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Re: [OM] IMG: Transportation Images from Today

Subject: Re: [OM] IMG: Transportation Images from Today
From: Jim Nichols <jhnichols@xxxxxxxxxxxxx>
Date: Sun, 17 Feb 2019 09:14:12 -0600
Hi Chris,

Actually, winglets can do both.  They increase the effective aspect ratio of  the wing, making the wing more efficient, as well as reducing the strength of the wingtip vortices, which reduces drag.

Jim Nichols
Tullahoma, TN USA

On 2/17/2019 8:20 AM, Chris Barker wrote:
It is an Aerowest GmbH Citation: https://aviapages.com/aircraft/d-cawx/ 
<https://aviapages.com/aircraft/d-cawx/>

I thought that winglets reduced drag rather than increasing lift – reducing the 
tendency for lift to curl around the wingtip etc . . .

Chris

On 15 Feb 2019, at 21:50, Ken Norton <ken@xxxxxxxxxxx> wrote:

Or, the winglets could be the camel's nose. There was once a time when winglets 
were officially banned from upper management.
All the new ones have winglets now. Even the Falcons come with them,
which is a hoot because Dassault was really proud of their wing design
which used to be as good or better than any other wing WITH winglets.
But just like bulbous noses on the keels of boats, even the best hull
designs can sometimes benefit from protrusions to make them more fuel
efficient.

The Sovereign is a long-distance bird, so the winglets definitely
would be of benefit. The shorter-distance ones really don't need them
because they spend most of their life climbing, descending or below
250 kts and 10k feet. Not hours upon hours in thin air.
--
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