Kompensierscheibe - Compass Swing - on Norwegian airfields

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Kompensierscheibe - Compass Swing - on Norwegian airfields

Post  atckyrre on Sat 7 Nov 2009 - 23:11

Does anyone have knowledge of what kind of Compass Swings you'd find around the German airfields in Norway?
From what I've come to understand the standard type was the ND 12/30 - Navigation Dreiescheibe, 12 meter diameter, 30 ton limit.

I believe the one at Sola See has been unearthed fairly recently. While it's not in great condition, there is no doubt that it's a compass swing - and it does coincide with the position in German maps.
I have seen a pic of a He111 on the Compass Swing at Forus, which seemed like it was the same type.




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Re: Kompensierscheibe - Compass Swing - on Norwegian airfields

Post  Admin on Sun 8 Nov 2009 - 17:53

How did this work? I have seen they have placed aircrafts in the middle of this, but I have always wondered what the purpose was....why did they need to this? Question
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Re: Kompensierscheibe - Compass Swing - on Norwegian airfields

Post  atckyrre on Sun 8 Nov 2009 - 22:10

Admin wrote:How did this work? I have seen they have placed aircrafts in the middle of this, but I have always wondered what the purpose was....why did they need to this? Question
Kurt

The compass swing is a way of adjusting the compass on board (or getting to know how "wrong" the compass on board is) once you've loaded up with weapons and bombs and all that. Different metallic objects would affect the on board compass (and still does today)
Knowing the local magnetic variation you can find out the on board deviation, so you know exactly how your compass is in relation to true North. You write down the deviation in a table, and then you adjust for this number every time you look at the compass for navigation.

It's like if you yourself were outside, holding the compass in a hand with a big watch. The watch would affect the compass. No problem, as long as you know what the reason is.

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Re: Kompensierscheibe - Compass Swing - on Norwegian airfields

Post  tormodch on Sun 15 Nov 2009 - 20:37

Her er en fra Kjevik, utenfor Kristiansand. Denne blir forøvrig snart tatt bort p.ga Avinor vil jevne alle høydekurver rundt rullebanen.


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Re: Kompensierscheibe - Compass Swing - on Norwegian airfields

Post  atckyrre on Thu 19 Nov 2009 - 19:38

tormodch wrote:Her er en fra Kjevik, utenfor Kristiansand. Denne blir forøvrig snart tatt bort p.ga Avinor vil jevne alle høydekurver rundt rullebanen.


Det kan tyde på at dette er en såkalt Kompensierwaage, en enklere utgave. Hvis det er greit for deg så poster jeg bildet ditt på Luftwaffe experten også. Eller så kan du gjøre det sjøl. Men du må vel bli medlem
http://www.luftwaffe-experten.org/forums/

Tråden er her:
http://www.luftwaffe-experten.org/forums/index.php?showtopic=1591

Hvis du poster sjøl må du huske at det bare er lov til å poste link, ikke bilde.

Kyrre

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Re: Kompensierscheibe - Compass Swing - on Norwegian airfields

Post  tormodch on Fri 20 Nov 2009 - 14:09

Ok, tror jeg har brukerkonto der fra før av, skal sjekke det opp, hvis ikke så gir jeg deg beskjed!
Takker for informasjonen!

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Re: Kompensierscheibe - Compass Swing - on Norwegian airfields

Post  AltforNorge on Fri 20 Nov 2009 - 22:23

"Kompensiercheibe" the German word is "Kompensationsscheibe". It is not a compass. It meassures deviation. That is it measures the error induced in compasses by local magnetic fields.
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Re: Kompensierscheibe - Compass Swing - on Norwegian airfields

Post  atckyrre on Sat 21 Nov 2009 - 3:10

AltforNorge wrote:"Kompensiercheibe" the German word is "Kompensationsscheibe". It is not a compass. It meassures deviation. That is it measures the error induced in compasses by local magnetic fields.

Not really. Kompensationsscheibe is not a word in German. And noone ever claimed it was a compass. It's a "Compass Swing".
Here's an explanation in Wikipedia: http://de.wikipedia.org/wiki/Kompensierscheibe

And the error induced from local magnetic fields is called Variation. Compass error from on-board magnetic fields (which, I guess, could also be called "local", in that they are on board the plane) is called Deviation.

Not that it matters. I was just wondering if someone knew what types were placed around Norway.

Kyrre

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Re: Kompensierscheibe - Compass Swing - on Norwegian airfields

Post  AltforNorge on Sat 21 Nov 2009 - 18:12

You are absolutely right. I stand corrected Embarassed
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Re: Kompensierscheibe - Compass Swing - on Norwegian airfields

Post  Rainer on Sun 22 Nov 2009 - 3:06

Hallo,
"Kompensationsscheibe is not a word in German."
It is a word in German.
Gruss
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Re: Kompensierscheibe - Compass Swing - on Norwegian airfields

Post  atckyrre on Sun 22 Nov 2009 - 18:24

Rainer wrote:Hallo,
"Kompensationsscheibe is not a word in German."
It is a word in German.
Gruss
Rainer

Heh. It seems there are more of us that shall have to stand corrected. I must have misspelled the word when checking. In any case I have always thought Kompensierscheibe was the common word. And when googling it turns out Kompensationsscheibe is just as common.

Oh well, you live and learn. Apologies to AltForNorge. Smile

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Re: Kompensierscheibe - Compass Swing - on Norwegian airfields

Post  AltforNorge on Mon 23 Nov 2009 - 0:23

One of the few happy cases where both parties can have right Razz
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