Ooh, split scimitar winglets

"whoarder is tellurium" (whoarder) 09/05/2018 at 08:31 • Filed to: Planelopnik

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Today’s transport to San Diego is a Delta 737-900ER...:

ttyymmnn > whoarder is tellurium 09/05/2018 at 08:43

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Love me some split scimitars...

facw > ttyymmnn 09/05/2018 at 08:45

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United was very aggressive about getting them deployed on their newer 737s.

Chuckybas > whoarder is tellurium 09/05/2018 at 09:12

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WHAT IF....they just said “I meant to do that” when there was some sort of delamination at the wingtip?

Ash78, voting early and often > whoarder is tellurium 09/05/2018 at 09:40

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I hate to be that guy, but I think the 900ER is about the end of their ideas for the 737. It’s like if Porsche just built an air-cooled 911 for 50 years but kept upgrading everything, but basically left the body alone.

Wait, that actually sounds great.

The Singer 737-900ER

JustAnotherG6 > ttyymmnn 09/05/2018 at 10:05

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Edumacate me, what does the split scimitar winglets do that a single scimitar winglet does not?

Highlander-Datsuns are Forever > whoarder is tellurium 09/05/2018 at 10:12

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Get with the program, the up turned life.

ttyymmnn > JustAnotherG6 09/05/2018 at 10:25

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The split scimitar does the same job as any winglet, Sharklet ™ , or wingtip wing fence, which it to reduce wingtip vortices, reduce drag, and increase mileage. You can do the same thing with a raked wingtip like on this 748, but that increases the wingspan. In fact, the latest 777X will have raked  wingtips that fold up at the gate. The Navy’s new P-8 Poseidon, based on the 737-800ERX will have even longer raked wingtips. Almost all of the technological developments currently underway are designed around fuel savings.

ttyymmnn > facw 09/05/2018 at 10:27

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It’s a kit.

JustAnotherG6 > ttyymmnn 09/05/2018 at 10:46

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That’s what I thought but wasn’t sure if there was a perceivable advantage of one over the other.

facw > ttyymmnn 09/05/2018 at 10:46

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My understanding is that traditional wingtips/wing fences are better in dense low altitude air, but are not optimal for cruising, which is why you have the raked wingtips on the wide- bodies, which spend most of their time on long-haul routes, as opposed to the much shorter flights of the narrow- bodies. The P-8 is an exception, because unlike a normal 737 that will normally fly short flights, the P-8 is expected to spend as much time as possible in the air.

ttyymmnn > JustAnotherG6 09/05/2018 at 10:55

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I have read that the split gives a minimal advantage over other winglets, but certainly enough for some airlines to pursue them.

ttyymmnn > facw 09/05/2018 at 10:55

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Good to know. Thanks.

gmporschenut also a fan of hondas > JustAnotherG6 09/05/2018 at 21:30

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the split kit doesn’t require the whole wing to be replaced. Just the tip