How to Fire a 90mm Projectile without Gunpowder.
How to Fire a 90mm Projectile without Gunpowder.in Military Stories and Humor in Uniform Thu Dec 30, 2010 12:41 pm
by LLE • | 101 Posts
As my class came close to the end of our Radar/Analog Computer course, the AAA&GM school detachment decided to teach us the rest of the electrical equipment on the 90/120mm gun mount. Our radar laboratory classroom buildings were one story, low brick buildings, and there was row after row of these long buildings, because there were many different pieces of equipment taking up space, when the radars were disassembled for easy teaching purposes. In between these long buildings there was a good bit of real estate, on which 90mm gun mounts were emplaced, so that the Fire Control Electrician students could work on troubleshooting the electrical circuits on the guns [Electrohydraulic drives for azimuth and elevation, projectile fuze setter, semi-automatic basket and rammer, etc.]. So the instructor gave us the operation manuals and schematics, and told us to break into three groups of about ten each, and each group would take one gun mount to trouble shoot. The last thing he said was something like--"Now listen, you SOB's--just because you are hotshot radar techs and these circuits are far easier to troubleshoot, you better be heads-up on what in hell you are doing. Most of the troubles have to do with the basket and rammer, and you have to remember when you fix a basket/rammer trouble and then test it, you have to be sure you have the dummy powder charge and the dummy projectile, placed properly in the basket, before pressing the operating button, because that rammer is dangerous. Also, you have to remember to clear any azimuth/elevation data, before you test". We all laughed, and proceeded outside to the gun mounts. Troubleshooting was definitely easy, and sure enough most of the gremlins they put in were in the fuze setter, basket and rammer. My group was composed of almost all NCO's who were experienced AAA troops, and we finished the job quickly. We were sitting around telling BS stories, drinking coffee, and watching the novices on the gun mount about 30 yards from us, down the row. Suddenly, their gun began to traverse violently, both in azimuth and elevation, knocking a couple of EM off the mount, a$$ over tin cups. Then it came to an abrupt halt and the basket descended to the breech, as everyone else was jumping ship. Problem---there was no dummy powder charge in the basket, and the dummy projectile had slid down to the bottom of the basket, and was forcefully contacted by the rammer, which launched the projectile in a high, field artillery type of trajectory. It was one of those life events that seem to go in slow motion. All you heard were repetitive exclamations of "Ohhhhh, $hit---HOLY $heeeitt!!", as we watched the projectile disappear. The projectile descended through the roof of a radar buiding about a block and a half away. It tore a neat hole in the roof, came through the false ceiling, destroyed several flourescent light fixtures and ended up taking out a large radar transmitter module. Luckily, no one was hurt because that lab was not in use at the time. You can guess who cleaned up the mess, and reinstalled a new transmitter module.
That happened just before Christmas of 1951. They said we could have the remnants of junk from the damage, and we built a special Christmas present for the CO of the school detachment. It was a "Christmas Tree"/Christmas card from the Radar Maintenance Class XX Field Artillery!!
RE: How to Fire a 90mm Projectile without Gunpowder.in Military Stories and Humor in Uniform Thu Dec 30, 2010 12:51 pm
by samD • | 534 Posts
RE: How to Fire a 90mm Projectile without Gunpowder.in Military Stories and Humor in Uniform Fri Dec 31, 2010 8:49 am
by HampsterW • | 461 Posts
RE: How to Fire a 90mm Projectile without Gunpowder.in Military Stories and Humor in Uniform Fri Dec 31, 2010 3:34 pm
by LLE • | 101 Posts