Daysleeper
Topic Author
Posts: 565
Joined: Sun Dec 20, 2009 3:33 pm

777-300ER, 777-200LR And 777-200F Wing Area

Sat Mar 03, 2012 3:01 pm

I don’t suppose anyone has the number to hand? preferably in square meters.

And my apologies for starting a thread for such a simple question, but every site I have visited (including this one) records it as 427.8 m/2 that I know to be for the base models with a 60.9m span only. No site I have found in the last couple of hours has information for the 64.8m wings fitted to the 200LR, 300ER and 200F frames.


Thanks,

DS
 
jetlife2
Posts: 182
Joined: Sun Jul 09, 2006 11:32 am

RE: 777-300ER, 777-200LR And 777-200F Wing Area

Sat Mar 03, 2012 4:04 pm

Interesting. The EASA Type Certificate Data Sheet reflects the different wingspan but states the area is the same whcih seems unlikely. The FAA TCDS does not quote area. The Boeing public technical description gives dimensions, and even scale drawings, but not area.

PS it is "777F" , officially there is not a "777-200F" even though it s based on the 200LR.
My views are not necessarily the views of the GE Company
 
Daysleeper
Topic Author
Posts: 565
Joined: Sun Dec 20, 2009 3:33 pm

RE: 777-300ER, 777-200LR And 777-200F Wing Area

Sat Mar 03, 2012 6:47 pm

Quoting jetlife2 (Reply 1):
Interesting. The EASA Type Certificate Data Sheet reflects the different wingspan but states the area is the same whcih seems unlikely. The FAA TCDS does not quote area. The Boeing public technical description gives dimensions, and even scale drawings, but not area.

PS it is "777F" , officially there is not a "777-200F" even though it s based on the 200LR.

Hmm, the plot thickens - All I can think of is that they must have reduced the width slightly when they increased the span, as I'd have thought the EASA certificate would be correct.

And thanks for the info on the F  
 
ferpe
Posts: 2651
Joined: Tue Nov 30, 2010 7:44 am

RE: 777-300ER, 777-200LR And 777-200F Wing Area

Sun Mar 04, 2012 7:51 pm

Quoting Daysleeper (Reply 2):
All I can think of is that they must have reduced the width slightly when they increased the span, as I'd have thought the EASA certificate would be correct.

Not really, the swept wingtip is counted as a winglet type of device and these are not counted in the reference wing area, which is 427.8m2 as you wrote. I did actually mesure how much these swept wingtips would add, 7m2. No point in trying to be more accurate as this wingarea is the reference one measured in a special way (look at the Piano X manual to learn about the different definitions there are; Boeing Wimpress, Airbus and so on).

This wingarea then stays the same to be able to compare Cl and Cd values etc between variants.
Non French in France

Who is online

Users browsing this forum: SAAFNAV and 14 guests