A Rapid Method for Verifying Temperature Drop in Aircraft Landing Gear Brakes Using CFD and Thermal Equilibrium

Accurate prediction of the temperature drop in aircraft main landing gear brakes is crucial for improving aircraft landing safety and reducing aircraft turnaround time. A rapid method for verifying this temperature drop using computational fluid dynamics (CFD) and thermal equilibrium analysis is employed to investigate the environmental factors affecting the heat dissipation rate of brake discs in the air. A response surface model of the heat transfer coefficient of the brake disc is established, considering environmental factors such as brake disc temperature, air pressure, and external temperature. Dynamic simulations and modeling are conducted to analyze the variation in brake temperature drop throughout the entire process from takeoff to aircraft landing. Validation through multiple sets of flight test data indicates that the calculated brake temperature deviates from the measured temperature by no more than 10 ℃ throughout the flight process. This validates the accuracy and feasibility of the simulation model in predicting brake temperature before landing, providing a crucial reference for enhancing the reliability of aircraft design.