RE: High Velocity AP round hit-zones

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RE: High Velocity AP round hit-zones

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RE: High Velocity AP round hit-zones - 8/4/2013 8:32:57 PM

Mobius

Posts: 10339
Joined: 6/30/2006
From: California
Status: offline

I'm trying to justify using the average results from the formulas.
Here is from Jane's the accuracy of the T-62's 115mm gun overlaying the formulas curves.
If the target size I chose was PZIV and the ranging error was 27%.
The average curve crosses the Jane's curve in 3 places.

Attachment (1)

(in reply to Yoozername)

Post #: 121

RE: High Velocity AP round hit-zones - 9/10/2013 6:51:56 PM

Mobius

Posts: 10339
Joined: 6/30/2006
From: California
Status: offline

quote:

ORIGINAL: Mobius

quote:

ORIGINAL: Yoozername
Edit:

quote:

mittlere Streuung
(average deviation)
Die mittlere Streuung wird bestimmt durch die Summe der Absolutbetr�ge
der Abweichungen der Stichprobenwerte vom Mittelwert, dividiert durch
den Stichprobenumfang n:

Translate.... mean scatter (Average deviation) The mean dispersion is determined by the sum of the absolute values of the deviations of the sample values from the mean, divided by the sample size.

Wouldn't they be the same as saying 50% are higher and 50% are lower?

It seems you were right at to the meaning.
It doesn't mean 50% deviation like I thought.

Mean Deviation= η
Standard Deviation= σ
Probable Error= γ =0.67449 σ

So σ = 1.25331 η
50% Zone ρ = (2γ) = 1.3489795 σ
Making the substitution you get:
50% Zone ρ = (2γ) = 1.3489795 * 1.25331η =1.69069 η

To translate mean deviation to 50% zone the MD (η) must be multiplied by 1.69.
Where the 122mm DDR document MD at 1000m shows the scatter is 0.3m x 0.3m this is equivalent to a 50% zone of 0.507m x 0.507m.

(in reply to Mobius)

Post #: 122

RE: High Velocity AP round hit-zones - 9/13/2013 4:36:04 AM

Yoozername

Posts: 1121
Joined: 3/4/2006
Status: offline

Perhaps we should work together if there is another product here. I believe I read that Rexford's efforts are still Gospel over at "The Other Game".

(in reply to Mobius)

Post #: 123

RE: High Velocity AP round hit-zones - 9/13/2013 2:51:55 PM

Mobius

Posts: 10339
Joined: 6/30/2006
From: California
Status: offline

quote:

ORIGINAL: Yoozername
Perhaps we should work together if there is another product here. I believe I read that Rexford's efforts are still Gospel over at "The Other Game".

There's not much new to be discovered at "The Other Game". Most new things I found are being posted on World of Tanks blogs. They certainly are bringing a new crowd into tank wargaming. Unfortunately, they aren't very math savy.

(in reply to Yoozername)

Post #: 124