Wednesday, April 16, 2008

Artillery Locating Radar

Well, I guess Praising Allah was not enough for this mortar team. This video is made by the bad guys and was captured by our troops. The mortar launcher's friend is praising Allah as he is launching mortar shots at American troops. Our troops have "Mortar Tracking Technology which can track the trajectory of a hostile round and fire a retaliatory shot to precisely the spot from which the hostile shell is fired. It requires only that the bad guy fires a couple of rounds, then it zeros in on him. Count the number of mortar rounds the masked terrorist fires.

1 comment:

peter said...

Well, the explosion occurred at the exact moment that one would have predicted for the propellant fuse to ignite based on the time it took previous shells to be 1) dropped into the tube and 2) subsequent ejection from the tube. It would be an amazing coincidence that a retaliatory mortar shell struck at exactly that same moment. Amazing coincidence, but possible.

However, the time-of-flight of a mortar projectile is considerably long. Basic newtonian physics says that a mortar round traveling at at least 140 m/sec fired at an angle of what looks to be at least 45 degrees will take at least 17 seconds or more to reach a target.

Time it for yourself- there is barely a 9 second gap between the firing of the first mortar until the explosion. There is no physical way that-
1) the EMI radar detected the first shell
2) transmitted arc of tragetory information to a US mortar
3) correctly positioned and fired the US retaliatory mortar or other field artillery
4) retaliatory shell completed it's flight all in under 9 seconds

A direct line-of-sight weapon, like a hellfire guided missile or hydra rocket from a nearby helicopter, could strike within the time frame of the video. However, the explosion from a single hellfire would have taken out the cameraman, so that could not be the case. Hydra rockets are usually fired in pairs and there was only one explosion, so that's not it either. Unguided rockets also have poor accuracy.

Without more evidence to go on, the simplest answer is that the primary shell exploded moments after the propellant fuse ignited, thus causing the explosion.