investigating Need to re-align JDAM after selecting GUN

[Bankler]

Currently, there is no way to select the A/G gun without having to re-align the JDAMs, unless you're also carrying other A/G weapons (in which case you CAN).

Example 1 (Track 1):

1. Carrying two GBU-38 JDAM only.
2. Align the JDAMs.
3. To select GUN, you need to press the J-38 OSB, which will reset the alignment.
4. You will now have to align the bombs again.

Example 2 (Track 2):

1. Carrying one GBU-38 and one GBU-12.
2. Align the JDAM.
3. To select GUN, first select the GBU-12, then press GUN.
4. You can now go back to the GBU-38 without having to re-align, which is good.
5. Note: When entering gun mode this way, you will get a fixed sight only. I find no way to get CCIP for the gun, without actively de-selecting the JDAM (again, screwing up the alignment). This might also be a bug, possibly.

Some more details here:

 

Hornet_JDAM_Align_Bug.trk Hornet_JDAM_Align_Bug_2.trk

[Minsky]

According to the document that cannot be named due to 1.16, this is "correct as is".

The "GUN" is replaced with the "JDAM DSPLY" button once a JDAM is boxed. Unless you have another weapon in the top row, you have to unbox JDAM to return to the STORES page.

 

[Bankler]

10 hours ago, Minsky said:

According to the document that cannot be named due to 1.16, this is "correct as is".

The "GUN" is replaced with the "JDAM DSPLY" button once a JDAM is boxed. Unless you have another weapon in the top row, you have to unbox JDAM to return to the STORES page.

 

Thanks for the insight! That itself doesn't sound completely unlikely. However, if that is the case, it doesn't sound likely that the JDAM alignment would reset by exiting the JDAM page by pressing the J-82 OSB button, does it? (Maybe that is also covered in your source?)

[Harker]

1 hour ago, Bankler said:

Thanks for the insight! That itself doesn't sound completely unlikely. However, if that is the case, it doesn't sound likely that the JDAM alignment would reset by exiting the JDAM page by pressing the J-82 OSB button, does it? (Maybe that is also covered in your source?)

The same manual also lists this as correct. Explicitly de-selecting an INS guided weapon will remove power and thus the alignment will be lost. You can choose other weapons over it, (have J-82 boxed and then selecting 82LG will switch to the GBU-12. Deselecting 82LG will take you back to having the JDAM selected), but you cannot explicitly deselect it without losing the alignment.

[Bankler]

On 7/30/2022 at 2:34 AM, Harker said:

The same manual also lists this as correct. Explicitly de-selecting an INS guided weapon will remove power and thus the alignment will be lost. You can choose other weapons over it, (have J-82 boxed and then selecting 82LG will switch to the GBU-12. Deselecting 82LG will take you back to having the JDAM selected), but you cannot explicitly deselect it without losing the alignment.

Thanks! That's interesting. I wonder if someting is simply just overlooked in the manual (i.e, you can select gun some other way), or if it's an IRL design flaw. Not a big deal obviously, but still strange.

[maxTRX]

3 hours ago, Bankler said:

Thanks! That's interesting. I wonder if someting is simply just overlooked in the manual (i.e, you can select gun some other way), or if it's an IRL design flaw. Not a big deal obviously, but still strange.

Even more strange...  Say you have JDAM powered up, select Mk82 and box gun. Go back to JDAM and the gun can fire happily w/o any reticle or even a gun cross.

Also, if I () designed this inventory/weapon selection/power up scheme, I'd let the JDAM remain boxed when selecting a dumb bomb. With both of them boxed and the dumb bomb options displayed on DDI, boxing a gun would put gun's CCIP/MAN reticle on HUD. Deselecting a gun would bring back the dumb bomb options on DDI and HUD. The '8*LD' would be boxed again with gun deselected (JDAM remains boxed throughout this entire process). Now, if we decide to go back to JDAM... unbox '8*LD' and it's all good.  Oh well.

[Minsky]

7 hours ago, oldcrusty said:

Say you have JDAM powered up, select Mk82 and box gun. Go back to JDAM and the gun can fire happily w/o any reticle or even a gun cross.

Not exactly. Going back to JDAM unboxes both Mk82 and the gun.

But if you box JDAM, then box Mk82, then box gun, and then unbox Mk82, it goes back to JDAM with the gun still available to fire without any gun-related HUD symbology.

Edited August 1, 2022 by Minsky

[BIGNEWY]

Will investigate, if you have any public evidence please PM me

[Bankler]

On 8/1/2022 at 10:05 AM, BIGNEWY said:

Will investigate, if you have any public evidence please PM me

Thanks! No, sorry, I don't have any evidence nor testimony. My report/thoughts are just based on what "seems" reasonable/consistent and nothing else. Not being able to fire gun without re-aligning unless carrying other weapons can not reasonably be a feature in the real jet, as it makes no sense. But it could arguably be a system flaw that was accepted by the manufacturer. I.e the functionality was allowed to limited/dictated by how the JDAM MFD page looks (all buttons already in use), and no one cared to solve it since they didn't expect a Hornet to need a JDAM within 2 minutes of a strafing run anyway. Sounds a little strange, but not completely unreasonable I guess.