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737 nose creases

Posted: Mon Jan 15, 2018 3:38 pm
by putthoff
What is the purpose of the creases on the nose of the 737? Looks like 320 also has something similar but not as pronounced. Thanks!

Re: 737 nose creases

Posted: Mon Jan 15, 2018 4:15 pm
by atlamt
Without a picture it's just a guess but you are probably talking about the lightening diverter strips. The strips give the lightening a path to travel through and limit any damage to the composite radome.

Re: 737 nose creases

Posted: Tue Jan 16, 2018 3:05 am
by Florianopolis
737:


A320:


Do you mean the folds above the corners of the cockpit windows?

Re: 737 nose creases

Posted: Wed Jan 17, 2018 1:37 am
by 77west
I think the lines on the nose cone itself are aerodynamic in nature?

Re: 737 nose creases

Posted: Wed Jan 17, 2018 9:44 am
by KingOrGod
atlamt wrote:
lightening


I think he means lightning...

Re: 737 nose creases

Posted: Wed Jan 17, 2018 9:58 am
by zeke
KingOrGod wrote:
atlamt wrote:
lightening


I think he means lightning...


Lightening protection is the reason why. On the Airbus aircraft, there is a difference between early and late models, the later models have more lightening protection strips on them as the weather radar changed. Early weather radar in Airbus aircraft did not have predictive wind shear, later models do, that required the material in the nose to be changed as the frequency the radar operates at is different.