fixed internally Aim-9P Field of view too large

[=475FG= Dawger]

The Aim-9P seeker field of view should be 2.5 degrees. It appears to be somewhere in the vicinity of 5.5 degrees, give or take few tenths.

 

 

[Frederf]

Usually AIM-9 seeker is nutated in a particular pattern so the field of regard of the seeker is larger than the seeker instantaneous field of view. Nutating the seeker is usually something the airplane does.

[NineLine]

Is there still an issue here, or we all good now?

[=475FG= Dawger]

On 5/3/2022 at 3:14 PM, NineLine said:

Is there still an issue here, or we all good now?

Yes there is still an issue. The AIM-9P is seeking on targets well outside its nominal field of view, causing the missile to seem to "switch" targets. This is occurring on the F-5 for the guys in our group. We don't really shoot the P from anything else.

It also breaks lock against the dark blue sky for seemingly no reason other than it likes dark blue but that is another issue altogether (maybe)

 

Edited May 9, 2022 by =475FG= Dawger

[BIGNEWY]

please include a short as possible track replay showing it happen

thanks

[=475FG= Dawger]

1 hour ago, BIGNEWY said:

please include a short as possible track replay showing it happen

thanks

That's the tough part. Its pretty hard to get a short track of this as we are seeing in PvP MP but I will try to find/produce one.

Edited May 9, 2022 by =475FG= Dawger

[BIGNEWY]

Ok, thanks we will try to reproduce also 

[=475FG= Dawger]

On 4/28/2022 at 1:58 AM, Frederf said:

Usually AIM-9 seeker is nutated in a particular pattern so the field of regard of the seeker is larger than the seeker instantaneous field of view. Nutating the seeker is usually something the airplane does.

I don't think the AIM-9P is capable of operating as a nutating seeker plus the wider than nominal field of view is apparent when the missile is caged which would be a non-nutating mode in any case. 

[Frederf]

Might depend on the AIM-9P variant (1 2 3 4 5). On F-16s the 9P 4/5 can be cued so it can be nutated. Nutation is a caged function anyway. Which airplane are we talking about here? Aiming reference for AIM-9P, AIM-9P5 non-nutating, and AIM-9P5 nutating are 35, 65, and 100 miliradian diameters respectively for a particular airplane. Those are about 2.0, 3.75, and 5.75 degree diameter circles.

[Zergburger]

On 5/9/2022 at 3:40 AM, =475FG= Dawger said:

it also breaks lock against the dark blue sky for seemingly no reason other than it likes dark blue but that is another issue altogether (maybe)

The AIM-9P (non dash-5 variant) is a rear aspect missile so if you manage to get tone and launch on a contact in AB, and they turn into the missile while cutting burner, there is a decent chance it will drop lock.

[=475FG= Dawger]

6 hours ago, Zergburger said:

The AIM-9P (non dash-5 variant) is a rear aspect missile so if you manage to get tone and launch on a contact in AB, and they turn into the missile while cutting burner, there is a decent chance it will drop lock.

That is not what is happening. The missile is transferring away from the Mig afterburner to friendly aircraft, dark blue sky, plowed fields and cosmic background radiation. A 21 foot burner plume against a dark blue sky should not result in an aspect break of the seeker shot from within the missile's published envelope. 

This is all PvP. The PvE experience is much different. 

[Zergburger]

clearly what "should" happen and what dcs does are not always in alignment. I was just explaining a phenomenon i see a lot in game.

[Маэстро]

Fixed internally

[=475FG= Dawger]

2 hours ago, Маэстро said:

Fixed internally

Thanks!