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In this paper, a complete simulation model of steering system of nose landing gear and towbarless traction is established based on LMS Virtual.Lab Motion. And the B737-800 aircraft was taken as the research object to simulate the steering condition of the towbarless traction. The load of the steering system of the nose gear are simulated and analyzed under various steering conditions. The simulation results show the influence of the changes in the steering angle, steering rate and traction rate on the steering system, and provide some reference for further research on the safety of towbarless traction.

In this paper, an H‐type electric/hybrid electric aircraft propulsion architecture is proposed to address the issues associated with the radial electric propulsion architecture. In a radial architecture, a fault on the main bus or failure of the generator leads to shut down of all the propulsion motors in that channel, thus increasing the burden on the remaining motors to maintain the power required by the aeroplane. As a result, it is necessary to oversize the motors for the purpose of compensating for the loss of other motors. To mitigate these issues, a new H‐type architecture is introduced to isolate the particular faulty section while still maintaining power flow to the remaining healthy motors. The proposed architecture minimises the oversizing of various components in the system as compared to radial propulsion architecture. The sizing of components and the amount of overall mass reduction is discussed by using the proposed architecture. Typhoon Hardware in the Loop platform is used to validate the performance of both the architectures for faults at different locations, and the results are presented.