PPRuNe Forums

PPRuNe Forums (https://www.pprune.org/)
-   Tech Log (https://www.pprune.org/tech-log-15/)
-   -   Split scimitar winglets (https://www.pprune.org/tech-log/584766-split-scimitar-winglets.html)

underfire 22nd Sep 2016 04:22

Split scimitar winglets
 
No idea there were so many split scimitar winglets in operations...

https://www.youtube.com/watch?v=DDGiRAtmMmg

Any drivers have comments on the differences, etc?

ACMS 22nd Sep 2016 04:31

Holy smokes, something you didn't know.

Who would have guessed....:ok:


I guess your surface movement radar didn't pick that one up:}

KenV 23rd Sep 2016 16:26

The nature of winglets being what they are, a pilot is not going to feel the difference. The bean counters paying for fuel would see the difference.

megan 24th Sep 2016 01:29


a pilot is not going to feel the difference
Maybe not, but they do influence limitations, eg crosswind.

Airmann 24th Sep 2016 02:20

Looking at hte scimitar I noticed that the upper winglet actually looks to be the standard 737 winglet while the downward facing one appears to be more or less added on. On installing the scimitar, do they need to remove the entire winglet and add on an entirely new one or simply add on the bottom winglet to the existing winglet?

FlightDetent 24th Sep 2016 07:40

The upper one looks differently, seems to be a completely new kit.

Chesty Morgan 24th Sep 2016 09:49


Originally Posted by KenV (Post 9517939)
The nature of winglets being what they are, a pilot is not going to feel the difference.

This pilot does.

piperpa46 24th Sep 2016 10:43

Scimitar
 
The current APB split scimitar is a modified blended winglet.
When you receive a scimitar winglet you return your old blended winglet which will then get reworked and sold to another customer. This is also reflected in the list price the scimitar upgrade only cost half of what an initial blended winglet installation does.
Program List Prices | Aviation Partners Boeing


The new 737MAX is using a completely different type


I was also surprised to see how many airlines in the USA using them, the only airline I can recall seeing in Europe with them is TUI.

Amadis of Gaul 24th Sep 2016 18:30

The look very scimitarly.

underfire 24th Sep 2016 22:53

Chesty..can you provide some detail?

ACMS, I would expect no less from you.

Mr.Falcon 25th Sep 2016 08:12

I do feel a difference in the flare between no winglets vs blended winglets. An aircraft without winglets sits down nicely, while an aircraft with winglets needs less flare and tends to float a little longer.

Haven't flown yet with the Split scimitar winglets.

misd-agin 25th Sep 2016 12:28

Winglets make the plane feel 'slick' during the descent and on landing.
Airliners were given speed brakes back in the 1960's in anticipation of the slickness of winglets.

ImbracableCrunk 25th Sep 2016 13:42


Originally Posted by Airmann (Post 9518395)
Looking at hte scimitar I noticed that the upper winglet actually looks to be the standard 737 winglet while the downward facing one appears to be more or less added on. On installing the scimitar, do they need to remove the entire winglet and add on an entirely new one or simply add on the bottom winglet to the existing winglet?

Split scimitar winglets are new kit. The wing has an additional stringer added via the fuel tank access points. There are some new counterweights added. The ailerons are given droop of a few degrees. Not all NGs can accept the scimitar.

tdracer 26th Sep 2016 02:36


Not all NGs can accept the scimitar.
Not all NGs can accept winglets - at least not without significant structural modification.
IIRC, the -800 and -900 could accept winglets without structural mod, but the early build -700 needed major structural mods to accept winglets (naturally later build -700s had that added during build.)

nomorecatering 26th Sep 2016 10:50

So which one is the best, most efficient. The design on the Max or the other split schimitar retrofit design. The 2nd certainly looks the best.

Jonno_aus 26th Sep 2016 13:21

Maybe I AM blind?
 
But I don't see any scimitar winglets on Boeing aircraft in that YouTube clip. :confused:

Cool vid though. Madeira airport if I'm not mistaken.

Out Of Trim 26th Sep 2016 14:20

Jonno_aus,

Better book the eye test then! :8

The 2nd & 3rd A/C in the video definitely had them.. :cool:


>---o--0--o---<

Jonno_aus 26th Sep 2016 14:42

Oh yeah. So they do. :8

Serve me right for fast forwarded to the interesting part...the landing.

Or is that 'landing'? :}

underfire 28th Sep 2016 03:00

TUI flies short hops, actually, the split scimitar/winglet is a detriment...(ie the weight/constraints/benefit)

United flies them, just not certain how many ac have been retrofit with them, and/or to any benefit.

triploss 29th Sep 2016 06:30


Originally Posted by underfire (Post 9523141)
TUI flies short hops, actually, the split scimitar/winglet is a detriment...(ie the weight/constraints/benefit)

United flies them, just not certain how many ac have been retrofit with them, and/or to any benefit.

The vast majority uf UA 737's have them, I only very rarely see a normal winglet nowadays. Apparently they were also looking into getting split scimitars for their 757's and 767-300, but the press release regarding those mods was slightly ambiguous.

Interestingly they haven't bothered with winglets on their A32X, but who knows how long those are still going to be around for.

Other US airlines seem to have a mix: WN, AS and DL all seem to have a jumble of winglets and split-scimitars, not sure which variant is dominant.


All times are GMT. The time now is 23:09.


Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.