This book describes a parametric model that can help people reason about their decisions related to systems engineering. COSYSMO, the Constructive Systems Engineering Cost Model, contains eighteen parameters: four size drivers and fourteen effort multipliers. It is built on a framework similar to its well-known predecessor, COCOMO II, and integrates accepted systems engineering standards to define its scope. The model focuses on large-scale systems for military applications that employ a disciplined approach to systems engineering. Data were collected from six aerospace companies in the form...