A turbojet engine, on the other hand, is a type of jet engine in which all of the air taken in by the engine passes through the core, where it is compressed, heated, and expanded to produce thrust.
The main difference between a turbofan and a turbojet engine is the presence of a fan in the turbofan engine. This fan provides additional thrust and improves fuel efficiency by accelerating a large portion of the air taken in by the engine.
Other differences between turbofan and turbojet engines include:
- Size: Turbofan engines are generally larger than turbojet engines.
- Complexity: Turbofan engines are more complex than turbojet engines.
- Noise: Turbofan engines are generally less noisy than turbojet engines.
- Emissions: Turbofan engines produce lower emissions than turbojet engines.
Here is a table summarising the key differences between turbofan and turbojet engines:
| Feature | Turbofan | Turbojet |
|---|---|---|
| Fan | Yes | No |
| Additional thrust | Yes | No |
| Fuel efficiency | Improved | Not improved |
| Size | Larger | Smaller |
| Complexity | More complex | Less complex |
| Noise | Less noisy | More noisy |
| Emissions | Lower | Higher |
Overall, turbofan engines are more efficient and produce lower emissions than turbojet engines. They are also quieter and generally larger in size. Turbojet engines are less complex and more powerful, but they are also less efficient and produce higher emissions.
