Need some help with amraam and locking targets.

[eror85]

Hi all
I need some help / advice.
So, i created a mission to practise locking up targets, and also where i can practise shooting
I put two targets in front of me, they are moving away from me.
I locked the right one in STT, shoot with amraam aaaand my amraam start chasing and hit the left one... why?
I also tried this with dual lock ... same result.
I tried this with f16 and f18... same problem, so im missing something :P
Also, i loaded up the f18 sparrow practise mission in the mission editor, and i changed sparrows to amraams. In the beggining of the mission, i lock up sime targets, shoot... and my amraams act like they have own wills :D ... but i locked the targets... the first shoot is always goes to totally wrong targets.
Amraam 120c btw...

[Troll Norris]

Did you guide them until pitbull?

[Troll Norris]

Can you post somewhere the .trk file or TacView file?

[Troll Norris]

BTW TacView is very good analytic tool. There you can find what causes this behaving.

[eror85]

Ill upload 4 videos that demonstrate my problem. Ill hope you can figure out what causes my issue :)

[Troll Norris]

Video is not the best source, but better than nothing. The best source is TacView file:
https://www.tacview.net/

There you can see what you really locked, what missile's radar locked, e.t.c...

[eror85]

https://youtu.be/rcJW85DZg6A

https://youtu.be/T_20A9yfdDw

https://youtu.be/uD2uuOFyj3g

https://youtu.be/eKiIsaUnp_s

[trn3r]

Woo, that's weird.

So what happens is you are so close to the bandits, that the AMRAAM is immediately in pitbull when it leaves the rails, which you can see by the HUD on the Viper for instance which shows Txx instead of Axx already before you shoot. In pitbull mode the AMRAAM simply picks the closest target with its own radar and follows it til impact.

But I actually have never seen that behaviour before.

[eror85]

Another interesting thing, that when i try to switch to "acm bore" the radar instantly locked to the left target :)
When i close enought, so when the two targets separate each other, than i can lock to the right target.
But as i said, this happened me in the f18's sparrow mission... BUT with sparrow everithing working as intended :D

[Troll Norris]

Sparrow is semi-active radar guided missile. AMRAAM is active radar guided missile. It has its own radar with range around 4NM. So once you are in pitbull "pitbull is point when the missile guides itself with its own radar) the missile is independent on aircraft and locks first target it detects. That's why I wanted TacView file because there it could be clearly visible.

[eror85]

I installed the tacview, i had a recording... i locked to the right target, but the missile chase the left one. I also tried "acm bore" at the begining.

https://drive.google.com/file/d/1_WklTwd2IorFzJgUjZWZgVD8EV_pLPZN/view?usp=sharing

[eror85]

I tried to put these two targets a little farther from each other... and in that case, everything was fine. Hmm...

[eror85]

https://drive.google.com/file/d/1IXMwOeak1CDhbgZCIwbar93E21t5GkNW/view?usp=sharing

Am i shoot in too short range?

[Troll Norris]

I will check tomorow. Today I don't have time.

[eror85]

It seems trn3r has right about it... i was too close to the targets.

[trn3r]

No doubt that the AMRAAM leaves the rails immediately in pitbull. However what I would expect is that the AMRAAM's radar synchronizes with the aircraft's radar before doing so, which it does when you shoot from farther away.

In short: it might be a bug in DCS. I would recommend posting a track file on the DCS forum and see what they say.