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#3261575 - 04/06/11 12:39 PM Re: Seriously bugged CEM [Re: Biggles07]  
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IvanK Offline
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IvanK  Offline
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I know darkmouse because I have it first hand from the Sim's coders. And many will be flying COD navigating by Heading Time and Airspeed. Variation in 1940 in this part of the Uk was 10 degrees West (the 10W isogonal going pretty much straight through central London) with a mean annual drift of 10.5 seconds Easterly and thats a pretty significant value. On another point any pilot worth his salt can fly a heading +-1degree most real ones do every single day they go to work smile

Last edited by IvanK; 04/06/11 12:44 PM.
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#3261585 - 04/06/11 12:47 PM Re: Seriously bugged CEM [Re: Biggles07]  
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darkmouse Offline
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darkmouse  Offline
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Oh, its perfectly possible to use MDR if you want in IL2, but modelling magnetic variation would be pointless as it only becomes a factor with real flying when you navigate using printed charts - its the difference between Grid North on the Map and Magnetic North as indicated by your compass/HSI. If Variation is 2 degrees West for example, you measure your heading from the Grid Chart, then add 2 degrees to get the magnetic heading that you would have to fly to achieve the same result.

Likewise if you take a bearing off a compass, before plotting it on your Grid Map you would take the magentic variation away from the heading ie. Subtract 2 degrees.

Its pretty pointless modelling it in IL2, and I'd be interested to know how you would figure out if it had been modelled or not.

#3261589 - 04/06/11 12:51 PM Re: Seriously bugged CEM [Re: Biggles07]  
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darkmouse Offline
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darkmouse  Offline
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Ok, IvanK, so its not modelled. But even then, my point still stands, why would it be necessary in the sim when you are not using printed charts to navigate by?

ps. http://334theaglesquadron.com/modules.php?name=Forums&file=viewtopic&t=430

I fly for a living - I can hold a heading, but as far as I'm concerned 2-3 degrees is neither here nor there, especially when leading a pair at low level, maintaining a thorough lookout, ect.

#3262210 - 04/06/11 11:07 PM Re: Seriously bugged CEM [Re: Biggles07]  
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IvanK Offline
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A lot of players use printed charts for navigating in the the sim so if it was modelled it would be relevant. I fly for a living too and have lead many pairs and bigger pushes of fast movers in the weeds at speed dodging the foe ah but a while ago smile

A couple of images of the last big push I lead ... slow movers this time though smile





Last edited by IvanK; 04/06/11 11:39 PM.
#3262250 - 04/06/11 11:48 PM Re: Seriously bugged CEM [Re: Biggles07]  
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darkmouse Offline
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darkmouse  Offline
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Still pointless. yep

Last edited by darkmouse; 04/08/11 10:05 AM.
#3262314 - 04/07/11 01:28 AM Re: Seriously bugged CEM [Re: Biggles07]  
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IvanK Offline
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Getting back to the real magnitude of gyro precession. A great reference is the ITVV DVD "Hurricane R4118 the extraordinary story of a Battle of Britain survivor" .. a restored MKI.

http://www.itvv.com/product/R4118

At the end of the DVD is 10minute segment of a solo display. Throughout the display there is both inset and full screen cockpit views. Most of the instrument panel is clearly visible. As can be seen that throughout and after the display the AH is still quite usable. This confirms the AH precession we are seeing in COD is grossly excessive.

Sadly the DG has been caged throughout the display.

Also noteworthy in the DVD is the bounce or jiggle in the ASI. At worst its about +-5MPH. On a side line there are no Merlin coughs or stutters ... though I guess it might have a later model carby setup.

Edit: just discovered that this airframe is fitted with SU AVT32 carby which I believe is the original type with no anti g devices/restrictors fitted.

Last edited by IvanK; 04/07/11 02:36 AM.
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