Mason
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Any Winglet Kits In The Works For DC-9 (MD-80/90)?

Wed Mar 16, 2005 10:19 am

With the winglet craze, raked or otherwise, especially on a few 727s and 757s as of late, anyone know if any airlines are interested in kits for the DC-9 series (any variant)? Aesthetics aside, they do seem to be popular with the 737s. Also, anyone besides CO ordered them for their 757s? Thanks.
 
Newark777
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RE: Any Winglet Kits In The Works For DC-9 (MD-80/90)?

Wed Mar 16, 2005 10:21 am

I doubt the DC-9's fly long enough routes to warrant the development of winglets. Just wouldn't be economical. Plus, with the DC-9's aging and starting to be replaced, there is little point in developing winglets for a plane that is going to be gone in the near future.

Harry
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N1120A
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RE: Any Winglet Kits In The Works For DC-9 (MD-80/90)?

Wed Mar 16, 2005 10:22 am

The wings are swept back too far to winglets to be all that successful. As far as the 757 goes, I believe FI has ordered them as well.
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nwafflyer
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RE: Any Winglet Kits In The Works For DC-9 (MD-80/90)?

Wed Mar 16, 2005 10:29 am

what about dc-9's from FNT to Florida? that's a pretty long flight
 
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LN-MOW
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RE: Any Winglet Kits In The Works For DC-9 (MD-80/90)?

Wed Mar 16, 2005 12:03 pm

There is a winglet project available for MD80. Not sure who is behind it, but I know SAS is looking long and hard at it as one option to extend the life of its MD80's.
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Mason
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RE: Any Winglet Kits In The Works For DC-9 (MD-80/90)?

Thu Mar 17, 2005 2:06 am

I know some airlines (AS) had tanks for the -80s long flights to Russia. Not sure how much range this offered. Although no longer produced, the MD-80/90 will be flying for many years to come, for better or worse.
 
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Starlionblue
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RE: Any Winglet Kits In The Works For DC-9 (MD-80/90)?

Thu Mar 17, 2005 2:18 am

Winglets on the 727 are primarily used to make them noise compliant (faster climb).

With all the MD-80s in service, I have no doubt someone is thinking about it. These planes are hardly going out of service and many carriers see long lives ahead for them.
"There are no stupid questions, but there are a lot of inquisitive idiots." - John Ringo
 
flybyguy
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RE: Any Winglet Kits In The Works For DC-9 (MD-80/90)?

Thu Mar 17, 2005 2:29 am

DC-9s are "gas guzzlers" that's a bigger problem than just a simple reduction in drag provided by winglets. It's synonymous with putting a lighter frame on an 1980 Cadillac. Sure you would save the weight and increase fuel economy, but you still have an inefficient engine on the car.
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Starlionblue
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RE: Any Winglet Kits In The Works For DC-9 (MD-80/90)?

Thu Mar 17, 2005 2:51 am

Quoting Flybyguy (Reply 7):
DC-9s are "gas guzzlers" that's a bigger problem than just a simple reduction in drag provided by winglets. It's synonymous with putting a lighter frame on an 1980 Cadillac. Sure you would save the weight and increase fuel economy, but you still have an inefficient engine on the car.

You're quite right, but since the airlines are going to keep them anyway, in particular AA...
"There are no stupid questions, but there are a lot of inquisitive idiots." - John Ringo
 
7e72004
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RE: Any Winglet Kits In The Works For DC-9 (MD-80/90)?

Thu Mar 17, 2005 3:44 am

Hey...is there anyone who can take a northwest DC-9 picture and put some winglets on it so we could all be amused??  drool 
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IanatSTN
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RE: Any Winglet Kits In The Works For DC-9 (MD-80/

Thu Mar 17, 2005 4:01 am

Quoting 7E72004 (Reply 9):
is there anyone who can take a northwest DC-9 picture and put some winglets on it

I agree, anyone with any skill in photoshop willing to give us an insight into what this bird could look like?

Cheers,
Ian.
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NWADC9
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RE: Any Winglet Kits In The Works For DC-9 (MD-80/

Thu Mar 17, 2005 4:05 am


Looks stupid Silly

BTW, yes, it's supposed to be that size. It's not a computer problem or anything.
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AA737-823
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RE: Any Winglet Kits In The Works For DC-9 (MD-80/90)?

Thu Mar 17, 2005 4:58 am

I take offense to the "DC-9s are gas guzzlers comment"!!!
If they were such gas guzzlers, why would NW be so content to keep them?
Granted, they burn more fuel than newer types, but they must not be THAT bad.
And, the MD-80 is said to burn less fuel that the 737-800, by merit of its lighter weight. It won't hold as many people, true.
So, I don't think that one can make a sweeping statement that "DC-9s are gas guzzlers."

As far as winglets, someone pointed out that most of them aren't flying long flights. Well, that's true for the most part. But, Northwest is bringing -9s in to Dallas from Detroit and Memphis, and maybe MSP too. AND American is flying their nearly 400-strong MD-80 fleet on long flights: Dallas to Seattle (about 4 hours), Dallas to DCA, Boston, et cetera. So I think the advantages of winglets would be realized in these applications.
Particularly when we consider the weaknesses of the MD-80 are its wings. The MD-80 is known for having to burn off fuel to before it can climb up to the mid 30s. On a recent flight from California to DFW (also over three hours), our MD-80 cruised at FL290 for an hour before climbing up to FL330, and the captain explained that we had to burn fuel before we could reach our final cruising altitude.
SO- I think winglets would help, and I think American would be a prime customer. Heck, they could be the only customer, and the project would still be worthwhile, with 360 of the of the bloomin' things.
And really, no matter how INefficient the plane may be, if you can save 5% on your fuel burn, that's 5%. Come to think of it, 5% translate to MORE fuel saved on an inefficient plane than on an efficient one:
Let's say the MD-80 burns 3000 pounds per hour.
3000 X .05 = 150 pounds SAVED.
Now let's say the 737-700 burns 2800 pounds per hour.
2800 X .05 = 140 pounds SAVED.

Thoughts? Comments?
Have a good Wednesday.
R
 
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drerx7
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RE: Any Winglet Kits In The Works For DC-9 (MD-80/90)?

Thu Mar 17, 2005 5:06 am

Well, to answer the question as to why Northwest keeps them--because they are paid for. The DC9s are gasaholics-but at this point it is cheaper to keep paid for aircraft than pay lease/finance rates on top of gas; this is a huge part of the reason why NW has been able to stay out of financial trouble like US or UA.
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