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Old 06-06-2007, 01:52   #1
KSC
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Unwritten artillery rocket spec

Lately, my unit has been trying to identify POO sites for the rocket attacks that have been occasionally occuring in my AO. Through crater analysis we've determined the direction and have ruled out the possibility of mortars. So to my question, can anyone give me a guesstimation as to the max range of a 107mm rocket fired without a tube? I can't find any specs as to the range or characteristics of a rocket fired without the tube, I'm willing bet there was no militry testing done in this fashion. Also, there is a tool I've seen several times which is placed against the side of a mortar tube or rocket to measure it's quadrant, or angle- like a gunners quadrant as they are called in the artillery world. The one I am reffering to gives you a reading, and doesn't have a micrometer and bubbles. Anyone know what this is called?
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Old 06-06-2007, 02:42   #2
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Im thinking What your discribing sounds like a Katyusha rocket they have a range between 5-20Km depending on the size. Iraq had lots of them and they are a favorite of Hezbollah also.

How many are hitting or fired at a time ?
If it one or two most likely they have the frame of the launcher hid and they drive up with a few in the back of a pickup truck. launch and leave.
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Old 06-06-2007, 03:23   #3
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Yes, we're almost positive that they are 107mm Katyusha rockets, since that's the only type of rocket artillery we've descovered in the area. I was wondering whether or not the range would be effected by not being luanched from a tube. Since they've originated from remote areas and AWTs and SWTs have been unable to find any type of luanch platform in the area shortly after the attacks, I've been playing with the idea that they've been fired from a few wadis and had probably been propped up on rocks or the sides of steep hills or banks. I was wondering how the range might be effected since I know the spin stabilized 107mm rockets are fired from a tube and not a rail or track like the fin stabilized katyushas.
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Old 06-06-2007, 06:28   #4
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I have seen mobile launchers and improvised launchers which were basically troughs of two boards nailed together at 90 degrees to form a V shape.

Have you a counterbattery radar unit available in your AO to help pinpoint the launch sites? You can do it from the crater, but the radar is much more accurate, particularly for ranging.

TR
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Old 06-06-2007, 06:37   #5
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Old 06-06-2007, 08:24   #6
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These are Qassam rockets but you can see how simple the launcher rails can be.

qassam-launch.jpg
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Old 06-06-2007, 12:19   #7
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you would think getting the firefinder up would be a priorty, but they didn't have anything for us when a 107 did a lawn dart. It was a dud and was said to make a helicopter/pulsating sound on the way in. I don't think an artillery round would tumble near it's max range like a rifle round, unless maybe it was fired at very high velocity and a lower trajectory. Then again, that's why I'm not an expert. That might or might not have had something to do with it not detonating. Too bad those RKG-3s don't misfire...

Last edited by KSC; 06-06-2007 at 12:41.
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Old 06-06-2007, 12:36   #8
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KSC,

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Old 06-08-2008, 12:49   #9
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Firefinder vs Rockets

Firefinder will be pretty ineffective against incoming rockets. The trajectory is too flat and even though the radar observes the incoming round, its software filters out the round and classifies it as not conforming to the profile of a mortar or artillery projectile. It then discards the round and never reports it to the operator.

In Lebanon, there were difficulties to register and adjust the 16 inch rounds from the battleship USS New Jersey. The software essentially said that something that big can't fly or if it is flying, it ain't a projectile.

Is that helpful?
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Old 06-08-2008, 21:13   #10
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The OP is over a year old.. I'm guessing the poster is either back from his trip or getting ready to return....
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Old 07-08-2008, 22:39   #11
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KSC,

The tool you seek is called an inclinometer. Comes in analog (hanging pointer) or digital. I have the digital type and it measures angle in mils or degrees (see Google for Lucas AngleStar). Sears Craftsman and other big tool companies make analog types (used to measure driveshaft angle).

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Old 04-08-2009, 06:59   #12
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Tech Question

Does anyone know the minimum distance that at 107mm katyusha rocket can be fired at? Is the detonation requirement based on so many turns of the rocket, or the impact at the nose, or a combination of both. I would appreciate the expertise.

Thanks,
TFM

Last edited by TFM; 04-08-2009 at 07:03.
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