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Iepr

Old 12th Apr 2004, 18:05
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clear_right
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Iepr

Hi

How does IEPR differ from EPR?

Cheers
 
Old 12th Apr 2004, 21:16
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IEPR is an RB 211 thing, a more accurate measure of engine performance. It is an integrated ratio of Pf + P8/P1 (fan press. + exhaust pressure divided by inlet pressure).
The Trent though has gone for a simpler ratio of exhaust pressure over inlet pressure, and as all engine manufacturers have moved to a standard format for engine station numbers it is a measure of P50/P20
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