Thanks for those ideas and pictures, Jim. And why was the rudder ribbed? Was
it only for strength, or did it produce its own vortices and increase the
rudder's effectiveness?
Chris
C M I Barker | Gamlingay
> On 15 Jun 2016, at 20:14, Jim Nichols <jhnichols@xxxxxxxxxxxxx> wrote:
>
> Apparently the sky divers' Twin Otter is undergoing maintenance, so they
> brought in a replacement today. This is Serial Number 66, from 1966.
>
> http://www.gallery.leica-users.org/v/OldNick/Another+Twin+Otter.tif.html
>
> The DeHavilland Twin Otter is loved and respected for its abilities and its
> handling. To understand how this was achieved, one must look at the details
> that DeHavilland worked into the design. An example pictured here are the
> vortex generators that energize the airflow in the corner between the fin and
> stabilizer to increase the response of the rudder and elevator.
>
> http://www.gallery.leica-users.org/v/OldNick/Vortex+Generators+on+Twin+Otter.tif.html
>
> Fuji X-E1 and Leica Summaron 35/3.5
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