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joshwagstaff13

24/7/18 [1.79.1.154] FJ-4B Fury: wrong shell types for Mk 12 Cannon

Allow me to prefix this report with the following:

 

While I am well aware this report will likely be filed as an "Already Reported & Solved Issue" - after all, I was the one who filed the original bug report on the issues with how the Mk 12 performed when it first appeared on the 1.79 dev server a little over a month-and-a-half ago (which has since been partially solved) - this is still a rather obvious error that needs resolving.

 

1. Affected Vehicles: North American FJ-4B Fury

 

2. Errors: At the moment, the Mk 12 cannons on the FJ-4B have the following shell types: API-T, HEF-I, and P.

H9fY2gm.jpg

However, while these shells are correct for the AN/M3 20mm that the Mk 12 replaced in US Navy service, they are incorrect for the Mk 12 itself, which should use the following shell types: HE-I, AP-I, and AP-T.

pM8QDxo.png

n0o7wGr.png

Additionally, datamining reveals that the shell velocity is also too low, with a maximum velocity of 853 m/s, as opposed to the 1012 m/s recorded in contemporary US Department of Defense, Defense Intelligence Agency documents.

nNrXXNy.png

 

3. 2018_07_24_14_46_48__19652.clog DxDiag.txt

 

4. Changes Required: In order to recreate the Mk 100-series (20x110mm USN), new shell definitions must be created to suit the HE-I, AP-I, and AP-T shell types. However, I have taken the liberty of compiling new shell definitions using information taken from the following documents. These shell definitions are shown below, for reference.

nNrXXNy.png

P9MQQzB.png

OP3zbtz.png

 

// MK 106 HE-I

bullet{
      mass:r=0.11
      caliber:r=0.02
      speed:r=1012.0
      maxDistance:r=2000.0
      groundCollisionEffect:t="cannon_air_hit"
      groundFxScale:p2=0.7,1.2
      bulletType:t="he_i"
      explosiveType:t="comp_b"
      explosivemass:r=0.007
      hitPowerMult:r=1.0
      onHitChanceMultFire:r=1.5
      effectiveDistance:r=700.0
      relativeVelHitShift:p2=300.0,1000.0
      relativeVelArmorShift:p2=200.0,1000.0
      explodeTreshold:r=0.1
      explodeHitPower:r=16.0
      explodeArmorPower:r=6.0
      explodeRadius:p2=0.058,0.58
      fuseDelayDist:r=0.2
      shutterDamage:b=true
      shutterDamageRadius:r=1.5
      shutterAmount:i=15
      shutterArmorPower:r=6.0
      shutterHit:r=3.0

      hitpower{
        HitPower10m:p2=1.0,50.0
        HitPower1000m:p2=0.79,300.0
        HitPower1500m:p2=0.56,700.0
        HitPower2000m:p2=0.32,1500.0]
      }

      armorpower{
        ArmorPower0m:p2=2.0,10.0
        ArmorPower100m:p2=2.0,100.0
        ArmorPower500m:p2=1.5,500.0
        ArmorPower1000m:p2=1.0,1000.0
        ArmorPower1450m:p2=0.5,1450.0
        ArmorPower1500m:p2=0.0,1500.0]
      }

      visual{
        range_percent_of_ammo:p2=100.0,0.0
        traceFreq:i=1
        tracer:t="noColor"
      }
}
// MK 107 AP-I

bullet{
      mass:r=0.11
      caliber:r=0.02
      speed:r=1012.0
      maxDistance:r=2000.0
      bulletType:t="ap_i"
      onHitChanceMultFire:r=10.0
      effectiveDistance:r=700.0
      relativeVelHitShift:p2=300.0,1000.0
      relativeVelArmorShift:p2=200.0,1000.0

      hitpower{
        HitPower10m:p2=1.0,50.0
        HitPower1000m:p2=0.79,300.0
        HitPower1500m:p2=0.56,700.0
        HitPower2000m:p2=0.32,1500.0
      }

      armorpower{
        ArmorPower0m:p2=36.0,10.0
        ArmorPower100m:p2=33.0,100.0
        ArmorPower500m:p2=27.0,500.0
        ArmorPower1000m:p2=24.0,1000.0
        ArmorPower1500m:p2=19.0,1500.0
        ArmorPower2000m:p2=14.0,2000.0
        ArmorPower2450m:p2=7.0,2450.0
        ArmorPower2500m:p2=0.0,2500.0
      }

      visual{
        range_percent_of_ammo:p2=100.0,0.0
        traceFreq:i=1
        tracer:t="noColor"
      }
}
// MK 108 AP-T

bullet{
          mass:r=0.11
          caliber:r=0.02
          speed:r=1012.0
          maxDistance:r=2000.0
          bulletType:t="ap_t"
          onHitChanceMultFire:r=1.0
          effectiveDistance:r=700.0
          relativeVelHitShift:p2=300.0,1000.0
          relativeVelArmorShift:p2=200.0,1000.0

          hitpower{
            HitPower10m:p2=1.0,50.0
            HitPower1000m:p2=0.79,300.0
            HitPower1500m:p2=0.56,700.0
            HitPower2000m:p2=0.32,1500.0
          }

          armorpower{
            ArmorPower0m:p2=36.0,10.0
            ArmorPower100m:p2=33.0,100.0
            ArmorPower500m:p2=27.0,500.0
            ArmorPower1000m:p2=24.0,1000.0
            ArmorPower1500m:p2=19.0,1500.0
            ArmorPower2000m:p2=14.0,2000.0
            ArmorPower2450m:p2=7.0,2450.0
            ArmorPower2500m:p2=0.0,2500.0
          }

          visual{
            range_percent_of_ammo:p2=100.0,0.0
            traceFreq:i=1
            tracer:t="20mmLightRed"
            trail:t="black"
          }
}

Sources:

http://bulletpicker.com/pdf/DST-1160G-514-81-VOL2, Small Caliber ID Guide (20mm to 40mm).pdf

PYyfIBt.png

 

https://onedrive.live.com/?authkey=!AL6Epr4HhD7Mlgw&cid=AFEBEF1E1631AC21&id=AFEBEF1E1631AC21!30268&parId=root&o=OneUp

73jFHVZ.png

 

https://drive.google.com/file/d/15wqp9QjEUjjyzi5svWYbPs58yajDRbN2/view

Z091bO2.png

 

http://bulletpicker.com/pdf/OP 2215, Navy Gun Type Ammunition (1972).pdf

411mYEn.png

Edited by joshwagstaff13
Re-added shell defintions
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Your Bug Report is submitted.

 

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Thank you for helping us improving the game.

 

Sincerely,

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