GBU-12 missing lased target

[Sl3dge]

DCS Version: 2.7.0

 

Hi,

I am noticing the GBU-12 laser guided bomb is not tracking to the target as it should be.  I have created a basic mission and have setup MIST/CTLD script by ciribob to do the Auto-Lasing function.  I have tried both Air and Ground based JTAC [Code 1688] and neither seem to guide the weapon in correctly.  I have followed Mudspikes LGB delivery procedure for the Mirage and on initial pass, I can see the steering wings appear when I select Magic Slave/AG designate. However I do not get the CCRP horizontal line or any distance to target info on the HUD.  I then fly out ~15miles, turn around, repeat the process and this time get the CCRP horizontal line cue, however the GBU misses the target.  I did read some posts from awhile ago saying the GBU-12's were bugged, therefore can you confirm this is still the case?

Setup profile

-Fly into target at 10000Ft

-Radar is in EM mode, Radar Alt On and Radar option selected

-Master Mode on and select EL1 with TAS enabled (even tried it with RS).

-Number of bombs to release is set to 01 and fuzing set to INST

-Select CMD FWD and got the diamond on the HUD as expected.

-Pointed aircraft nose at the target on ground (smoking column) and selected Magic Slave/AG designate and observed the steering wings on the diamond

-Pulled back up to 10000ft and flew over target (however never saw CCRP horizontal line cue or ranging information in the HUD).

 

Regards

Edited April 20, 2021 by Sl3dge

[Steph21]

Haven't tried yet on 2.7, but gbu12 were working fine in previous version

Edited April 20, 2021 by Steph21

[Sl3dge]

Just tried it with the 2 different types of 500Lbs and the 1000Lbs GBU and did the same thing, missed target by a long way.  So not sure what it's doing as never played the Mirage prior to 2.7.0.  I have also removed the MIST and CTLD scripts for auto-lase and used the DCS in-game JTAC auto-lase and the weapons are still missing the target. 

Edited April 20, 2021 by Sl3dge

[Steph21]

Ok, just looked at your screenshot, and you're are carrying S530 with your gbu. You can't mix ordnance on the Mirage as fire computer can't handle it. You can have magics + 1 other type of weapon. 

Try with gbu only without S530, should work better

[Sl3dge]

ok, thanks for info, will do

 

EDIT: No good, bombs are still dropping long so unless it's an environmental/cloud issue where it might be masking the laser from the JTAC reaper drone, then I'm not sure.  Might have to do more testing with a vehicle asset and see if I can get it to work.

Edited April 20, 2021 by Sl3dge

[Frederf]

Demo track of GBU-16 delivered by JTAC lasing

M2KjtacLGB.trk

[Sl3dge]

Thought I would update this post for the moderators, as I believe it can be closed.  It appears I was doing a few things wrong when setting up this mission.

 

1. As per Steph21 comments above, don't load the 530 missiles when you are carrying AG ordnance (Thanks for that tip).

2. Have a slight dive angle towards the target to get a successful release of the GBU.

3. If you intend on using a JTAC for lasing targets, minimize the amount of waypoints for the airborne drone (ie./ place unit down and give it a single WP over the target). 

4. When using an airborne drone to lase, set the last WP to "Orbit", as it seems to maintain lock better on the targets below it. NOTE: If you have it in "Race Track mode", it tends to break lock in the turn and thus why the bombs were missing (no laser LOS/no target).

 

Hope this info helps someone else out, as I lost a lot of hair today

Edited April 21, 2021 by Sl3dge

[funkstardeluxe]

deleted comment

Edited April 27, 2021 by funkstardeluxe
false positive, user error