Sign in to follow this  
Guest Hugo

How to I mathematically find the magnetic variation

Recommended Posts

I need to be able to mathematically find the magnetic variation based on a lat/long. Does anyone know how to extract the magnetic variation from the FS02 scenery files. ThanksTerry

Share this post


Link to post
Share on other sites
Help AVSIM continue to serve you!
Please donate today!

Hi TerryMag.Var cannot be mathematically calculated.You need to open the bgl files and extract the info from there. I do not know of some tool that will do this, but the structure is fairly easy to understand.Check the fs2k sdk.Cheers George

Share this post


Link to post
Share on other sites

>Hi Terry >Mag.Var cannot be mathematically calculated. I agree with you Terry>>You need to open the bgl files and extract the info from >there. I do not know of some tool that will do this, but the >structure is fairly easy to understand. >Check the fs2k sdk. >>Cheers George If you use FS Navigator, pointing to any airport will give you the local mag. var.In FS itself, if one slews himself the the spot he whishes to determine the variation, and then presses the scace bar, its a/c will sets itself pointing True North (Geographic North). On the heading indicator one can read the corresponding magnetic heading. The difference between this value and 0 or 360 will give the east or west mag var.Hope it helpsHugo

Share this post


Link to post
Share on other sites

>I agree with you Terry Oups! I meant George. SorryHugo

Share this post


Link to post
Share on other sites

Actually, it can be calculated using the latest World Magnetic Model. If you do a search on WMM-95 at the NIMA site, you will find a program (including source code if required) where you can plug in the lat/long, altitude and year and it will calculate the mag var for you. If you can't find it, let me know and I'll email you the ZIP file.Cheers,Danny VickersPS. The US DOD and just about the most of the Aviation Authorities that publish approach plates use this formula from what I have read. I have checked all of the mag var for airports around Australia, and they agree 100% with the publlished values ;-)

Share this post


Link to post
Share on other sites

Well, I wasen't aware of that. One good thing about ignorance is there is always ample empty space to fill in ;-)Thanks for the leed, I'll give it a lookHugo

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this