RAF Manston - Runway orientation and markings

[450Devil]

RAF Manston's runway orientation is marked as 112/292. This is incorrect. The actual orientation on the map is 102/282 Also the runway markings on a number of RAF Biggin Hill's runways are also 10 degrees out. 

Edited September 25, 2021 by 450Devil

[Nealius]

This is interesting, because last I flew the Mossie low and turned onto runway "292" my gyrocompas was indicating 290. After a lot of testing I've found that most of the warbirds are indicating headings 10~20 degrees off. They seem to be matching the runway markings, but they are not matching actual magnetic or true headings. If you put an A-10 on Manston "112" your true heading is 102 just as you say, and the jet's compass/HUD will show about 101 or 102 as well. 

[71st_AH Rob]

What year have you set in the editor? Variation does change each year.

[Nealius]

1 hour ago, 71st_AH Rob said:

What year have you set in the editor? Variation does change each year.

 

2016, which should have declination of less than 1 degree. 

[71st_AH Rob]

I will try to confirm your results when I get home.  This is interesting, I wonder if it is accurate in the 1940's

[gabuzomeu]

There is a historical map for declination , covery 1580 to today’ and the whole world here.https://maps.ngdc.noaa.gov/viewers/historical_declination/

The variations are amazing, 
Let us know how you find dcs is dealing with this, 

 

 

[Northstar98]

I wonder if this is related to DCS' flat Earth model.

[450Devil]

The easy way to check runway orientation is to use the distance / direction tool in the ME. Just run it along the edge of the runway and it will show the orientation. 

[Nealius]

18 hours ago, gabuzomeu said:

There is a historical map for declination , covery 1580 to today’ and the whole world here.https://maps.ngdc.noaa.gov/viewers/historical_declination/

The variations are amazing, 
Let us know how you find dcs is dealing with this, 

 

 

Using the A-10 on other maps, this historical variation is taken into account. I haven’t specifically tested Channel and I’m usually too lazy to change the default mission date. 
 

Channel map is supposed to reflect 1944, and apparently declination for Kent in 44 was -10 degrees. Modern declination is less than 1 degree. That would explain why then runway markings are -10 degrees off. The in-game ruler should be showing true heading not magnetic. 

Edited September 27, 2021 by Nealius

[gabuzomeu]

hello

I did some tests and indeed the declination varies correctly on the map. and markings are 1944 on the map.
However, in testing, it seems the compass repeater is very wrong indicating 126? In Mosquito and P51

Also, interesting points in this discussion, 

with different behaviors of old and new maps and modules…