Abstract
The decisions in the initial design stage make large impact upon all life cycle of product more than the other stages. The concept of FOA (First Order Analysis) is proposed for the initial design stage, and the framework of connecting 'design' and 'analysis' is essential to achieve FOA. On the top of that, three important factors of the initial design supporting system, that is to say simple, flexible and gradual, are listed up in this report. Then a initial design supporting system based on authors' developing 'Top-Down Oriented Design Support System' are implemented. This initial design supporting system embodies the proposed FOA framework, and some exmaple of applying to the initial design of Human Powered Boat are shown.
