Any idea why they removed them, I mean with the extra weight, wouldn't they need the improved efficiency from the winglets?
Photo © Erick Lopez
|Quoting Osiris30 (Reply 7):|
Might have been removed for testing purposes?
|Quoting Curmudgeon (Reply 8):|
Also, I wonder how much advantage the winglets would provide at the (I imagine) lower cruise speeds of the LCF?
|Quoting Thepilot (Reply 13):|
Just recently, they were doing a test at BFI w/out winglets and they were 50,000 lbs over landing weight. I guess it is still in the experimental stage.
|Quoting Thepilot (Reply 13):
That plane's wake is a monster!
|Quoting 777MechSys (Reply 15):|
Name 1 heavy lifter that isn't a wake monster. That is why ATC says "Caution wake turbulence."
|Quoting 777MechSys (Reply 21):|
The wings on the LCF sre the same as the 744.
|Quoting 777MechSys (Reply 23):|
Are you talking about the fairings? Painted white (on current LCF) and blends the wing into the body.
|Quoting Sjot (Reply 25):|
The Dreamlifter wings will instead terminate with a standard 747-400 straight cutoff.
|Quoting Beech19 (Reply 28):|
Oh good point... but a 744D doesn't. Wink
|Quoting Sjot (Reply 25):|
Spokeswoman Mary Hanson said Boeing removed the winglets after flight tests showed that in the tradeoff between aerodynamic performance, handling in flight and structural design capability, they were unnecessary.
|Quoting RootsAir (Reply 27):|
Dream lifter is sooo ugly. Long live the Beluga !
|Quoting DEVILFISH (Reply 31):|
Vibration issues have required 747 LCF test flights with winglets removed
"Although details remain scarce, Boeing says the test team is tackling vibration issues that have led to the removal of the winglets from the first Dreamlifter test aircraft (RT876). Flutter tests, provisionally expected to have been completed by now, were still under way as of 7 December."
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