GBU-12's guiding but not exploding.
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I know how to use them, I’ve been using them with great success in the Israeli theater, but I just switched to the Balkans, and now they’re duds, they guide, but no boom.
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My bet on overG.
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I was straight and level, and had not engaged anything at that point, and it was repeatable.
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Arming delay?
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Not sure, I was flying the F-16I in the Israeli theater, and now I’m flying the F-16C Blk 40, do I have to set that myself? I never had to in the F-16I.
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AD won’t affect that. AD just lets you know as the pilot when you’re too low for the bomb to fuse and/or lase correctly.
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Yes, AD will affect…and you’ve pretty much summed up why - the AD has to be shorter than the time of fall…otherwise the bomb will DUD. ROT - the longer the AD, the higher you have to drop.
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Yes, AD will affect…and you’ve pretty much summed up why - the AD has to be shorter than the time of fall…otherwise the bomb will DUD. ROT - the longer the AD, the higher you have to drop.
And what I’m saying is that setting AD has zero effect. I could be at 30k and not set AD and it will work correctly.
And if it does affect it in BMS then it’s not modeled correctly.
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And what I’m saying is that setting AD has zero effect. I could be at 30k and not set AD and it will work correctly.
And if it does affect it in BMS then it’s not modeled correctly.
…if Arm Delay doesn’t affect DUDing, then it is NOT modeled correctly. If you’re at 500’ AGL and set a 10 sec delay, you ARE going to get a dud…unless you climb to an altitude where the TOF is > 10 sec before you release. Also, chances are that id you haven’t set an AD, then you haven’t programmed the fuse completely/correctly…and you will likely get a dud. IF BMS has it “right”…
May the bridges I burn light the way
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I know how to use them, I’ve been using them with great success in the Israeli theater, but I just switched to the Balkans, and now they’re duds, they guide, but no boom.
Where you waiting to see an explosion within the TGP page ? The LGB could have lost track and exploded elsewhere.
To figure out whets going, on, I would advise you to use the ACMI and review if your LGB is tracking correctly and also use the eternal weapons view to confirm if your LGB is a dud or not.
You can easily check if the arming delay is causing the fuss by observing if the fuse arming LOW mnemonic is adjacent to the FPM at the time of release.
If your LG is tracking but not exploding , you probably have a faultily fuse due to over G. -
…if Arm Delay doesn’t affect DUDing, then it is NOT modeled correctly. If you’re at 500’ AGL and set a 10 sec delay, you ARE going to get a dud…unless you climb to an altitude where the TOF is > 10 sec before you release. Also, chances are that id you haven’t set an AD, then you haven’t programmed the fuse completely/correctly…and you will likely get a dud. IF BMS has it “right”…
AD is not modelled correctly. In addition to PUAC / fuse arming cue, which works correctly, AD will physically alter the fuse settings as.
Ideally, fuse setting/arming should be set in the munitions UI, not via the AG Control page.
The AD settings in the AG control page should only affect the HUD PUAC/ fuse arming cue and the the actual fuse. -
…if Arm Delay doesn’t affect DUDing, then it is NOT modeled correctly. If you’re at 500’ AGL and set a 10 sec delay, you ARE going to get a dud…unless you climb to an altitude where the TOF is > 10 sec before you release. Also, chances are that id you haven’t set an AD, then you haven’t programmed the fuse completely/correctly…and you will likely get a dud. IF BMS has it “right”…
Arguing/debating a subject related to the F-16 with a real world F-16 pilot?
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It’s also kinda weird that if you have a nose fuze at 4s and a tail at 6s and you select NSTL it duds <6s TOF. If the front half of the bomb explodes the rear half tends to cave into peer pressure. Anyway whatever is shown on the SMS page is a perfect prediction of AD.
The possibilities to rule out are:
1. Bomb did explode but was not observed.
2. TOF was less than AD.
3. Fuze was damaged.
4. Fuze was not set.In the case of GBU-12 is the nose fuze required for guidance and rear fuze for detonation?
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AD will affect in BMS because we have a compromise. Since we cannot set the AD of the bomb outside (in the loadout screen for example) the code allow you to change it from the SMS, like a SMART RACK.
It’s not a bug, just a compromise. -
Stevie,
Just like I suspected and pointed out; BMS is not modeled correctly (but you know more I guess…). What you’re talking about is available on JDAMs only with a smart rack like a BRU-57 or BRU-61. With LGBs you’ll use the FMU-152 as well (and the -139) but these fuse settings are set on the ground usually via maintenance. Nothing in the SMS affects these bombs. Setting the AD only affects the PUAC and symbology as Leech lead on to.
Now, tell me what we set for AD for a GBU-12 with the newer seeker and then explain to me why… since you seem to know all about the GBU-12.
To the OP, sorry. But it appears you have to set an accurate AD for the bomb to work correctly. Realistically you’ll set 12 seconds for this. If you are not getting the LOW mnemonic in the HUD then the fuse will work correctly (again, this isn’t how it normally works).
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A GBU-12 should typically use a tail fuse, and depending on how it is rigged (or fuse type) there could be selectable AD times - 0, “short”, and/or “long”…again, depending on if the weapon is rigged as selectable for a mechanical fuse; interfaced for an E-fuse. Also - for a mech fuse rigged as selectable (or hard delayed), the crew needs to know from the ordnanceman which AD(s) the weapon is set for, and then select that in the cockpit so that the symbology matches the reality. If the crew selects the wrong AD he will get an early or late DUD cue…which again, is dependent on the release altitude - and fly the wrong profile.
So…there are/can be a number of ways a pilot can screw this up - no fuse selection, wrong fuse selection, wrong/mismatched AD selection, improper release parameters. At least, that’s the RL sitch; the seeker doesn’t matter…the fuse type does. So the real question is - what does BMS do with fusing? But I concur - you should have to set a proper/appropriate AD - AND fly an appropriate release profile - to get the weapon to function properly.
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Ive put occasional (rare) spells of failure to explode down to connection issues. Happens with various free-fall bombs and I’ve been extra careful in following flights that day to ensure I make no mistakes but if its
one of those dayson the mp server then same happens. Is this even possible ? Stock Korea. -
Where you waiting to see an explosion within the TGP page ? The LGB could have lost track and exploded elsewhere.
To figure out whets going, on, I would advise you to use the ACMI and review if your LGB is tracking correctly and also use the eternal weapons view to confirm if your LGB is a dud or not.
You can easily check if the arming delay is causing the fuss by observing if the fuse arming LOW mnemonic is adjacent to the FPM at the time of release.
If your LG is tracking but not exploding , you probably have a faultily fuse due to over G.I watched it on external view hit, and I had no warnings of an over-g, as I said, I was a bomb truck, no a-a happened, no dodging sams, nothing, simply took off, flew to were I needed to be, and dropped, I don’t see how that could cause an over-g, 747’s probably pull more g than I did….
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Did you make a another flight since? If not, please send me your DTC Fault log.
