Any good tutorials on using cluster bombs?
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The CEMs seem a little overpowered against heavy armor. I’ve heard desired bomblet densities which result in pairs of cans being dropped with HOF like 900’ or less. If 4 cans are dropped the overlap is 60% or more. If you do the arithmetic of a T-series tank footprint in square meters times 202 (or 404 or 808) bomblets and what size circle has this area, it’s not a very big radius at all. In fact let’s do it.
A T-72 is 25 m^2. If you want to put one bomblet per that area times 404 (pair drop) it’s 10,000 m^2. The radius of that area is 57m. The setting in a chart I have is you want a 500’ HOF (‘B’ setting) with spin 500 RPM (0-2500 RPM available). That’s super dense and a pair and just hoping for a 1 bomblet per tank area density.
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You also need to figure in ground altitude when setting your burst altitude. If the TGP shows the target at 2,000ft AGL, it’s usually a safe bet to set your burst altitude so something like 4,000 AGL or so (depending on the type of weapon employed).
Cheers, Uwe
The MSL elevation of the target does not matter. The burst altitude is set for AGL only.
Each bomb has a small doppler radar proximity fuse. 4000 ft BA seems extremely high.
Literally off the chart:So if you want the cluster bomb to deploy at 2000 ft AGL, punch in 2000.
FMU-140/B DISPENSER PROXIMITY FUZE
The FMU-140/B (fig. 1-13) has an optional arm
and fire (timer) mode. It is used with the Rockeye II and
Gator weapons. The FMU-140/B is a self-powered
doppler radar device acting as a radar altimeter. Arming
times and functioning altitudes are variable and are
preflight selectable on the fuze faceplate, located on the
side of the fuze. In the proximity mode, if the
preselected altitude is reached before the fuze has had
time to arm, or the dispenser is released below the
pre-selected altitude, the fuze will have the potential to
function anytime after arming. If the fuze has not
functioned by the time it reaches an altitude of 300 ±25
feet, it will function at that time.
Page 1-16 http://www.globalsecurity.org/military/library/policy/navy/nrtc/14313_ch1.pdf -
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That’s a really cool chart, thanks. But is that how it is in the sim? You cannot set spacing longer than 999 right? With a 2000 foot diameter footprint at 3000 BA, this spacing would see each bomb overlap the previous by half. Seems the footprints are smaller. I’ll test it.
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Really? 3000 feet is pretty high. Looks plausible to me:
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Thanks for the CCRP tip but I have two more questions. First is I’ve read that when doing CCRP you should put the radar crosshair into the middle of the column - but I seem to miss too many vehicles in the head of the column that way - so is that true?
And a second one - can release height screw with CCRP? When releasing at 18k I drop 2-3 CBUs and the rest does not go and I have to do another, way less effective pass because everyone is dodging in panic down below. But releasing at 13k seems to drop all 8 reliably
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I drop 2-3 CBUs and the rest does not go
Are you steady and holding the pickle button down the entire time for them all to release?
C9
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altitude screws with the accuracy of CCRP, and if CCRP does not see a good release it will not drop.
if you are very good at CCRP you can use 20k~ as your ceiling, otherwise i drop from 12-18~k feet to ensure releases.
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@Cloud:
Are you steady and holding the pickle button down the entire time for them all to release?
C9
yes, even more so than trembling inside clouds at 13k where I manage to release all bombs
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Thanks for the CCRP tip but I have two more questions. First is I’ve read that when doing CCRP you should put the radar crosshair into the middle of the column - but I seem to miss too many vehicles in the head of the column that way - so is that true?
And a second one - can release height screw with CCRP? When releasing at 18k I drop 2-3 CBUs and the rest does not go and I have to do another, way less effective pass because everyone is dodging in panic down below. But releasing at 13k seems to drop all 8 reliably
In BMS you should aim for center of target for 1, 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12 bombs in ripple. For 2 bombs it will put first on target and second beyond. Why does 2 behave differently than all other combinations? Join me in bugging your local BMS programmer.
HOF should not inhibit CCRP ever for any reason. It certainly won’t interrupt a ripple delivery in the middle of it. Unless I’m completely mistaken the CCRP math is for a single virtual weapon onto the target and 2 or more bombs are done as simple adjustments relative to that release. Book even warns (I think) that just because you get the all clear for frag/SEM/whatever clearance for the stick, it doesn’t protect against that danger for long sticks if you’re descending.
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Really? 3000 feet is pretty high. Looks plausible to me:
What I am saying is that the footprints seem smaller than what your chart says. I have no reason to doubt your info. I think that the footprints in BMS may not match that data. They seem smaller to me.
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What I am saying is that the footprints seem smaller than what your chart says. I have no reason to doubt your info. I think that the footprints in BMS may not match that data. They seem smaller to me.
Test away, I’d love to see the real results. I actually have no idea where that chart comes from haha
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This is my chart (from my own data and tests) from DCS A-10C. It’s another data point in the madness that is figuring out simulated combat airplane stuff.
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This is my chart (from my own data and tests) from DCS A-10C. It’s another data point in the madness that is figuring out simulated combat airplane stuff.
http://i.imgur.com/gBE84ym.gifWrong game I believe there is no spin setting in the F-16, set by the ground crew I assume.
And apparently the older CBU’s did use air pressure to determine when to deploy, so use in mountainous terrain was problematic. But the newer ones all have the radar altimeter and that’s what’s simulated in BMS. -
I’ve always set my BA to 4000 and drop them in at single. So far so good.
My friend managed this in the ITO a few months back.
When used well, they are very disgusting, especially in the desert where its hard to camouflage yourself. -
Had this issue again with CCRP. Flying very steadily at 16k, start releasing CBUs, first 3 drop then release cue suddenly jumps above the FPM and no further bombs get released.
It’s as if they get released slower than they should and I fly out of the calculated release zone, though my speed is ~400 knots so should be fine -
Had this issue again with CCRP. Flying very steadily at 16k, start releasing CBUs, first 3 drop then release cue suddenly jumps above the FPM and no further bombs get released.
It’s as if they get released slower than they should and I fly out of the calculated release zone, though my speed is ~400 knots so should be fineIs your weather homogenous all over the map?
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No, using map model with the weather generated in a weathergen
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No, using map model with the weather generated in a weathergen
You maybe change weather zones on the way?
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Not sure, I certainly don’t see any weather changes while I pickle.
In fact I don’t quite understand what happens. Yesterday I had that issue with FPM jumping up and no further bombs dropped 4 missions in a row and today I did 3 CBU-based missions successfully with all 8 bombs being released. And in both cases the weather was ‘fair’ or so and I was flying completely steady at 16-17k with speed of 350+ knots. Beats me!