Definition of Design

The concept of "design" and its management is complex and shall be understood for the purpose of this article to comprise of the following activities performed within the system life cycle.
An acquirer will formulate his requirements (with or without aid from prospective suppliers) and after negotiations, calculations, and demonstrations a 'System Specification' and 'SOW' shall be prepared and agreed which will describe the acceptable requirements to the acquirer. (Define what is possible)
Using the 'System Specification' a number of creative activities; analysis, simulations, allocation, synthesis, and tests on models or prototypes (rapid prototyping) will be performed and the 'System Specification' updated until the functional and allocated baselines are agreed.
Engineering and Manufacturing development phase ensues during which prototypes and pre-production models may be built to finalize a production build standard.
The end-product of the design activity will be drawings, specifications, and design (CSCI and HWCI) descriptions of the comprising system and subsystems. These will be individually approved as the Product baseline. The total product baselines will provide the production baseline from which each system will be produced or manufactured.
Design reviews shall be held incrementally with the aim of satisfying senior management and the customer (acquirer) that the design will satisfy all aspects of the system requirements.

The design should always be at the 'threshold of possibility' to ensure that an effective system is produced within the constraints of cost, timescales, and performance.



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