Design analysis of gear drive cantilever moment loading system for aviation accessories
WEN Wuyi
LIU Huaiju
LI Yanjun
ZHAO Xinhao
CHEN Taimin
WU Jizhan
Abstract：[Objective]To simulate the conditions of multi-directional variable-load cantilever torque borne by aero-engine accessory gearboxes during complex aircraft maneuvers,a cantilever torque loading device for aero-engine accessory gearboxes was proposed.[Methods]Firstly,to address the insufficient multi-directional loading capability of existing common weight loading devices to simulate the high-altitude environment of the accessory gearbox,a cantilever moment loading device based on electromagnetic loading was designed for the accessory gearbox,which could achieve multi-directional cantilever moment loading under flight conditions such as level flight,constant speed hover,and accelerated rolling.Secondly,based on Maxwell's electromagnetic field analysis and analysis of the effect of deformation on air gap,it was concluded that the device could achieve a unidirectional-600 N to 600 N load,and the structural deformation accounted for only 4.3%of the air gap,verifying that the device was structurally reliable and met the loading requirements of a 3 kg attachment with a 20g load.Finally,the current control strategy of the device was obtained for flat flight,constant speed hover,and accelerated rolling flight attitudes.[Results]Through the aforementioned analysis,it is verified that this device has the capability to simulate complex cantilever torques under multiple attitudes.
Keywords：Accessory gearboxGear driveCantilever moment loadingElectromagnetic field simulationHigh altitude load simulation
Publication Date：2025-08-15
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：10( 59-68 )