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15th May 2008, 03:18

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Happydays

Join Date: Dec 2006

Location: Earth

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Interview Q

If a brand new engine is producing 60,000 lbs of thrust and indicating 1.8EPR and ten years down the road, it is still indicating 1.8EPR will it still produce 60600lbs of thrust?

Need some help with this? EPR is diff in pressure of PT2 compared to PT7 probe. Will it be correct to say that trust will be the same? But due to the fact than after 10 years the engine will have some damage you will have a higher N1 and fuel burn...and possible a different thrust lever position?

Is this the reason why RR uses EPR for take-off and not N1. If this is the case why do some manufacturers use N1 then to set thrust.

I might be wrong; any advice on this will be appreciated thanks!

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