[Geometrical dummy used for ergonomic evaluation on early stage cockpit conceptual design].

Objective. Basing on the need of cockpit ergonomic design, to set up a geometrical dummy. Method. Surface partition of the dummy, source of the curved face data, express of the curved face, degree of freedom of the human joint, coordinate system of the parts, position of the human segment centroid and weight of the human segment were cleared up first, then geometrical dummy was displayed with three-dimensional software. Result. The geometrical dummy could simulate some basic body movements and postures for ergonomic analysis. Conclusion. The geometrical dummy was suitable for present study and engineering design.