Multiple domain experience in systems engineering using an executable specifications tool

Much of the imprecision of current specifications stems from the fact that many interpretations are possible when the language used has no formal semantics. However the use of formal languages often results in specifications understandable only by experts. A systems engineering tool embodying intuitive graphical formal languages allows executable specifications to be built, and makes formal methods accessible. The paper describes the advantages of such a tool based on several years of experience in space, robotics, commercial airplanes, automobile engineering and medical imaging