Glossary
What are transonic airfoils, and what is the active clearance control? Check out our technical dictionary and find out more about engine technology terms – from active clearance control to velocity triangle.
Thermal barrier coatings
Thermal efficiency
Thermal spraying
Thrust class
Thrust-to-weight ratio
Total stage efficiency
Transonic airfoils
Turbine
Turbine engine
Turbofan engine
Turbojet engine
Turboprop engine
Turboshaft engine
Thermal efficiency
The thermal or internal efficiency of an aero engine is the ratio between the amount of heat converted into work and the total amount of heat supplied. The thermal efficiency is a measure for the quality of an engine. It depends, among other factors, on the pressure ratio, the ambient temperature, the turbine inlet temperature, the combustion efficiency, the flight velocity and flight altitude.
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