THEi programme will explain the design principles of various parts of the aircraft from the perspectives of physics, thermodynamics, fluid mechanics, etc. We will also use instruments such as wind tunnels, flight simulation systems and computer software to conduct various experiments, such as testing the effects of different levels of thrust and drag on aircraft engines and propellers, so as to understand the performance of wings under different wind speeds. This knowledge made me understand why an aircraft with a take-off weight of more than 380 tons can soar into the sky.