AA 737-800 From United States of America, joined May 1999, 199 posts, RR: 0 Posted (10 years 2 months 1 week 1 day 2 hours ago) and read 17084 times:
Does anyone know the approximate fuel burn rate at idle and at cruise for any common civil jet engines? Anything like RB211, CF6, CFM56, GE90, etc. would be greatly appriated. If no one knows, does anyone know who I might e-mail at the engine manufacturers for these facts? Thanks for all your help.
Civil engineering isn't about making things perfect...just better.
Doktor From Germany, joined Mar 2006, 29 posts, RR: 0
Reply 1, posted (10 years 2 months 1 week 13 hours ago) and read 17027 times:
Hi! I found something of 2.650-3.000 l/h for the CFM56 in cruise. But normally the rate is given in specific-fuel-consumption, which is calculated with kg/h/kN and data refers to TO --> max thrust (CFM56: 37,5kg/h/kN at 104.5kN). Due to the fact that the thrust depends on so many atmospheric conditions, your question is not that easy to answer...
Phollingsworth From United Kingdom, joined Mar 2004, 825 posts, RR: 4
Reply 9, posted (10 years 1 month 4 weeks 1 day 9 hours ago) and read 16629 times:
A GE90-92B with a DACII combustor burns 0.302 kg/s of fuel. It produces 0.37g of unburned hydrocarbons, 12.35 g of CO, and 5.92 g of NOx per kg of fuel burned at certification idle (7% of TO thrust). These are the certification numbers and an actual engine will probably do worse. The same engine burns 3.515 kg/s of fuel and produces 0.04 g HC, 0.15 g CO, and 55.9 g NOx per kg of fuel at the takeoff thrust of 426.72 kN.