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Old 1st Oct 2003, 23:28   #1 (permalink)
 
Join Date: Oct 2003
Location: South Eastern USA
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Question 777 climb profile

For a fully loaded 777-200ER, what are the usual T/O and climb EPR's, climb rates and air speeds:
1. after takeoff up to 10,000 ft
2. between 10,000 ft and the cruise FL

Is it possible for this bird to achieve a climb rate in the range of 7000 fpm at 250 kias ?

Thanks
Adam
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Old 2nd Oct 2003, 00:43   #2 (permalink)
Couldonlyaffordafiver
 
Join Date: Dec 2000
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It depends largely on the Cost Index (that magical number between 0 and 999) which is input into the FMC. This is effectively a figure which relates costs, such as fuel or crew wages, to the flight to time. Basically a CI of zero is minimum cost and a CI of 999 is maximum speed (if I remember rightly).

We normally operate a CI of 100 which gives a climb of around 320kts/M0.83, a cruise of M0.84 and a descent of M0.825/300kts. Give or take. The rate of climb varies depending upon weight although it's normally between 1000fpm and 2500fpm depending upon the speed.

Quote:
Is it possible for this bird to achieve a climb rate in the range of 7000 fpm at 250 kias ?
I've seen 4500fpm having 'zoomed' it but I'd be surprised if 7000fpm was possible. No doubt a test pilot will now prove me wrong!
Human Factor is offline  
Old 2nd Oct 2003, 01:19   #3 (permalink)
 
Join Date: Aug 2003
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I think the FAA test flight record for the 777 is in the 7700 fpm range if I remember correctly. I have had at 11,000 fpm in the simulator. The guys waiting outside said they thought we were heading for the moon with how the sim "Squated.
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Old 2nd Oct 2003, 06:22   #4 (permalink)
Couldonlyaffordafiver
 
Join Date: Dec 2000
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Told you!!

(Got 9600 fpm downhill out of a A319 once though .... my Dad's bigger than your Dad!! )
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