A requirement analysis process characterized by first whole qualitative analysis then separate quantitative analysis is proposed. Several typical operational concepts are set up and military key requirements are defined by them. Through using the DoDAF framework to analyze the operational concepts, equipment operational capabilities requirements are obtained. The use case method is incorporated and the capabilities are separated into several use case teams. Each use case defines a few functional scenes, by which the missions and operational environments are covered and from which the tactical and technical performance requirements are all drawn. By means of the tracing relativity between requirements and scenes, an agile requirement change process for responding to customers and technical staff demands is proposed. A hypothetical transport helicopter is taken as an example to interpret the process.

military helicopter  /  tacticle and technical performance reqairements  /  military equipment