B737-(NG) Winglet Performance/Fuel Burn
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B737-(NG) Winglet Performance/Fuel Burn
Apparently, Boeing promises a 6% less fuel burn benefit with the new winglets installed on their -NG 737s.
Rumour through the grapevine has it that the gain is more in the region of 3% or even less, as experienced by the new customers.
Can anyone shed any light on this argument, preferably based on actual expereince?
Thanks.
MFALK
Rumour through the grapevine has it that the gain is more in the region of 3% or even less, as experienced by the new customers.
Can anyone shed any light on this argument, preferably based on actual expereince?
Thanks.
MFALK
Join Date: Nov 1999
Location: San Francisco
Age: 66
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From Boeing's Own Website:
http://www.boeing.com/commercial/737...7winglets.html
Benefits
Depending on the airplane, its cargo, the airline's routes and other factors, winglets have the potential to:
* Lower operating costs by reducing block fuel burn by 3.5 to 4.0 percent on missions greater than 1,000 nautical miles
* Reduce engine maintenance costs· Increase range up to 130 nautical miles
* Improve payload capability by up to 6,000 pounds (.5 to 3 metric tons)
* Improve takeoff performance and obstacle clearance
* Increase optimum cruise altitude capability
* Reduce community noise by .5 to .7 EPNdB
(Effective Perceived Noise Level in Decibels) on takeoff and slight improvement on approach
* Lower emissions through lower cruise thrust
From Flight International:
“Boeing adds BBJ winglets”
Flight International 22-28 February 2000
Interim test data from pre-certification airworthiness check flights supplied to Flight International indicate block fuel savings of up to 3.8% on a 5,100km (2,750nm) leg, or 3.6% on a 1,850km flight for the 800. Range increases by 23Okm, or maximum takeoff weight limit rises by 450kg (990lb). Fuel capability limit rises by 2,720kg. Improved hot-and high take-off performance ranges from 1,090kg at Denver at 30°C, to 1,540kg at Mexico City in the same temperature conditions.
From Boeing Aero 17 Article:
http://www.boeing.com/commercial/aeromagazine/aero_17/
Consensus seems to be up to 4%...even from Boeing
GreenArc
http://www.boeing.com/commercial/737...7winglets.html
Benefits
Depending on the airplane, its cargo, the airline's routes and other factors, winglets have the potential to:
* Lower operating costs by reducing block fuel burn by 3.5 to 4.0 percent on missions greater than 1,000 nautical miles
* Reduce engine maintenance costs· Increase range up to 130 nautical miles
* Improve payload capability by up to 6,000 pounds (.5 to 3 metric tons)
* Improve takeoff performance and obstacle clearance
* Increase optimum cruise altitude capability
* Reduce community noise by .5 to .7 EPNdB
(Effective Perceived Noise Level in Decibels) on takeoff and slight improvement on approach
* Lower emissions through lower cruise thrust
From Flight International:
“Boeing adds BBJ winglets”
Flight International 22-28 February 2000
Interim test data from pre-certification airworthiness check flights supplied to Flight International indicate block fuel savings of up to 3.8% on a 5,100km (2,750nm) leg, or 3.6% on a 1,850km flight for the 800. Range increases by 23Okm, or maximum takeoff weight limit rises by 450kg (990lb). Fuel capability limit rises by 2,720kg. Improved hot-and high take-off performance ranges from 1,090kg at Denver at 30°C, to 1,540kg at Mexico City in the same temperature conditions.
From Boeing Aero 17 Article:
http://www.boeing.com/commercial/aeromagazine/aero_17/
Consensus seems to be up to 4%...even from Boeing
GreenArc
