Jets 1
This was the first type of gas turbine engine invented.
What is a turbojet engine?
This turbine engine uses a propeller to create most of its thrust.
What is a turboprop engine?
This turbine engine uses a large fan to move extra air around the engine core.
What is a turbofan engine?
This turbine engine is commonly used to power helicopters.
What is a turboshaft engine?
These are the five main sections air passes through in a turbojet engine.
What are intake, compressor, combustion chamber, turbine, and exhaust?
A turboprop is basically a turbojet engine connected to a propeller through this system.
What is a gearing system?
This type of turbine engine is commonly used on modern airliners because it is more efficient and quieter than a pure turbojet.
What is a turbofan engine?
Instead of producing most of its useful power as jet thrust, a turboshaft produces this type of power.
What is shaft power?
This section increases the pressure of incoming air before it reaches the combustion chamber.
What is the compressor?
This component slows the turbine shaft speed so the propeller can turn efficiently.
What is a gearbox?
This term describes air that goes around the engine core instead of through the combustion chamber.
What is bypass air?
In a helicopter, a turboshaft engine usually sends power to this system.
What is the rotor system?
Turbojets are capable of very high speeds, but they are also known for these two major disadvantages.
What are high fuel consumption and loud noise?
Turboprops are generally most useful at these speeds compared with pure jet aircraft.
What is low-to-moderate speed flight?
This ratio compares the amount of air bypassing the engine core to the amount passing through the core.
What is bypass ratio?
A turboshaft is similar to a turboprop, but instead of turning a propeller, it usually turns this through a transmission.
What is a rotor?
In a turbojet, this part acts like a windmill and extracts energy from hot gases to spin the compressor shaft.
What is the turbine?
At higher speeds, this part of a turboprop becomes less efficient due to aerodynamic limits.
What is the propeller?
This type of turbofan moves a large amount of air around the core and is commonly used for efficient subsonic airliner flight.
What is a high-bypass turbofan?
This is the kind of useful output a turboshaft engine provides to drive helicopter rotors or other machinery.
What is shaft horsepower?