flight idle N1
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Join Date: Mar 2006
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flight idle N1
Hi
Can anybody tell me what the flight idle N1 ranges are for B777 equipped with any of the 90,000 lbs engines (200ER with either GE, PW, or RR). How does that value change with altitude ? Also, what is the N1 figure for approach idle and when does the approach idle kick in ?
Thanks
Adam
Can anybody tell me what the flight idle N1 ranges are for B777 equipped with any of the 90,000 lbs engines (200ER with either GE, PW, or RR). How does that value change with altitude ? Also, what is the N1 figure for approach idle and when does the approach idle kick in ?
Thanks
Adam
Join Date: Nov 2005
Location: London, Engeeerland!
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Can't remember what the N1's are but the type of engine idle is dictated by the EEC. Approach idle kicks in when the flaps are away from up or when engine anti-ice is detected/on - i.e. to aid with the go-around case for spool up times!
