Hi Jim
Yes, that makes sense – the effective wing area is increased, but shaped such
that the pressure underneath is less able to circulate to the top, presumably.
However, that will be of use for all aircraft, not merely high-level cruisers
as Ken was implying.
Chris
> On 17 Feb 2019, at 15:14, Jim Nichols <jhnichols@xxxxxxxxxxxxx> wrote:
>
> 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.
> --
> _________________________________________________________________
> Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
> Archives: http://lists.thomasclausen.net/mailman/private/olympus/
> Themed Olympus Photo Exhibition: http://www.tope.nl/
>
--
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/
|