wardialer
Topic Author
Posts: 1144
Joined: Fri Sep 14, 2001 1:08 pm

Mapping Tool For Calculating Mag And True Headings

Sun Jun 10, 2012 8:07 am

I need an OFFLINE Mapping Tool, meaning WITH NO INTERNET CONNECTION for me to draw a line in order to calculate distance, true heading and magnetic headings and thats it. So for example, I would pick a location in that tool and finding out the coordinates pin mark that anywhere on the globe and then draw a line and find out the heading to any point from that point.

Currently I use Google Earth for this using the RULER feature and then that would draw a line from any point on the globe and that would tell me the distance and the headings.

But I need a tool or a program were I can do the same except WITHOUT internet connection.

There is a way to use Google Earth offline, but its not promising. I read the guide for it too.

Please help. Thx.

[Edited 2012-06-10 02:03:15]
 
wardialer
Topic Author
Posts: 1144
Joined: Fri Sep 14, 2001 1:08 pm

RE: Mapping Tool For Calculating Mag And True Headings

Sun Jun 10, 2012 9:26 am

Never mind....I will use FalconView from www.falconview.org
That has a tool feature which I need.
 
njxc500
Posts: 197
Joined: Mon Dec 24, 2007 6:47 pm

RE: Mapping Tool For Calculating Mag And True Headings

Sun Jun 10, 2012 5:46 pm

When I learned to fly we used a MAP......many people still carry these.
 
timz
Posts: 6163
Joined: Fri Sep 17, 1999 7:43 am

RE: Mapping Tool For Calculating Mag And True Headings

Sun Jun 10, 2012 9:16 pm

What accuracy do you need? If plus or minus 0.5% is good enough you can assume the earth is a sphere and the formulas are fairly simple. If plus/minus 20-30 meters is good enough for distance then Lambert's formula isn't too complicated. And you can probably use the formula for normal-section azimuth-- probably won't differ from geodetic azimuth by more than 0.01 degree, unless your routes are getting close to 20000 km long.
 
ThirtyEcho
Posts: 1409
Joined: Tue Jan 01, 2002 1:21 am

RE: Mapping Tool For Calculating Mag And True Headings

Mon Jun 11, 2012 3:46 am

Try using a chart and a plotter. Works every time, even offline. The only caution is to not leave the plotter on top of the instrument panel on a sunny day.

And a pencil, very important for drawing that line from A to B.
 
SAAFNAV
Posts: 366
Joined: Wed Mar 17, 2010 5:41 pm

RE: Mapping Tool For Calculating Mag And True Headings

Mon Jun 11, 2012 4:31 am

And if you are in a pinch, need to draw a line on the map and have no pen etc, take point A in your mouth, point B in a hand, then use your free hand to fold the map over .

Not the neatest way, but if it's all you have, you do it.

Erich
On-board Direction Consultant
 
nomadd22
Posts: 1566
Joined: Fri Feb 22, 2008 7:42 pm

RE: Mapping Tool For Calculating Mag And True Headings

Mon Jun 11, 2012 12:31 pm

I have a question about something that people get confused about in the maritime world.
They use the word heading when they should be using course. Heading is the way a ship is pointing. Course is the way it's going. Is it the same in the flight universe?
Anon
 
SAAFNAV
Posts: 366
Joined: Wed Mar 17, 2010 5:41 pm

RE: Mapping Tool For Calculating Mag And True Headings

Mon Jun 11, 2012 1:31 pm

Yes,

Heading is where the compass is pointing, Track is the line on the ground made good.
Drift is the difference between heading and track.

Erich
On-board Direction Consultant

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