Advanced technology winglet for b 737 max this

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Advanced TechnologyWingletfor B 737 Max
This graphic fromBoeing shows fromtop to bottom, anon-winglet aircraft,a current blendedwinglet and an ATwinglet. The ATwinglet has a moreeven lift profileacross its span.Boeing claim theywill give 1.5% fuelburn improvementover currenttechnologywinglets
Raked Wingtips – Some NumbersReduces drag by as much as 5.5% (3.5-4.5% fromwinglets)777-300ER and 777-200LR: 6.5 ft. wingtip extensions2% fuel efficiency improvement ($140,000 on fuelcosts per year per airplane)
Boeing 787 Wing
StructureComposite materials in the wing allows the wing to have a higher aspect ratio thanprevious aircraft.Raked wingtips– higher angle of sweep than rest of wing.improve fuel efficiency, climb performance, takeoff length.Better cruise performance than conventional winglets
Is This The Winglet Replacement?The French company Minix (MinimumInduced Drag) has developed a newwing tip device that Mr. ChristianHugues, the patent holder and formeruniversity professor, says not onlyreduces/eliminates wing tip vorticesbut in the process of doing so actuallyproduces thrust.Hugues says that the principle is fairlysimple. It uses the forward part of thedevice to create a Canada effect.This limits or prevents the verticalmovement of the air from spilling over.It is channeled back to the cylinderportion that has a slat in it which drawsin more spill air. All this air is exhaustedat the back of the cylinder and createsthrust. In doing so, the drag reductionis very significant, and performance isgreatly improved, perhaps in doubledigits in terms of percentage.So far there have been preliminarytest on an RV-8 and RV-4 withpromising results. The device itselfweighs approximately 2.5kg perwing for general aviation aircraft.There are two current versions ofthe device. One is for airplanes thatfly at 0.4 Mach or less and the otherfor airplanes that fly up to 0.8Mach. There is a licensingagreement for the device in theUnited States with VX Aerospace foraircraft that weigh 5.7 tons or less.
A device for significant alleviation of vortex andinduced drag
Taper Ratio
Airfoil --Taper Ratio and Sweep AngleTaperis when one or more of the wingsdimensions gradually decrease from theroot to the tip in both thickness and chord.Taper ratio:Sweep angleis when theL.E. of the wing anglesbackward or forward fromthe fuselage.Sweep angleis normallymeasured as the anglebetween theline at 25%chord and a perpendicularto the root chord.
Airfoil TaperRatioTaper ratio- is the ration of the tip chord to the root chord.Thus a rectangular wing has a taper ratio of 0.5When a wing is tapered in planformis compared with a rectangularairfoil with similar aspect ratio then….The CP moves more for changes in A0AThere is greater max Coefficient of liftThere is lower values of drag, especially at low AOAThe L/D ratio is greater throughout the flight range
Mean Aerodynamic chordFor a tapered wing the chordis not uniform across thespan.

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Term
Spring
Professor
Kimberly
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