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Boeing 717 Wing Design?  
User currently offlineb767 From Norway, joined Feb 2008, 127 posts, RR: 0
Posted (1 year 10 months 3 weeks 1 day 21 hours ago) and read 3642 times:

Does the 717 have the old DC9-30 wing with minor modifications or is it only similar in sice,but with the MD80/90 airfoil? How does it compare regarding drag lift ratio with newer designs?

3 replies: All unread, jump to last
 
User currently offlinetdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 80
Reply 1, posted (1 year 10 months 3 weeks 1 day 20 hours ago) and read 3616 times:

Quoting b767 (Thread starter):
Does the 717 have the old DC9-30 wing with minor modifications or is it only similar in sice,but with the MD80/90 airfoil?

I think the MD-80/90 used the same airfoil. They just extended the DC-9 wing with extra sections at the root and tip. It's possible the new sections had a different airfoil but that seems unlikely.

Quoting b767 (Thread starter):
How does it compare regarding drag lift ratio with newer designs?

The wing, by itself, is better that most designs that came after it since it doesn't have any interference from a strut/engine and it's got very small (drop hinge) flap fairings. However, the newest stuff (787/A350/747-8) is better.

Tom.


User currently offlineJetlagged From United Kingdom, joined Jan 2005, 2546 posts, RR: 24
Reply 2, posted (1 year 10 months 3 weeks 1 day 20 hours ago) and read 3611 times:

The 717 wing is basically the DC-9-34 wing design and has the same aerofoil section. The MD-80 and MD-90 also share the same section but have a different planform.

Root aerofoil DSMA-433A/-434A
Tip aerofoil DSMA-435A/-436A

[Edited 2012-10-13 08:48:48]


The glass isn't half empty, or half full, it's twice as big as it needs to be.
User currently offline9VSIO From United Kingdom, joined Dec 2006, 716 posts, RR: 2
Reply 3, posted (1 year 10 months 3 weeks 1 day 17 hours ago) and read 3553 times:
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I couldn't think of anything suitable witty as a response to the thread title...  


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