Systems engineering activities for a typical project have been discussed by categorizing the timeline cycle into several sections. The time duration of each section depends on the project. Following is a life cycle model proposed in [https://www.incose.org/products-and-publications/se-handbook INCOSE SE Handbook]: <br/><br/>

===[[Concept Phase | Concept]]===

This phase deals with coming up with the concept for the system. The design begins with understanding the need behind the design, understanding the set objectives and coming up with our expectations of the final product or prototype. The design should start with writing needs into more formal statements known as requirements. Needs are informally, qualitatively expressed expectations from the final design. It is necessary to translate them into formal statements which make more sense from a technical perspective. Requirements are statements which are quantifiable. Concept stage also involves the planning of the project. Various aspects regarding the activities to be performed for the successful execution of the project are laid out.

==Vee - Model==

All of the major phases of the life cycle model are often visualized with a graphical ‘Vee’ (or V) model representation of the processes and stages of a program development (See figure). Although there might be overlapping stages & processes within the different phases of the system life cycle model, the sequence of processes depicted in the graphical ‘Vee’ model are designed to provide a structured framework for completing the design and verification of a system.

As depicted, the phases begin from the upper left section, and subsequently are worked downward to the center, and then upward again onto the upper right side. <br/>

The initial phases of the life cycle model, as mentioned earlier, capture the system-wide requirements, various elements of the system, as well as concepts for realising the system.<br/>