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The main objective of this research is to provide better controlling and stability to B767 aircraft, where a study of elevators for pitch control for the described longitudinal movement is conducted. Intelligent controllers are designed and introduced to the surfaces of the linearized model of B767 aircraft, to identify the performance level based on time response and stability analysis by using different transfer functions. Self-tuning PID Controller and designed hybrid intelligent controller with a combination of PID controller and fuzzy controller are proposed along with few sensors installation to obtain results. A comparative assessment and quantitative analysis of controllers are carried out using MATLAB Simulink. This research has shown that the performance of the aircraft has improved significantly. [ABSTRACT FROM AUTHOR]

The purpose of this study is to improve the cooling of brake disc by modifying the wheel rim by fitting it with an axial ventilator. The orientation angle of these blades in axial ventilator is varied between 0 ° and 10 °. The numerical investigation is carried out using commercial CFD code ANSYS Fluent. The pressure difference induced in 5 ° model is maximum leading to a better air flow through the wheel rim resulting with enhanced cooling of the brake disc. The 5 ° model reduced the brake disc temperature from 450 °C to 207.84 °C which is nearly 54%. The surface heat transfer coefficient and Nusselt number of 5 ° model is found to be maximum. The resulting improvement in heat dissipation enhances the performance and hence the lifetime of the brake disc. Therefore, the wheel rim with axial ventilator 5 ° model is found to the suitable configuration so as to achieve enhanced convective cooling of brake disc. [ABSTRACT FROM AUTHOR]