Moderators: richierich, ua900, PanAm_DC10, hOMSaR
Increased wingspan means lower induced drag, which benefits both cruise and take-off drag.
MoKa777 wrote:You are zeroing in on an extremely specific answer to a very convoluted math problem with lots of uncertainties. Down to the last few thousands lbs!? Incredibly difficult. Maybe we will get lucky and an A350 dispatcher can help.Post #100 of this thread seems fitting to discuss the new potential improvements to the A350 in the form of revised wingtip devices.
It is being discussed on the A350 Production thread but I believe this thread is a good place to continue discussing the more technical aspects of the change.
https://leehamnews.com/2017/10/25/airbu ... more-25114
It is my understanding that an improvement like this will be most visible on and beneficial for flights that operate at the furthest ends of the aircraft's capabilities.
At the moment, the longest A359 flight is SFO-SIN.
1. I assume SQ uses a 275t standard A359. Correct?
2. How many seats are blocked on this flight?
3. I assume fuel uplift is just over 100t for a flight of this nature and duration. Correct?
4. Now, if SQ uses a standard (not ULR) 280t model, how will things change for this flight?
5. Will fewer, or no, seats need to be blocked?
MoKa777 wrote:6. A 2-3% fuel burn saving could reduce fuel burn on a flight like this by 2-3t! That may seem small but it adds up. It works out to 730-1095t per annum!
trex8 wrote:I dont see it discussed elsewhere but seems A is offering a 210K MTOW weight variant now, so they are spanning 210 to 280K. I assume there is a customer for the 210K otherwise why would they pay money to have it certified??
page 25
http://www.aircraft.airbus.com/fileadmi ... _Oct17.pdf
waly777 wrote:trex8 wrote:I dont see it discussed elsewhere but seems A is offering a 210K MTOW weight variant now, so they are spanning 210 to 280K. I assume there is a customer for the 210K otherwise why would they pay money to have it certified??
page 25
http://www.aircraft.airbus.com/fileadmi ... _Oct17.pdf
This might be the TO for the regional version to compete with the 787-10.
zeke wrote:210 might be for shorter sectors like Sin-Bkk, sin-cgk, sin-Kul. We operate the same A350 airframe with two different MTOWs. Maybe SQ will use 210/250/280.
MoKa777 wrote:http://www.aircraft.airbus.com/support-services/airport-operations/aircraft-characteristics/
The A350 ACAP seems to be missing entirely on the Airbus website... possibly being updated.
MoKa777 wrote:Post #100 of this thread seems fitting to discuss the new potential improvements to the A350 in the form of revised wingtip devices...
zeke wrote:Should also have the A350-1000 nose gear on this updated -900
MoKa777 wrote:Excellent news! This aircraft just keeps getting better!
I look forward to seeing what further improvements and enhancements can be found for -1000.
JerseyFlyer wrote:MoKa777 wrote:Excellent news! This aircraft just keeps getting better!
I look forward to seeing what further improvements and enhancements can be found for -1000.
Presumably most if not all of these improvements for the -900 will be applied to the -1000 also.
WIederling wrote:JerseyFlyer wrote:MoKa777 wrote:Excellent news! This aircraft just keeps getting better!
I look forward to seeing what further improvements and enhancements can be found for -1000.
Presumably most if not all of these improvements for the -900 will be applied to the -1000 also.
Airbus seems to have redesigned/optimized some things on the -1000 that are now backported to the -900.
( CFRP doorframes, electric actuation for gear doors ( sic ) .
Not certain about the ( material mix-) change to fuselage frames ?)
JerseyFlyer wrote:WIederling wrote:JerseyFlyer wrote:
Presumably most if not all of these improvements for the -900 will be applied to the -1000 also.
Airbus seems to have redesigned/optimized some things on the -1000 that are now backported to the -900.
( CFRP doorframes, electric actuation for gear doors ( sic ) .
Not certain about the ( material mix-) change to fuselage frames ?)
I am sure improvements will move in both directions, but this time around I was thinking more about the wing twist and bigger sharklets.