Turbofan Engine and Turboprop Engine Aircraft Engines

     Characteristics of turbojet engines:
High thrust output: turbojet engines can provide very powerful thrust and are suitable for high-speed flight.
Simple structure: Compared with other types of jet engines, turbojet engines have a simpler structure and are suitable for aircraft with high speed requirements.
High fuel consumption: Due to its design principle, the fuel efficiency of turbojet engines is relatively low, especially at lower flight speeds.

Characteristics of turbofan engines:
High bypass ratio: The bypass airflow is larger than the core airflow. This "bypass ratio" brings higher thrust and fuel efficiency, which is particularly suitable for long-distance flights.
High fuel efficiency: Due to the addition of bypass airflow, turbofan engines are more energy-efficient and have lower fuel consumption than turbojet engines.
Low noise: The bypass airflow buffers the exhaust noise and reduces noise pollution during flight.
Wide adaptability: Turbofan engines are suitable for a variety of flight speeds and altitudes, from civil airliners to transport aircraft.

Characteristics of turboprop engines:
Suitable for low-speed flight: Turboprop engines are particularly suitable for use at low to medium speeds, and their efficiency is better than turbofan and turbojet engines at lower flight speeds and lower altitudes.
High efficiency: Compared with turbojets and turbofans, turboprops are more fuel efficient at lower cruising speeds, making them particularly suitable for short-haul routes and smaller aircraft.
Simple structure: Turboprops have a simpler structure and lower maintenance costs, making them suitable for use in small aircraft.
Adaptability: Turboprops are suitable for a variety of operating environments, including short runway takeoffs and landings and harsher geographical environments.
Noisier: Due to the rotation of the propeller, turboprops are generally noisier than turbofans, but quieter than turbojets.