I see. Thanks, Jim.
Chris
> On 20 Apr 15, at 01:55, Bill Pearce <billcpearce@xxxxxxx> wrote:
>
> It was and may still be common on Cessnas and Beech planes.
>
> -----Original Message----- From: Jim Nichols
> Sent: Sunday, April 19, 2015 4:28 PM
> To: Olympus Camera Discussion
> Subject: Re: [OM] IMG: French Connection
>
> Hi Chris,
>
> Thanks for looking and for your comments. I think your assumption is
> correct. The ribs provide stiffness in a lightweight structure, and, as
> long as the ribs are parallel to the local airflow, the impact on drag
> is minimal.
>
> Both the Beech Bonanza and the Piper Cherokee use similar structural
> elements. Piper did learn, with the early Cherokees, that
> outward-facing ribs were subject to cracking. They eventually reversed
> the ribs, forming dimples in the metal, and eliminated the problems.
>
> Jim Nichols
> Tullahoma, TN USA
>
> On 4/19/2015 1:35 PM, ChrisB wrote:
>> That’s another nice shot, Jim.
>>
>> Why would the metal of the fin be ribbed like that? Is it to stiffen thin
>> metal, kept like that for lightness?
>>
>> Chris
>>
>>> On 19 Apr 2015, at 19:14, Jim Nichols <jhnichols@xxxxxxxxxxxxx> wrote:
>>>
>>> In examining the film from the Bessa, I found an example of our
>>> international aircraft, a S.O.C.A.T.A. MS894A that is based here. I'm sure
>>> that, among the sailplanes based here, there are quite a few more from
>>> overseas.
>>>
>>> http://www.gallery.leica-users.org/v/OldNick/French+Connection-1.jpg.html
>>> <http://www.gallery.leica-users.org/v/OldNick/French+Connection-1.jpg.html>
>>>
>>> Bessa R2a with Kodak BW400CN, lens not recorded.
>
> --
--
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