Introduction:In this section talk about what we did and how it connects to the Rocket project
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In our first stage of the Heritage Water rocket Project, we are looking at parachutes as a possible recovery system. The fist investigation in Lucky Landing we investigated 3 attributes of a parachute to see how they affect the decent times of an object. Those three attributes were canopy size, canopy material and the length of the suspension lines.
The investigation for canopy size, we created three parachutes made out of tissue paper, with 21 inch suspension lines as our control measures. The independent variable was the diameter of the parachute canopy, there was an 8’inch canopy 14’inch canopy and 18’inch. For this test we are measuring decent times as our dependent variable. To ensure data validity we dropped each parachute version 3 time and took the average to compare decent times. |
Hypothesis: Canopy Size:This is nothing more than restating your predictions that you wrote prior to the testing
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My team predicted that a larger canopy would fall slower then the smaller 8’ and 14 inch canopy. The 18’ inch canopy should have the slower decent time because the larger surface area of the canopy should create more drag. Drag slows and acts against motion. We will now if your hypothesis is correct if we see the decent time increase as the canopy diameter increases. If the decent time decreases sand the parachute falls faster than our hypothesis is wrong.
YOU ALREADY WROTE THIS JUST CONVERT IT TO DIGITAL
Insert pictures of your data collection sheet and videos here. |
Results and Observations: |
First we tested the 8’inch parachute. We noticed that the parachute dropped relatively fast and that the canopy had a hard time opening. After the three trials of the 8in canopy we found average decent time was 1.2 secs. Which is not a good decent time for a parachute.
Next we tested the 14 inch……… Lastly we tested the 18' diameter canopy. |