Described is a computer program for the sizing of subsonic and supersonic fighters which has been adapted for use in an aerospace engineering design course. Following a description of the program, an evaluation of its use in the university is presented. It is concluded that computer programs for the conceptual design of aerospace vehicles can play a very important part in design education. First, they give the students an overview of the conceptual design process, and second, they illustrate the capabilities of computers in design. The latter is becoming more important as time goes on because industry is moving in this direction. (Author/CP)