The aerodynamic math model is one of the more important areas of a simulator design. The simulation industry needs a standard to use, not only for the data structure of the aerodynamic model, but also for the aerodynamic coefficient build-up logic. If and when the Department of Defense acquires a highly reusable aerodynamic math model, implementation of this model will be more cost-effective and streamlined on future simulation contracts. This would allow future combat trainers to be fielded quicker at a lower cost to the taxpayer. The use of the Ada language directly supports the creation of a reusable aerodynamic math model. One of the major goals in the development of Ada was to promote software that could be applied to future designs, thus making the reinvention of previous work unnecessary. Reusable components do not automatically fall out from the use of Ada. Reusability requires careful specification and design. Ada provides features such as packages, generics, unconstrained array types, and others that allow easier construction of reusable components. This paper presents an approach toward the development of a reusable aerodynamic math model for fixed-wing aircraft in the Ada language.