Hi,

For people that fly, view North America in 3D.

It looks very impressive. But for those of use who don't fly, can you tell us what we are seeing!

Hi,

My guess is it's best viewed at an angle. Does it show Airspace restrictions? It does indeed look very impressive, but I wouldn't mind a bit more explaining too. I often see them fly though

Rob

Wow, I that's pretty impressive!

I'm in Canada, so I'm not sure how it works exactly in the US, but effectly the system are the same. You're looking at Class B and C Control Zones and Terminal Control Areas, Prohibited, and Restriced airspace in the United States. Control Zones are the inner white circles, usually extending between 5 and 10 miles from the airport, and exist to control air traffic in the immidiate vincinity of the airport. Control Areas are the numerous outer white circles and polygons, and exist to control departing and arriving aircraft around the airport. It's layered like and inverted wedding cake; if you zoom down to ground level and look up at the airspace over say Kansas City, you'll see the control zone in the middle touching the ground, and the control area floating all around. Restricted airspace and Prohibited airspace should be easy to figure out (Area 51 for example).

This isn't nearly a complete map as Class D, and E control zones and air routes are not shown. By the way, airspace classes are defined by how much control there is. Class A (all high altitude controlled airspace, 18000ft to 60000ft Mean Sea Level) is the most controlled, and Class G is uncontrolled (all the airspace that hasn't been previously covered). In Canada there is Class F (adviory and restricted airspace) also known as f*** off airspace, however the US doesn't use the Class F designation. It's all restricted, prohibited, etc. airspace anyway.

That's as best as I can simplify it.

Cheers!

Airspace is like motorways in the sky and as 3D.

Airspace is classified in Classes as :-
A, B, C, D, E, F & G

Each class has a specific rule associated with it.
E.g. Class A: All operations must be conducted under Instrument Flight Rules (IFR) and are subject to Air Traffic Control (ATC) clearances and instructions. ATC separation is provided to all aircraft.

Other airspace:-

Danager areas
Prohibited areas
Restricted areas
Military areas

For more information on airspace see:- http://en.wikipedia.org/wiki/Airspace_classes

Now that is alot of work, i see why he didnt include E&D airspaces.

E Airspace just includes basically everything from 1,200 ft agl to 18,000 ft msl that is not B,C, or D. So if it is not colored it is E.

And don't even ask about G, which is the stuff close to the ground... below 1,200 ft agl. Yes I know there are a few areas where G can go up to 14,500 ft msl. Just not inportant here.


F does not exist in the U.S.

I am pretty sure the reason for this restricted airspace involves the fact that this is an active live fire range for the U.S. Army. When I was stationed here training cadets in 2001, we fired 105mm artillery from this general location to a specified impact area two kilometers away. Hate to try to fly through that!!!

This is my first post here guys so please, be gentle.

Mr. Bailey:

How do you create your polygons from DAFIF? Do you have a script that coverts the DAFIF coordinates to XML format?

Thank you, in advance.

RT

GREAT File.
I'm working on one that will incorporate flights and NAVAIDS and other goodies. It'll be a while