Abstract: To design of civilian aircraft product, the author uses the application of human-computer ergonomics principle and JACK software to simulate civil aircraft maintenance task and assess the ergonomic. Firstly, the engine UG model is imported to JACK software to creat the analysis objects and simulation objects. Secondly, virtual human body model is set up, then the virtual people and maintenance object are put into 3D virtual environment. In the simulation module, the maintenance task simulation is completed. Finally, JACK software ergonomic assessment tools are used to evaluate maintenance task simulation results and the improvement opinion is put forward which verify the serviceability of the product and reduce the manufacture cost.

Key words:  maintenance task, virtual simulation, ergonomic assessment