Nozzle efficiency in aircraft design refers to how effectively the propulsion nozzle converts the high-velocity exhaust gases from the engine into thrust. It’s a measure of how well the nozzle design contributes to the overall propulsion system’s performance.
The nozzle efficiency (η_n) is typically defined as:
- Nozzle Efficiency (η_n) is a dimensionless quantity, often expressed as a percentage.
- Actual Thrust (F_actual) is the real-world thrust produced by the propulsion system, taking into account losses and imperfections in the nozzle.
- Ideal Thrust (F_ideal) is the theoretical maximum thrust that could be obtained if there were no losses or inefficiencies in the nozzle.