The Rocket Misadventures
At the beginning of summer I was put in charge of a new AIAA project (AIAA is the American Institute of Aeronautics and Astronautics, a club at UCF that also has prestigious professional reach). With a limited budget and anyone interested, we're probably going to start small by building a few Estes rockets while I give lectures on basic rocket flight dynamics (it's not as technical as it sounds), then working up to bigger models and possibly some electronic payloads. I bring this up because on Monday I learned how to make rocket propellant out of household ingredients.
At our weekly SEDS meeting (the Student for the Exploration of Space, a rival aerospace club at UCF that I'm also a member of, and both clubs give me trouble for being in the other one, but that's not my problem), a guy from Santa Fe Community College came down with a few cases of his personal experimental supplies and taught us the basics for propellant mixing. All you need is an electric skillet and a spatula for kitchen supplies, and the ingredients are sugar, Kayro syrup, water, and potassium nitrate (ok fine, not so household, but very cheap online, despite it being used as the primary explosive in homemade bombs such as the Oklahoma City bombing). All you do is mix the ingredients at 300 degrees until the water evaporates and then put it in a mold.
Once we had made our propellants we went outside with small pieces for test burning. There are few things more fun than lighting things on fire, and one is lighting things on fire with permission from a professor in a parking lot by a tree. We set our test strands on the ground and used a can blow torch. I was surprised how long it took for the strands to burn out; we averaged about 12 seconds per inch of propellant. The cool part was there was nothing left on the ground but a small burn spot. Because the propellant wasn't chambered or focused, it didn't go anywhere, but it still burned in the conical shape of a solid propellant rocket. The only analogy I can think of to this is when you blast anything with a fully charged plasma beam in Metroid Prime, except a little slower and with a cone of fire coming off the edges (I know, no one reading this has ever played that game but me).
On Monday we are going to launch some rockets using our propellant. Hopefully I'll be able to incorporate my knowledge of propellant mixing with the AIAA program so we can make our own propellants. Two members of AIAA work for my boss in a propellant mixing and testing project similar to mine (mix something then light it on fire, only theirs is with solid fuel and mine is gaseous), so I may be able to get some insight from them.
Over Spring Break I took some time to launch rockets. Here's an earlier account of those events:
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THE ROCKET MISADVENTURES
Let me say this: legal model rocket launching is not as fun as illegal spud launching, even if it's safer. However, illegal rocket launching on campus affiliated housing property is pretty fun too. I got a model rocket kit for Christmas that I had only used once at the Lake. I decided that even though there are over a dozen rooftops in my phase of the apartment complex a rocket could get stuck on and even more trees to get caught in, I decided on Thursday that is would be a good idea to launch my B engine rocket.
I went outside. There was no wind. Perfect. I had a little trouble deciding where to launch it, but I eventually settled on setting up the launch pad on the basketball court. After a brief countdown, I pressed the launch button. Nothing. I am officially the worst rocket scientist of all time. I get mad and figure it's the batteries, replace them, and hit the launch button. Nothing. I decide the launch wire is busted. I find a fuse from my firecrackers but can't find a lighter. I get mad and go to WalMart to buy a pack of C engines because C engines have twice as much power as B engines.
After lunch, I come back and actually read the directions on the motors. It turns out I hadn't cut out the connecting wires properly and they fell apart too much to use. I loaded a C engine in, took a few steps back and, after a 5 second countdown, pressed the launch button.
SSSSSHHHHHOOOOOOOOOMMM!!!........*pop*
If you've never pressed the button, you don't know the ecstatic feeling a rocket burns gives you (or at least space cases like me). As the rocket ascended, I watched and jumped around like I did when I was in third grade and had my first rocket launch. As it descended, I thought it would be a good idea to try to catch it has it landed. After racking my privates on a picnic table, I determined it would be best to look where I'm running when I catch this thing. I caught it in the air as it floated down between the clubhouse and the apartment building next to it. Three guys on their third floor patio cheered as I caught it in my hand.
Feeling immortal after a successful launch, I hastily assembled the rocket for another launch, and when I say "hastily assembles," I mean "forgot to load in burn wadding and slapped in a new C engine" meaning when this thing launches again the parachute will have a hole burned in it during burnout. After five minutes and two runs to my room to get supplies, I slipped the rocket onto the guiderail, stepped back, and pressed the button.
SSSSSHHHHHOOOOOOOOOMMM!!!........*pop*
Once again, grinning like a donkey, I run after the rocket on its way down only to realize the wind had picked up a bit and the rocket was heading for the clubhouse roof. I heard the sound of plastic bouncing on hard material, and walked around to the front of the building to see the rocket laying halfway up the roof. Since I'm no punk, I grab the pool-cleaning hook and try to save it. It worked. I feel empowered. My parachute has a hole burned in it, but it's not too big to care about.
A few hours later I get bored and use the extra connecting wire to use the B motor that I couldn't get to work earlier. Out on the basketball court again with no wind, I press the launch button.
SSSSSHHHHHOOOOOOOOOMMM!!!........*pop*
Not as high as the last two, but even closer to perfection with the launch angle. Straight up, caught in my hands in the tennis court. I am a rocket launching genius. After putting it back together, I found the old connector that was broken, managed to put it back together with pliers, and let'er rip.
SSSSSHHHHHOOOOOOOOOMMM!!!........*pop*
Perfectly straight. Ne'er have I witnessed a spectacle or grinned like an idiot... until I saw the parachute fly off and float away, never to be seen again. My rocket was racing downwards at terminal velocity and moving away from me because the wind had just picked up. I couldn't judge where to run until it was too late. I was within five feet of the landing site when it smacked into a car. Stupid chutes. After I finished wetting myself I looked at the car and saw no damage. And when I say "looked," I mean "glanced at the car for a giant dent and looked around for any witnesses." One of the fins had broken off and now remains on the floor of my room awaiting super glue. It was officially time to stop for today. [I fixed the fin two days ago]
But that wasn't the end of my rocket misadventures for the week. On Sunday afternoon I became a little impatient with the wind conditions and decided to launch a mosquito. A mosquito rocket is approximately 4 inches tall, 3/4 inch in diameter, and only supports an A engine. Granted, it's small, but A engines pack no punch, especially the miniature versions for mosquitoes. "There's no way that's going very far" I said to myself. Famous last words.
Although it was windy, wind had nothing to do with the immediate shock of this launch. This thing has a wussy engine, it's not going anywhere. I'll angle it into the wind a bit so it comes right back to me. Press the button and...
ZIIIIINNGG!!!
Gone. That thing went clear over McCulloch and possibly over Alafaya. There was no way I was going to recover that one. The whole incident took me by surprise because the little buggers aren't supposed to do that. Oh well, I still have one more mosquito for launch right in front of me. Now my place smells like burnt steel and noxious chemicals. Ahh, I love it.
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I haven't gotten any word back from Space Generation or NASA regarding my applications, but I will post my status when I hear about it.

