CAL's First 737-500 with Winglets!

[Furloughed80]

http://www.airliners.net/uf/view.file?id=536884921&filename=1174502419eX6X8P.jpg

 

[pkober]

It looks like it has three vertical stabs.

I heard we were turning in some our 500's, anyone have any info?

 

[RJAA]

Some 300s will be retired in the near future.

 

[catIIIc]

The plan is 15 300's to be parked next year, but the good news is we are getting 30 new 800 and 900ER's next year to replace them. I also believe that 11 300's and 36 500's will be getting winglets.

 

[pkober]

I'd heard something about an airline in China getting some of our -500's.

It's an airline rumor, so it has to be true.

 

[IXLR8]

How many do these seat?...Dougy Steal-and needs to find a 100 seat replacement for all of the 9's NWA is parking...I thought I'd help him out

 

[gkrangers]

So if winglets increase efficiency and such, why doesn't every airliner have them?

 

[catIIIc]

Because they cost money and not every wing was designed with them in mind.

 

[gkrangers]

So winglets won't necessary help all airliners.

 

[Captain X]

Aerodynamically, I think they would benefit any airplane. Of course there is a cost-to-benefit tradeoff of any modification.

It's my understanding that the installation of the winglets on the 73 Classics will essentially be for "free" (an offer CAL couldn't refuse) b/c they will pay for themselves almost immediately in fuel savings.

 

[gkrangers]

Can someone explain how they work?

 

[catIIIc]

They reduce the amount of induced drag without reducing the amont of lift so the the engines do not have to work as hard to get the same speed.

 

[RSRVWINDSURFR]

Can someone explain how they work?

Sure, wings work like this: High pressure on the bottom of the wing, low pressure on the top-thus creating lift. The high pressure on the bottom of the wing tries to roll to the low pressure on the top of the wing-thus creating a wingtip vortex. Winglets act as a fence-blocking the high pressure from travelling over the wingtip to the low pressure, greatly reducing the wingtip vortex, thus reducing drag.

What can I say, I'm a riddle grad. :0

 

[calfo]

Also, there's a component of lift from the winglet, that acts in the forward direction.

 

[pkober]

What's lift?

 

[Oh-ryan]

What's lift?

It's what a bra does (except for grandma).

 

[RSRVWINDSURFR]

What's lift?

It's that thing you use to get your girlfriend in and out of your custom conversion van--oh wait, I thought this was the regional board-sorry!

 

[gkrangers]

Sure, wings work like this: High pressure on the bottom of the wing, low pressure on the top-thus creating lift. The high pressure on the bottom of the wing tries to roll to the low pressure on the top of the wing-thus creating a wingtip vortex. Winglets act as a fence-blocking the high pressure from travelling over the wingtip to the low pressure, greatly reducing the wingtip vortex, thus reducing drag.

What can I say, I'm a riddle grad. :0

I'm a student and I haven't taken Winglets 101 yet.

 

[RSRVWINDSURFR]

I'm a student and I haven't taken Winglets 101 yet.

That's o.k. Any opportunity to demonstrate my riddleness is appreciated. I would give you a "dumbed down" answer, but I don't know how.

 

[gkrangers]

That's o.k. Any opportunity to demonstrate my riddleness is appreciated. I would give you a "dumbed down" answer, but I don't know how.

Well it didn't need to be dumbed down.

 

[RSRVWINDSURFR]

Sorry, I thought you were being sarcastic-hence my sarcasm.....so many flame baiters out there....

 

[Skyboy722]

Also, there's a component of lift from the winglet, that acts in the forward direction.

Hmmm...Really? I don't think so.

 

[AAflyer]

That's o.k. Any opportunity to demonstrate my riddleness is appreciated. I would give you a "dumbed down" answer, but I don't know how.

WOW, how does your head fit inside that itty bitty cockpit.


AA

 

[Skyboy722]

Hmmm...Really? I don't think so.

Disregard. Misunderstood what you were saying. You were indeed correct. Silly me.

 

[AAflyer]

Hmmm...Really? I don't think so.

I believe calfo is correct, winglets utilize the secondary flow from the lower wing surface to the upper to create lift, they are designed in a way to generate an incriment in lift in the flight direction. They generally will create a reduction in induced drag of around 1-2%.

AAflyer

The above was explained by an aeronaitucal engineer to me.

P.S. Looks like you figured it out, your post must of beat mine to the punch.

 

[Cpt. Underpants]

pkober

Lift is the force that repels the earth. Used extensively in ugly machines, especially helicopters.