The problem of scaling down fuel control components for small (1000 hp or less) gas turbine engines and the tradeoff of cost versus performance is discussed. A comparison of design approaches versus requirements is presented to illustrate the type of compromises that must be considered. The effect of engine design requirements is presented in terms of control complexity and cost. Specific examples of design and the effect on cost of various requirements are discussed in detail. The examples of compromise versus cost are presented to illustrate “cost effectiveness” of performance requirements and a general method of how lower cost may be achieved.
