bad map file

[orbiter28]

Edit : It is not a bug, but a feature ;)

Bug: The map with the Shift K are not correct.

Can I reproduce it 100%: yes, %

 

How to reproduce/ description:

 

Press Shift + K, look at airport.

You can read batumi airport runway 30 is aligned with 299°.

Go to the dcs chart folder, you can read batumi is at 305°.

Use TACAN aproach, it confirm batumi is at 305°.

 

 

They are some airport like this, not only batumi.

 

 

 

DCS Version: OpenBeta 2.5.6.XXX

Video/ Screenshots:

DCS chart for batumi, see runway 30 for example :

Inboard F-14 map :

Edited February 23, 2020 by orbiter28

[Ramsay]

Press Shift + K, look at airport.

You can read batumi airport runway 30 is aligned with 299°.

This is the Magnetic heading. IRL aeronautic charts are usually marked with respect to magnetic north.

 

Many DCS charts list RWY 30 as 300°M but DCS tends to round numbers down, so 299° is more likely to be the cockpit value i.e. 306°T - 6.1°MV = 299.9°M = 299°M when rounded down.

Go to the dcs chart folder, you can read batumi is at 305°.

This is the True heading in DCS and as measured on the F10 map, MagVar = ~6°

Use TACAN aproach, it confirm batumi is at 305°.

The F-14B is the only module to model the effect of flying East-West (crossing the earth's magnetic field) on the magnetic flux valve (Magnetic Azimuth Detector - MAD), this throws the HSI "off" and you often end up flying with an offset HSI heading as if compensating for a crosswind.

 

https://forums.eagle.ru/showthread.php?p=3912833#post3912833

 

This is likely why you think Batumi's TACAN approach is 305°M

[orbiter28]

Ok, i try with kobulety.

I read 64° on the F-14 inboard map, and 64° in the dcs map.

I should be on 58° for have a well working tacan.

 

 

So i remove 6 for east, and add 6 for west...

Thank.

Edited February 23, 2020 by orbiter28

[Ramsay]

Ok, i try with kobulety.

I read 64° on the F-14 inboard map, and 64° in the dcs map.

64°M is the correct magnetic heading i.e. the bearing you would fly in the A-10C, Hornet, etc.

 

I should be on 58° for have a well working tacan.

 

In DCS, Kobuleti RWY 07 = 70° True, 64° Magnetic

 

The F-14B TACAN course setting should be 64° as you'll be flying the 64°M radial.

 

The HSI may have error due to flying East-West ...

 

• approaching a carrier West-East it's approx. -10°

 

• approaching Kobuleti RWY 07 in 2.5.6.43931 - I only see a small 1-2° HSI error

 

this is likely intended, as HB have modelled the magnetic effect of the carrier and a number of other sources of error.

 

Batumi appears to be similar

 

 

So i remove 6 for east, and add 6 for west...

 

Yes, though + = East and - = West

 

(1) MagVar = True - Magnetic = 70°T - 64°M = E +6°

 

you subtract MagVar from true to get Magnetic, so

 

(2) Magnetic = True - MagVar = True - (+6°) = 70°T - 6° = 64°M

Edited February 24, 2020 by Ramsay
Test F-14B TACAN/HSI, Kobuleti and add Batumi picture