A life cycle for commercial and aerospace systems-discovery

Defines a life-cycle that is tailorable to either commercial or aerospace system developments. The tailorability is accomplished by separately describing the product life-cycle, the acquisition cycles, and the technical steps used in performing the systems engineering. In addition, this life-cycle is based on the discovery of issues. The life-cycle described differs from both the waterfall model (Royce, 1970) and the spiral model (Boehm, 1986) in significant ways that make it applicable to the work that occurs on time- and cost-sensitive projects.<
>