Re: Why no wingtips for B777???

Date:         10 Sep 97 19:38:43 
From: (Philippe Vessaire)
Organization: Ligue de defense des dahus bleus
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  or MIME structure (Luis Manuel Perez Llera) wrote:

>IMHO, winglets are introduced for drag reduction purposes. You have to
>note that they were first developed in the 70s fuel crisis. No doubt they
>have also some effects on the A/C's lateral stability.

Winglets are designed to improve old wings performances. If someone
design a new wing with actual knowledge, it's not necessary to add
winglets. If you see Airbus wingtips, you see only tiny wingtip fences,
very smaler than Mr Withcomb winglets.

Salutations de Paris, France