Monday, March 7, 2011
Lauch Day #4
Today was our fourth day launching our rockets. We had a really hard time obtaining a time of 5 seconds. We had 3 trial runs with our original design (One with 3 fins and our parachute taped on) The times for those three trial runs were 4.5 seconds, 4.9 seconds and 3.0 seconds. For the three trials we also tried to compile the same data too see if there was a difference. We tried to reach 75 psi and we filled the rocket 1/2 way full with water. From there we established that we needed to go back to the drawing board and figure out what we were doing wrong. So we analyzed our entire rocket and reconstructed it so that there would again have 3 fins but this time it would have a parachute attached by string. On our fourth launch of the day we testing out new model out. I surprisingly worked. Our rocket not only passed the 5 second mark but it also got lost in the performing arts buildings. Unfortunately we have to reconstruct our rocket from scratch :(
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So sorry to hear about your lost rocket, but it was very good for you guys to reattach fins onto the rocket because they are so needed in order to function. If you guys start from square one and readjust some things, I'm sure you guys can obtain close to ten seconds. Maybe incorporating a larger parachute and adding tabs on the side of your bottle will be necessary for a more effective launch.
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