Air to Air, new hit PoH calculation?

[Tcao]

Noticed that the latest update put intercept angle into the missile vs aircraft hit rate final calculation. Usually the intercept angle impacts the missile vs missile situation.

Don't get me wrong, I am not here to complaint the new change. I just feel curious about the reason behind the change

Here is the new poH calculation formula

6/15/1995 12:06:05 PM - Weapon: AIM-120A AMRAAM #22 is attacking Red1 #2 (Su-27S Flanker B) with a base PH of 90%. PH adjusted for weapon speed: 85% (pure-aerodynamic attitude control). Red1 #2 has nominal agility: 4.5, adjusted for altitude: 2.2. Agility adjusted for proficiency (Regular): 1.76. Aircraft has a weight fraction of 0.38 - Agility adjusted to 1.36. High-deflection impact (no effect on agility). Final agility modifier: -14%. Intercept angle is 260 deg - hit probability adjusted to 40%.Final PH: 40%. Result: 24 - HIT

Here is the calculation from pervious version

6/26/2022 12:38:24 PM - Weapon: AIM-120C-7 AMRAAM P3I.3 #102 is attacking Falcon #2 (Su-27S Flanker B) with a base PH of 95%. PH adjusted for weapon speed: 93% (pure-aerodynamic attitude control). Falcon #2 has nominal agility: 4.5, adjusted for altitude: 2.2. Agility adjusted for proficiency (Regular): 1.76. Aircraft has a weight fraction of 0.49 - Agility adjusted to 1.24. High-deflection impact (no effect on agility). Final agility modifier: -12%. Final PH: 81%. Result: 21 - HIT

with the new formula, the hit angle has a significant impact on the final PoH (that does make sense though), on the two cases above , the weapon PoH adjusted after speed is similar, target A/C's final agility modifier is similar. But the new formula halved the final PoH as the Su-27 beam the incoming AMRAAM.

[thewood1]

I could very well be mistaken, but I thought I had seen AoI in weapon calas before. I have no way to validate that though.

edit: I think I am thinking of ABM engagements.

[Tcao]

Also, noticed this new feature

6/15/2022 12:35:15 PM - Weapon: CH-AA-10 Abaddon [PL-15] #35 is attacking Cowboy #2 (F-35A Lightning II) with a base PH of 90%. Cowboy #2 has nominal agility: 4.5, adjusted for altitude: 2.2. Agility adjusted for proficiency (Veteran): 2.2. Aircraft has a weight fraction of 0.2 - Agility adjusted to 1.94. High-deflection impact (no effect on agility). Final agility modifier: -19%. Target signature modifier: -10% (Director [Active Radar Seeker] has tech-gen: Early 2010s). Intercept angle is 265 deg - hit probability adjusted to 32%.Final PH: 32%. Result: 40 - MISS

Target signature modifier, this previously appears in missile vs missile interception engagement. Now it is implemented in missile vs Aircraft too. Which is good, but it will make shooting down stealth fighter much harder.

[Kobu]

Hi

I dont see the target signature modifier. Build 1328.8. I will test more engagement with diferent weapons.


Regards

[Tcao]

Hi

I dont see the target signature modifier. Build 1328.8. I will test more engagement with diferent weapons.


Regards

Tomahawk has a relatively large RCS and AMRAAM C's seeker is rated as late 2000s technology.

you will see that modifier with something different , for example, a SA-11 Buk intercept a HARM

AGM88.jpg (51.87 KiB) Viewed 1524 times

[Kobu]

I would swear that in other versions the tomahawk have this reduction thats why it seemed strange to me, but testing with other weapons it works.


Regards



Edit: reviewing the DB the tomahawk has less RCS than the HARM in the E-M band so its strange that it has not reduction for signature.

Edit2: Ok, doing more testing with an older version of Amraam it has the signature reduction. From what im seeing is a combination from how much stealthy is the target and how old is the seeker in the missile.
In some cases like modern seeker and moderate RCS it has not reduction at all.

[Tcao]

Yes Kobu , U are right.

Looks like the key is the weapon seeker's technology generation.

[wrgmlvr]

PoH = Possibility of Hit?
Can I modify the PoH?

[Dimitris]

PoH = Possibility of Hit?
Can I modify the PoH?

Only if you edit the database, which is supported only in Command PE.