* Air Resistance: Planes are designed to fly, but they still need to overcome the friction of air molecules pushing against them. This is called air resistance or drag.
* Thrust: Engines generate thrust by taking in air, compressing it, and pushing it out at a higher velocity. This difference in velocity creates a force that propels the plane forward.
* Liftoff: As the plane accelerates forward, the wings generate lift, a force that pushes the plane upwards.
Types of Airplane Engines:
* Jet Engines: These are the most common type of engine in modern airplanes. They work by compressing air, mixing it with fuel, and igniting it to create hot, expanding gases that push the plane forward.
* Propeller Engines: These engines use a propeller to push air backward, generating thrust. While less common on modern airliners, they are still widely used in smaller planes.
* Turboprop Engines: These are a hybrid of jet and propeller engines, using a turbine to drive a propeller. They offer efficiency and power.
In summary: Planes need engines to generate thrust, which is essential for overcoming air resistance and lifting the plane off the ground.
