Integrated Engine Pressure Ratio
From Wikipedia, the free encyclopedia
The Integrated Engine Pressure Ratio (IEPR) is the ratio of the pressure at the core engine exhaust and fan discharge pressure compared to the intake pressure to the gas turbine engine.
In some gas turbine engines the engine pressure ratio (EPR) is used, which is the core engine exhaust pressure compared to the intake pressure to the gas turbine engine.
[edit] Notes
Integrated Engine Pressure Ratio (IEPR) is an engine indicator system unique to the Rolls-Royce_RB211.
[edit] See also
Turbofan and Gas_turbine_engine
[edit] References
Source: Rolls Royce Method for evaluating the working line characteristics of a compressor of a gas turbine engine US Patent 5010727
Source: The Boeing Company Engine thrust control system US Patent 4248042 Includes Boeings discussion on EPR or IEPR being a better indicator of thrust.
