Identify and Prioritizing the Critical success Factor of the New Product Development with Fuzzy Inference System

New product development (NPD) as modern approach applied for facing to environmental changes and is necessary to enter and remain (or survive) in competitive environment and achieve competitive advantages. Firms according to identify the critical success factors (CSF) of NPD and obtain the profitable results from these factor, can achieve competitive advantages. Researchers analysis CSFs of NPD in 35 years and concluded that managing of new product is more important factor. The important of NPD in complex and product system (CoPS) is highlighted. The firm can assess the process whit CSF’s and improve the process and achieve effectiveness of activities.Studying the relevant article and literature reviews, 40 factors influencing the success of NPD has identified in this paper. Applying fuzzy inference system (FIS) and studying some aerospace project as NPD projects that is relevant with CoPS, in the next step, input variety (the level of activity of factor in NPD projects and the level of project success from the viewpoint) and indicator (cost, time and quality of NPD’s product) are analyzed. The MATLAB software and SAJENO model of FIS were applied for analyzing of data. As result, the selected CSF’s whit brainstorming is categorized in 3 groups: development team abilities, organizational resources and organizational process and 20 factors as CSF of NPD identified and prioritized. Thus, focusing in these factors, managers can achieve the competitive advantages.