Biomechanical human model of pilot operation posture

According to combining of anthropometry and theoretical mechanics effectively, the biomechanical human model is built based on the typical operation postures of pilot. Through theoretical calculation and ergonomics analysis of the waist load influencing factors, arrive at the following conclusions: lumbar joint force is closely related to trunk angle; for seat operation, the trunk angle should be kept in -10°~15° to reduce the lumbar load; there should not be excessive tension when body leans forward or excessive thrust when body leans backward; in order to alleviate the joint force and torque, the right-left manipulating forces should be as least as possible; the shorter operator has a smaller waist load under the same conditions. This paper verified the feasibility of the biomechanical human model based on the software JACK. For the model can reasonably describe the lumbar joint force conditions in various operation postures, it will offer a valuable reference for biomechanical analysis of pilot´s working postures.