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Differences Between 737-700 And 737-800 Wings

CM767 From Panama, joined Dec 2004, 639 posts, RR: 1
Posted (7 years 3 months 3 weeks 2 days 4 hours ago) and read 9151 times:

With the Launch of the 737-700ER I began to dig on info on the 737 series and accepted that there are two wings for the NG family, until now I have noticed that in the specifications on the Boeing site all models have the same wingspan.

Could some one please point out what are the differences between the wings of the 700 and 800.

Thanks a lot.

But The Best Thing God Has Created Is A New Day

5 replies: All unread, jump to last

DfwRevolution From , joined Dec 1969, posts, RR:
Reply 1, posted (7 years 3 months 3 weeks 2 days 4 hours ago) and read 9151 times:

Quoting CM767 (Thread starter):
Could some one please point out what are the differences between the wings of the 700 and 800.

The differences are not related to wingspan, profile, etc, but to the wing structure.

The 738 has additional reinforcements to strenghten the wing for lifting higher gross weights. The 73G does not need this extra weight, so two relativly common wings are produced. The BBJ and now 737-700ER apply the -800 wing reinforcement on the -700 fuselage.

It's possible we may see an even stronger "third" wing for the 737NG. The wing reinforcements applied to the 737-900ER and 737-MMA could be incorperated to the 738, the so-called "737-800ERX."

HAWK21M From India, joined Jan 2001, 31201 posts, RR: 58
Reply 2, posted (7 years 3 months 3 weeks 1 day 18 hours ago) and read 9051 times:

Quoting DfwRevolution (Reply 1):
The 738 has additional reinforcements to strenghten the wing for lifting higher gross weights.

Any details on where the Reinforcements were added on the Wing.

regds
MEL

Think of the brighter side!

CM767 From Panama, joined Dec 2004, 639 posts, RR: 1
Reply 3, posted (7 years 3 months 3 weeks 1 day 13 hours ago) and read 9023 times:

Thanks for the reply DfwRewevolution.

I believe that the ER, even that is not revolutionary since really is just is a BBJ, will serve well airlines that max out the 700 in terms of payload.

But The Best Thing God Has Created Is A New Day

Sinlock From United States of America, joined Dec 2000, 1532 posts, RR: 3
Reply 4, posted (7 years 3 months 3 weeks 1 day 12 hours ago) and read 9007 times:

Quoting HAWK21M (Reply 2):
Any details on where the Reinforcements were added on the Wing

I'd venture a guess that the "Reinforcement" is done through using thicker gauge metal during the build up of the wing, rather than the use of doublers or extensive use of extra structure. That would give added strength without as much weight or loss of internal volume. Keep in mind this is only a guess.

My Country can beat up your Country....

Poitin From , joined Dec 1969, posts, RR:
Reply 5, posted (7 years 3 months 3 weeks 10 hours ago) and read 8881 times:

Isn't the skin thickness more on the -800? I read that somewhere, but no reference.

Quoting Sinlock (Reply 4):
I'd venture a guess that the "Reinforcement" is done through using thicker gauge metal during the build up of the wing, rather than the use of doublers or extensive use of extra structure. That would give added strength without as much weight or loss of internal volume. Keep in mind this is only a guess.

I read somewhere the skins are slightly thicker, but I have no reference for that.

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