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The wide-body airplane’s unsynchronous coordination of the inner and outer steering body-tires turning angle during the ground turning process will increase the lateral force of the tires and cause side slip accidents. This paper considers the dissymmetry of the inner and outer steering body-tire turning angles during the ground turning process, calculates the theoretical turning angle mathematical relationship between nose-tire and steering body-tire, optimizes the steering body-tire control strategy from "symmetric turning angle control strategy" to "dissymmetric turning angle control strategy". By comparison, the optimized "dissymmetric turning angle control strategy" can effectively reduce the lateral force of steering body-tires during the ground turning process, decrease the risk of side slip accidents and tire abrasion. Besides, the optimized "dissymmetric turning angle control strategy" can reduce the lateral force difference between the inner and outer steering body-tires during the ground turning process, making the lateral force distribution more balanced, reducing the damage to landing gear structure caused by unbalanced lateral force and extending the service life of body landing gear.

Steering body-tire angle control strategy optimization of wide-body airplane ground turning