The lift of the aircraft is generated by the principle of aerodynamics. In short,The lift of an aircraft is caused by the pressure difference created by the flow of air on the surface of the aircraft's wings.
The airplane surface is designed to have a slightly curved shape called an airfoil. The upper surface of an airfoil is usually longer than the lower surface, i.e. it takes on a convex shape. When an airplane is in flight, the wing surface interacts with the air flow, resulting in lift.
When an airplane flies, air flows through the wing surface. Due to the special design of the airfoil, the air flowing through the upper surface is faster, while the air flowing through the lower surface is slower. According to Bernoulli's law, the faster the flow rate, the lower the air pressure, and the slower the flow rate, the higher the air pressure. As a result, a pressure difference is formed between the upper and lower surfaces of the airplane's wing surface.
On the upper surface of the aircraft, low pressure helps to create an upward lift force. When air flows over the upper surface of the wing surface, it creates a lifting force above the wing surface due to the lower pressure. This upward force is known as lift. The magnitude of the lift depends on factors such as the design of the airfoil, the speed of the aircraft, the area of the airfoil, and the density of the air.
In addition, the wingtips of the aircraft also have an impact on lift. The flow of air at the wingtips creates a vortex called a wingtip vortex. The wingtip vortex creates a downward pressure called the vortex effect. The vortex effect can increase lift and improve the performance of the aircraft.
However, the low pressure on the upper surface alone does not create enough lift to support the entire aircraft. As a result, aircraft are also often equipped with auxiliary equipment such as flaps and ailerons to regulate the aircraft's lift and maneuverability.
To sum up, the lift of an aircraft is generated by the interaction of the airplane surface with the air flow. Through the design of the airfoil, a low-pressure area is created above the wing surface, which creates an upward lift. The scroll effect and auxiliary equipment also play an important role in the generation and regulation of lift.