747 fuel flow during T0

From:         Nik Waalewijn <nwaalewijn@dataweb.nl>
Organization: Desorganised Inc.
Date:         27 Aug 95 14:37:15 
View raw article
  or MIME structure

Last week somebody asked about the 747 fuel flow during take off.  Because
the answers were not all the same I've been looking for some data in the
CMC.  I have found a full rated T.O.  at max.  weight and a derated T.O.
at very light weight so you can see the difference.

The aircraft is a 747-400 series, CF6 engines:

TOW: 396.900 kg (= MaxTOW)
SAT: 24 C
N1: 106 percent (full rated)
Fuel Flow: 9700 kg/hr/eng

TOW: 233.000 kg (= very light)
SAT: 11 C
N1: 95 percent (max. derated)
Fuel Flow: 7000 kg/hr/eng

All data was measured just after lift off at a sea level airport.



--
Nik Waalewijn <nwaalewijn@dataweb.nl>