is a form of functional analysis using a structured model built up from various layers. These layers can be used to represent different views of a programme. The upper layers can represent the customer requirement and preferences the lower the engineering solutions. The intermediate layers can be used to represent the functional breakdown and performance achieved by the engineering sub systems. Such an approach has been implemented in a general purpose modelling toolset known as BAEFASIP. This software allows appropriate model structures and operators to be constructed in each layer together with the appropriate linkages between layers. Extensive calculation and output facilities allow both the comparison of multiple solutions and the generation of an optimum Pareto front of solutions against multiple conflicting objectives. Engineering limitations and practicalities are accounted for by tailoring the data layer linkage mechanisms, imposing data value constraints and using powerful rule enforcement facilities to control potential option combinations. The approach and toolset have been successfully used to support two Naval procurement programmes in the UK, a patrol vessel and a complex frigate. More recently they have been used to facilitate studies on the optimisation of alternative ship equipment fits against a range of operational requirements and possible future fleet mixes.