JDAM no release
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@jc1:
Isn’t the purpose of the training mission #15 to get you to drop the bombs at 60 degrees or less offset from the attack azimuth?
Is that specifically cited in the Training Manual?
I think you can infer it. What was the point of explaining how to set up attack azimuths and pointing out that the attack offset can be no more than 60°?
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@jc1:
I think you can infer it. What was the point of explaining how to set up attack azimuths and pointing out that the attack offset can be no more than 60°?
inference can be the mother of all demise
Perhaps the training material is not the most clear, but you’re doing it wrong. The JDAM cannot maneuver as such like a GPS Glide Bomb. Why fight this so ardently?
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@jc1:
I think you can infer it. What was the point of explaining how to set up attack azimuths and pointing out that the attack offset can be no more than 60°?
inference can be the mother of all demise
Perhaps the training material is not the most clear, but you’re doing it wrong. The JDAM cannot maneuver as such like a GPS Glide Bomb. Why fight this so ardently?
Why not answer my question?
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I finally got around to trying this (TR #15 flying as wingman, with the GBU-31 JDAMs). I set precision steerpoints on the two SA-3 radars…
The first bomb comes off fine. But the second bomb never releases. In this case, the two targets are about 20nm apart – not within the same LAR envelope.
I’ve tried a couple times… cycling master-mode, even switching the JDAMs off and back on again on SMS page, in between targets. No luck.
I’m flying directly at the target, angels 25-30 … no fancy offset, and no impact-azimuth set on the JDAMs.
Anyone else able to release 2x JDAMs in this training mission?
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I finally got around to trying this (TR #15 flying as wingman, with the GBU-31 JDAMs). I set precision steerpoints on the two SA-3 radars…
The first bomb comes off fine. But the second bomb never releases. In this case, the two targets are about 20nm apart – not within the same LAR envelope.
I’ve tried a couple times… cycling master-mode, even switching the JDAMs off and back on again on SMS page, in between targets. No luck.
I’m flying directly at the target, angels 25-30 … no fancy offset, and no impact-azimuth set on the JDAMs.
Anyone else able to release 2x JDAMs in this training mission?
pls switch profile for second jdam release…
if you are using 2 different targets then switch profile before second release… also make sure that second GBU 31 is not in VIS mode. which they normally are after first release.if using both on same target then you may have to lock the tgt again for second GBU
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Switching prof seems to be the workaround… thanks!
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Profiles don’t contain PRE/VIS preference anyway. Also station 3 initializes to profile 1 and station 7 to profile 3. Profile selection is memorized per station so pressing missile step back and forth will change the profile that was selected as the station selection changes. “RDY” shouldn’t even appear on SMS until inside LAR1. These are errors in BMS.
Anyway, getting two sequential releases of JDAM is problematic. Forget multiple targets or multiple profiles or even LAR2. You fly directly at a single target with the default PROF1 and try to drop 1 bomb at 33% inside LAR1 and 66% inside LAR1. First bomb will go but second bomb will not. Try to drop a single bomb 2/3rds inside LAR1, can’t be done. BMS has a problem where it says you’re inside LAR but you’re not.
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Profiles don’t contain PRE/VIS preference anyway. Also station 3 initializes to profile 1 and station 7 to profile 3. Profile selection is memorized per station so pressing missile step back and forth will change the profile that was selected as the station selection changes. “RDY” shouldn’t even appear on SMS until inside LAR1. These are errors in BMS.
Anyway, getting two sequential releases of JDAM is problematic. Forget multiple targets or multiple profiles or even LAR2. You fly directly at a single target with the default PROF1 and try to drop 1 bomb at 33% inside LAR1 and 66% inside LAR1. First bomb will go but second bomb will not. Try to drop a single bomb 2/3rds inside LAR1, can’t be done. BMS has a problem where it says you’re inside LAR but you’re not.
100% agree that there’s a problem with 2nd JDAM releases still in 4.35U2.
1st will release fine, 2nd won’t, even when well inside LAR and on axis. You often have to fly back way outside the LAR and back again to get the 2nd one to come off.
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I’m not even sure if it matters 1st or 2nd. Second release tends to have the problem because second release tends to be deeper in the LAR than the first. Even dropping 1 JDAM doesn’t work if you drop late into LAR. I bet you can drop 2 JDAM serial as long as both drops are attempted early in their respective LAR.
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I don’t know if the LAR only shows aerodynamic range in which the bomb is expected to be able to reach the target from point of release, or if it’s updated based on the bomb settings, but the closer you are to target, the harder it would seem to achieve bomb impact conditions of speed X at angle Y from bearing Z. Especially because most JDAMs have no dedicated surfaces to create drag or effect big direction changes.
As such, wouldn’t the jet simply prohibit release if it calculates that the criteria set through the SMS page are not / no longer attainable?
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There are two LARs, “can get from airplane to target” and “can get from airplane to target given desired end game parameters”. The first LAR fully contains the second LAR. Airplane prohibits release outside of the larger first LAR only. So airplane will allow release that cannot meat LAR2 criteria (impact azimuth, etc.) but can meet LAR1 criteria (will arrive at target at all).
By “airplane” I mean real F-16. In BMS you’ll be inside the LAR1 staple but release is inhibited.