Epr
Thread Starter
Joined: Sep 2001
Posts: 204
Likes: 0
From: Oz
Epr
Can someone please explain the use of EPR to a lowly turboprop driver? I understand it stands for Engine Pressure Ratio but i read about using it as another tool like airspeed etc. Ie you can set a certain EPR for different stages of flight to get a specific performance. Can someone enlighten me please?
The Reverend
Joined: Oct 1999
Posts: 2,020
Likes: 0
From: Sydney,NSW,Australia
It's a measure of power setting. A certain EPR setting for the prevailing conditions (weight,altitude and temperature) will result in a certain speed akin to an RPM setting. Not a substitute for the ASI though.
Pratt & Whitney and Rolls Royce engines use EPR as the primary indication of thrust, GE use N1 RPM.
Pratt & Whitney and Rolls Royce engines use EPR as the primary indication of thrust, GE use N1 RPM.
