Traditional Systems Engineering Process model 16.422 ACQUISITION PHASE UTILIZATION PHASE N E Conceptual- Detail Design andProduction Product Use. Phaseout and E Preliminary Design Development land/or Construction D Operational requirements drive technical performance measures which drive human factors requirements Human considerations often are low priority Blanchard,B. s, Fabrycky, w.J(1998). Systems Engineering and Analysis(3rd ed. ) Upper Saddle river, NJ: Prentice HallTraditional Systems Engineering Process Model* 16.422 Product Use, Phaseout, and Disposal Production and/or Construction Detail Design and Developme nt Conceptual￾Preli minary Design ACQUISITION PHASE UTILIZATION PHASE N E E D • Operational requirements drive technical performance measures which drive human factors requirements….. – Human considerations often are low priority *Blanchard, B. S., & Fabrycky, W. J. (1998). Syste ms Engineering and Analysis (3rd ed.). Upper Saddle River, NJ: Prentice Hall