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authorCollin Williams <96917990+bluedragon1221@users.noreply.github.com>2024-10-24 20:03:03 -0500
committerCollin Williams <96917990+bluedragon1221@users.noreply.github.com>2024-10-24 20:03:03 -0500
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----
-title: The Banana Peel Bomb
----
-
-Fast forward about 30 years. We lived in Maine. I was married and had 4
-children. I guess I was having a mid-life revival of my childhood love
-of pyrotechnics. It was all the kid\'s fault, actually. I bought a few
-model rocket kits to fly with the kids. That was what rekindled the
-firebug in me. This quickly escalated into wanting to build bigger and
-more powerful rockets. The internet was just starting to be a great
-source for a lot of interesting knowledge and a way to buy mail-order
-chemicals to feed the curiosity.\
-\
-My goal was to design and build my own rocket motors. I was no longer
-content to buy the feeble little black powder motors you could get for
-model rockets in the local hobby stores. I was a mighty engineer and I
-could do better. After considerable research, I decided to try a formula
-I found in the on-line literature. The problem was that the rocket motor
-design required quite a bit of specially fabricated metal parts. I had
-neither the skill nor the tools to do this kind of work, but I knew
-someone who did. Brother Bibber was a machinist by trade and was willing
-to help me achieve my goal by doing the machining. I gave him the
-drawings and waited. It was nearly 3 months before he had the time to
-make my parts, but finally, he delivered a shoe box of beautifully
-crafted rocket motor parts. The design consisted of a piece of
-chromium-molybdenum pipe with threads at both ends. The concept required
-cylindrical shaped castings of rocket fuel that were placed inside the
-pipe container and then the end pieces were screwed on to enclose the
-solid rocket fuel. It was not much different than those silly home-made
-bullets I made as a child. It was still basically a fancy pipe-bomb,
-just a lot bigger and a lot more expensive. However, I was still just as
-naïve to believe my newest incarnation would work perfectly the first
-time.\
-\
-I thought my test plan was reasonable. I wanted to do a static test
-firing of the new motor design. I built a wooden test stand out of
-scraps of lumber. This stand was supposed to hold the motor in a
-stationary position while it was fired. This would allow me to
-demonstrate that the motor would actually develop enough thrust to cause
-a rocket to fly. After a successful static test, I would then use it to
-send a rocket into the sky.\
-\
-On the fateful day of the static test, I set up the test stand in the
-driveway in front of the garage. I loaded the assembled motor into the
-test stand and installed an electric ignitor. I called the kids to come
-see the test and we all stood about 10 feet away from the test stand as
-I pushed the button to ignite the motor. It worked beautifully for about
-10 milliseconds and then went kaboom with a bright flash of fire and
-smoke. My test stand, which was constructed of sturdy 4-by-4\'s, was
-blown into a cloud of tooth-pick sized splinters of wood. The motor
-itself was nowhere to be seen. I just disappeared into thin air. I
-finally found it a few days later when I spied it on top of the garage
-roof. After retrieving the motor from its perch on the roof, I realized
-how incredibly lucky we had been. The rocket motor looked like superman
-had opened it like a banana. One end of the motor casing had split open
-and the sides of the tube were bent back just like a half-eaten banana.\
-\
-It was evident from the shape of the wreckage that the metal alloy had
-been able to burst open without splintering into deadly metal shrapnel
-that might have seriously injured me or one of my children. This is when
-it finally dawned on me that I was incredibly lucky and still had rather
-poor judgement when it came to assessing the risks of doing pyrotechnic
-experiments. Furthermore, my beautifully machined metal parts, for which
-I had waited anxiously for many months, had been totally destroyed in an
-instant. It put a serious damper on my enthusiasm to become an amateur
-rocket scientist.\
-\
-This dramatic failure caused me to take a new direction in my
-pyrotechnic experimentation. I decided that rockets were too
-complicated. I would use the chemicals I had purchased to make fireworks
-instead. This kind of skill didn\'t require so many expensive tools and
-complicated parts. Most of the fireworks could be made with common
-cardboard tubes and glue. Thus, fate had sent me on a whole new kind of
-hobby pursuit. However, it didn\'t do much to lessen the likelihood that
-I would still experience epic failures. As you will soon see, my list of
-pyrotechnic failures was only just beginning.