“…In the past three years, many papers have appeared on applying AI techniques to engineering problems especially in the aerospace and automotive industries (3,4,5,6,7,8,9,10,11,12). Many of these applications involve developing expert design systems such as EXFAN (13) for the design of cooling flow fans or LOKI (14) for the design of aircraft wings in which all of the information needed to design the component is encapsulated in a series of rules.…”