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=dobs=
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Posted: Sun Dec 07, 2014 5:29 pm |
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Joined: Sun Nov 10, 2013 5:08 pm Posts: 750
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60:1 rule
For every 1 degree at 60 miles = 1 mile.
So bombers at 270 radial for 180 miles and fighters at the 250 radial at 180 miles are 60 miles apart. 180 miles divided by 60 =3 miles per degree. 20 degrees x 3=60
Welcome to Tacan Navigation 101:)
Good news is you can get a rough wag just by looking at the screen and where it shows YOU at and then where you want to go.
Remember for intercept you need to lead the point based on your speed vs tgt speed....
In this case if bombers are doing 240GS and you're doing 360GS, you can do some quick math.
I' m doing 6 miles a minute, so 10 minutes to go 60 miles. Bombers are doing 4 miles a minute, so in 10 minutes they will cover 40 miles. So my intercept point should be based on a point 10 miles ahead of the bomber stream, so I head for a point 50 miles in front of the bombers....40+10. Or the 270R for 130 miles....you can do the easy way..lay a straight edge up there connecting the two points and then lay that straight edge on a radial and look at distance, or start doing mor e complex math in your nugget.
So the heading would be roughly 020 for about 70 miles....oops I'm only doing 6 miles a minute, so that is almost 12 minutes, which will put me only 2 miles ahead of the bombers.. <best GPS voice> "Recalculating"!
LOL...head hurt yet? Good GCI would be invaluable:)
Bomber intercept is not easy...oh yeah, and there will be guys trying to stop us from doing our job:)
Cheers!
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