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Old 08-19-2017, 07:21 PM   #1
WildBillKelsoe
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Default harmonised or converged?

to what distance in meters?
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Old 08-20-2017, 01:52 AM   #2
rel4y
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Convergence is at 400m. Starting at ~130m the vertical trajectories of both weapons are roughly the same. (+-10cm)
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Old 08-20-2017, 08:04 AM   #3
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Quote:
Originally Posted by rel4y View Post
Convergence is at 400m. Starting at ~130m the vertical trajectories of both weapons are roughly the same. (+-10cm)
so what youre saying is that bullets will hit the center of the cross at 400 meters, thats roughly a quarter of the 100 mil reticle, for a fighter sized target.
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Old 08-20-2017, 03:00 PM   #4
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Quote:
Originally Posted by WildBillKelsoe View Post
so what youre saying is that bullets will hit the center of the cross at 400 meters, thats roughly a quarter of the 100 mil reticle, for a fighter sized target.
Hi,

yes the convergence is at 400m, but the 400m is the second point where the
30mm and 13mm hit the gunsightline. The first time the 30mm hit the gunsightline is about 125 - 135m. The 13mm should hit the gunsightline the first time at about 25m. Horizontal convergence for 13mm is 600m.

So when a B-17 is 400m away in your gunsight you know the aiming point and for a fighter also at 125m - 135m or even at 200m.

regards

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Old 08-20-2017, 04:14 PM   #5
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Horizontal convergence for MG131 was 400m as well. Not that it makes much difference. The MK108 shells cross the gunsightline first at ~80m. At 130m they are around 30cm above gunsightline, with a max at 250m of 64cm.

http://imgur.com/a/FY8Dd



Last edited by rel4y; 08-20-2017 at 04:53 PM.
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Old 08-21-2017, 04:34 AM   #6
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Quote:
Originally Posted by rel4y View Post
Horizontal convergence for MG131 was 400m as well. Not that it makes much difference. The MK108 shells cross the gunsightline first at ~80m. At 130m they are around 30cm above gunsightline, with a max at 250m of 64cm.

http://imgur.com/a/FY8Dd


Ah thank you. Nice chart and explanation. So in mils that translates to half the first tick above cross at almost full span of fighter sized target, and the first tick at close to half span the same target?

Quote:
Originally Posted by Little_D View Post
Hi,

yes the convergence is at 400m, but the 400m is the second point where the
30mm and 13mm hit the gunsightline. The first time the 30mm hit the gunsightline is about 125 - 135m. The 13mm should hit the gunsightline the first time at about 25m. Horizontal convergence for 13mm is 600m.

So when a B-17 is 400m away in your gunsight you know the aiming point and for a fighter also at 125m - 135m or even at 200m.

regards

Little_D
thanks D.
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Fat T is above, thin T is below. Long T is faster, Short T is slower. Open triangle is AWACS, closed triangle is your own sensors. Double dash is friendly, Single dash is enemy. Circle is friendly. Strobe is jammer. Strobe to dash is under 35 km. HDD is 7 times range key. Radar to 160 km, IRST to 10 km. Stay low, but never slow.
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Old 08-21-2017, 12:09 PM   #7
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I wanted to post this yesterday as well, but somehow forgot as I had trouble with several uploaders.. This should give you a nice overview.

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Old 08-23-2017, 06:07 AM   #8
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Aha so all of them converge at 400 meters? Sorry cant speak German.
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