Which part of a gas turbine engine is primarily responsible for lifting the aircraft during takeoff?

The fan in a gas turbine engine is primarily responsible for generating the thrust needed to lift the aircraft during takeoff. The fan works by drawing in a large volume of air and accelerating it backward, which, according to Newton's third law of motion, results in an equal and opposite reaction that propels the aircraft forward. This thrust is critical during takeoff when the aircraft needs to achieve sufficient speed and lift to become airborne.

While other components like the low-pressure turbine, compressor, and burner play essential roles in the overall operation of the engine, they do not directly generate the necessary thrust for takeoff. The compressor increases the pressure of the incoming air, the burner mixes the compressed air with fuel and ignites it to produce high-temperature gases, and the low-pressure turbine extracts energy from these gases to drive the fan and compressor. However, it is the fan that directly impacts the thrust and lift during the initial phase of flight.