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Old 11-24-2008, 01:38 AM   #1
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FW-190 D9

Hello,
I'm doing a report for my aircraft structures class on the FW-190 d9. I'm specifically analyzing the wing structure. I seem to be missing some information however. I've found Soren's post quite a while back to be quite useful (comparing the 190 to a p-51), but i need the root and tip chords of the wings, as well as the wing sweep at the quarter chord. Also, the locations of the mounted machine guns along the span of the wing would be useful in load calculations. Basically i'll need information to construct a rough V-n diagram (so I'll also need max and min load factors).

If you guys have this information it would be incredibly helpful. And also if anyone is interested in a dogfight i frequent il-2 on hyperlobby as courtjester140

Thanks!!!


EDIT:
Considering the seemingly unavailability of information regarding this plane, I've decided to combine information about both this plane and the A-8 version (of which more information is readily available). Since the wing geometries are pretty much identical, the numbers should end up being pretty similar for either aircraft. Normally I wouldn't do something as stupid as this, but my professor says that its alright considering the lack of information I have, and that the process of analyzing what I know is more important.

once again, thanks!

Last edited by courtjester140; 11-24-2008 at 02:55 AM. Reason: feeling a bit helpless?
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Old 11-24-2008, 02:32 PM   #2
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What school are you taking this class through?
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Old 11-24-2008, 04:27 PM   #3
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Clarkson University in Potsdam, NY.
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Old 11-24-2008, 04:34 PM   #4
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Cool what degree are you working on?

I am taking classes through Embry Riddle right now for a B.S. in Aviation Maint. Management. They gave me half the credits already because I have an A&P.
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Old 11-24-2008, 04:48 PM   #5
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suggest purchasing some books for your research like most of us have. JaPo and Eagle Editions have volumes covering the D-9 including Schiffer pubs on the east coast

do a book search on google
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Old 11-24-2008, 04:59 PM   #6
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Hi Courtjester,

>I've decided to combine information about both this plane and the A-8 version (of which more information is readily available). Since the wing geometries are pretty much identical, the numbers should end up being pretty similar for either aircraft. Normally I wouldn't do something as stupid as this, but my professor says that its alright considering the lack of information I have, and that the process of analyzing what I know is more important.

Hm, as far as I know, the wings were actually identical, so it doesn't seem even remotely stupid to me to substitute one for the other ...

If you feel like it, please post your results here - I imagine that would be quite interesting for the Focke-Wulf fans on this forum!

Regards,

Henning (HoHun)
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Old 11-24-2008, 06:11 PM   #7
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I'm studying Aeronautical Engineering here. I actually almost went to embry riddle in arizona, but decided i like cold weather over hot weather, so here i am

as far as books, as a typical college student I have absolutely no money. Our library had several editions of "Jane's All the World's Aircraft" but none of them from WWII era included anything german (americans being babies about Germany starting a war and excluding them?)

But anyway, I'll be sure to post my results here when I finish the report.
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Old 11-24-2008, 06:43 PM   #8
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Maybe some of this will help. From the book History of German aviation Kurt tank Focke Wulfs designer and test pilot by Wolfgang Wagner
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File Type: pdf fw-190d.pdf (251.9 KB, 6 views)
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Old 11-24-2008, 06:59 PM   #9
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Best Ive found of a scale drawing of a F-190D. This one from the book Yellow 10, Fw-190D-13 by eagle files publishing.
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Old 11-24-2008, 07:20 PM   #10
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Well, the only data that is important that I am missing is the maximum and minimum loading factors as well as the maximum dynamic pressure. What I will most likely end up doing is taking values of those from a similarly sized WWII warbird such as an ME109, or a P-51, or a spitfire. The accuracy of this report will be diminished but not by much, I'll be sure to make note of the sources of all numerical constants somewhere in the report.
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Old 11-24-2008, 07:36 PM   #11
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Hi Courtjester,

>Well, the only data that is important that I am missing is the maximum and minimum loading factors as well as the maximum dynamic pressure.

I have a translated Focke-Wulf data sheet here that reads:

"Structural strength: For Fw 190A-8/R2 on fighter operations, at G = 4450 kg, safe 'G' factor nA = 6,0"

"On fighter-bomber operations, at G = 4775 kg, nA = 5,5"

nA obviously is the German "sicheres Abfanglastvielfaches" ('safe pull-out load multiple'), but unfortunately I don't know the exact definition of this regarding safety factor, possible asymmetric loading and influence of airspeed (which I suspect, from some figures I've seen).

The translated manual that is the source of the data sheet can be downloaded here:

Focke Wulf Fw-190

The data sheet is on page 114 according to Acrobat Reader's count.

Regards,

Henning (HoHun)
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Old 11-26-2008, 05:09 PM   #12
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Quote:
Originally Posted by HoHun View Post
Hi Courtjester,

>

The translated manual that is the source of the data sheet can be downloaded here:

Focke Wulf Fw-190

The data sheet is on page 114 according to Acrobat Reader's count.

Regards,

Henning (HoHun)

that was an amazing read. Where did you find it?
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Old 11-26-2008, 05:40 PM   #13
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Hi Courtjester,

>that was an amazing read. Where did you find it?

I sense a misunderstanding ... I found it on the site I referenced

The site is run by a fellow forum member, Ron Handgraaf, who has a great collection of manuals which he generously shares with us.

No idea where he finds them, but I'm very glad he does!

Regards,

Henning (HoHun)
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Old 11-26-2008, 09:45 PM   #14
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Quote:
Originally Posted by HoHun View Post
Hi Courtjester,

>that was an amazing read. Where did you find it?

I sense a misunderstanding ... I found it on the site I referenced

The site is run by a fellow forum member, Ron Handgraaf, who has a great collection of manuals which he generously shares with us.

No idea where he finds them, but I'm very glad he does!

Regards,

Henning (HoHun)
Ah, i meant where did you find the website, poor choice of wording on my behalf. The loading factors are extremely useful. For this report however I will use the highest value given, for a worst case scenario sort of thing. Everything will be maximum. I'm writing the introduction for this report now, so once its completed (hopefully by the end of the night, of course for me the end of the night is around 2 am ), i will post it in this thread. Feel free to rip it to shreads.
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Old 12-04-2008, 03:57 PM   #15
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I apologize for the long wait. I haven't had much time to work on this since thanksgiving . I've basically got a rough introduction finished, and a little sneak peak of the next section, which will include force calculations along the wingspan. And a question, should I include something about Kurt Tank in the introduction? He seems worth mentioning.

EDIT: sorry about that thing that says "the packet" in bold, i couldn't find the packet where i got that information from, so i couldn't properly cite it, thats why i left it bold so that i could go back and fix it. its from an aerodynamics book.
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File Type: jpg report1.JPG (175.2 KB, 21 views)
File Type: jpg report2.JPG (90.2 KB, 22 views)
File Type: jpg report3.JPG (47.2 KB, 21 views)

Last edited by courtjester140; 12-04-2008 at 04:42 PM.
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