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To: CFIIIMEIATP737
"Since I have obviously met someone who knows more about aviation than I do, could you elaborate on your comments in post #26 about how winglets affect noise and obstacle clearance?"

Sure! The wisdom of the 3 second internet search wins against the credential king again.

Source is boeing -- what do they know?

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BLENDED WINGLET PERFORMANCE IMPROVEMENTS

Depending on the airplane, its cargo, the airline's routes, and other factors, blended winglets can:

* Improve takeoff performance and OBSTACLE CLEARANCE, allowing airlines to derate engine thrust.

(Winglets let planes take off from runways in a shorter distance as shown in this boeing chart)



REDUCTION IN EMISSIONS AND COMMUNITY NOISE

At airports that charge landing fees based on an airplane's noise profile, blended winglets can save airlines money every time they land. The noise affected area on takeoff can be reduced by up to 6.5 percent. With requirements pending in many European airports for airplanes to meet Stage 4/Chapter 4 noise limits, the addition of blended winglets may result in lower landing fees if the winglet noise reduction drops the airplane into a lower-charging noise category. The noise reduction offered by blended winglets can also help prevent airport fines for violating monitored noise limits.

http://www.boeing.com/commercial/aeromagazine/articles/qtr_03_09/article_03_1.html
34 posted on 06/13/2016 5:51:51 PM PDT by Mount Athos (A Giant luxury mega-mansion for Gore, a Government Green EcoShack made of poo for you)
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To: Mount Athos

That’s great, Mr. Athos!

Now how about winglets and drag reduction?


35 posted on 06/13/2016 6:10:56 PM PDT by CFIIIMEIATP737
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