Weapon PoH Calculation in 1.13 : Target Speed

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KungPao
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Weapon PoH Calculation in 1.13 : Target Speed

Post by KungPao »

I noticed that in 1.13, The target's speed does not play a role in PoH calculation anymore. Any explanation on why?
0:42:55 - Weapon: AIM-120D AMRAAM P3I.4 #43 is attacking J-10AH Vigorous Dragon with a base PH of 95%. PH adjusted for distance: 86%. J-10AH Vigorous Dragon has nominal agility: 4.9, adjusted for altitude: 4.9. Agility adjusted for proficiency (Regular): 3.92. Aircraft has a weight fraction of 0.61 - Agility adjusted to 2.48. High-deflection impact (no effect on agility). Final agility modifier: -25%. Final PH: 61%. Result: 15 - HIT
this J-10AH was running at 650kt when it was hit.

0:44:35 - Weapon: PL-12 #56 is attacking F/A-18C Hornet with a base PH of 90%. PH adjusted for distance: 79%. F/A-18C Hornet has nominal agility: 4.5, adjusted for altitude: 4.5. Agility adjusted for proficiency (Veteran): 4.5. Aircraft has a weight fraction of 0.53 - Agility adjusted to 3.07. High-deflection impact (no effect on agility). Final agility modifier: -31%. Final PH: 48%. Result: 3 - HIT
The F/A-18C was manually setting at 350kt,30m, Automatic evade was disabled. so it was hit when it is at 350kt. Low speed doesn't suffer any penalty in 1.13?



This is the calculation in 1.12
8:34:44 PM - Weapon: AIM-120D AMRAAM P3I.4 #589 is attacking Lightning #9 (J-10B Vigorous Dragon) with a base PH of 95%. PH adjusted for distance: 91%. PH adjusted for actual target speed (694 kts): 91%. Lightning #9 has nominal agility: 4.9, adjusted for altitude: 4.7. Agility adjusted for proficiency (Regular): 3.76. Aircraft has a weight fraction of 0.47 - Agility adjusted to 2.71. Agility adjusted for rear-oblique impact effect: 2.3. Final agility modifier: -23%. Final PH: 68%. Result: 12 - HIT
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RoryAndersonCDT
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Joined: Mon Jun 15, 2009 11:45 pm

RE: Weapon PoH Calculation in 1.13 : Target Speed

Post by RoryAndersonCDT »

Hi, we intentionally removed the PH bonus for hitting slow targets after significant review of the PH code.

The base PH somewhat assumes a compliant target, for example there is no bonus for hitting a target that is unaware but rather there is the lack of a reduction in PH. PH is decreased in the case of very fast targets.

Also, note in your example from 1.12 the 694kts speed didn't actually increase the PH at all. 91% adjusted for distance and then 91% adjusted for actual target speed.

The reason for this change was due to missiles designed for ballistic missile defense (eg, very fast fast targets) always getting 100% PHs on targets moving 1000kts. Without this bonus they still get very good PHs... just not 100% all the time.



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