I made copies of the parachute to test the material binding and string strength. We wanted to see which was the weakest point in the parachute, the string strength or the material binding.
We tested the parachute at Limerick Institute of Technology using a tensile-testing machine. We first tested the string strength to see how much strain it could withstand. There were two clamps that clamped onto the strings and one moved upward slowly pulling it apart while the computer calculated the strain. It estimated to be about 150 newton.
We than tested the one string with binding attached, using the same method, once again the amount weight the string could take was about 150 newton. Since the string snapped in the middle and not at the binding, it showed us that the string was the weakest part in the parachute not the binding or the material. We are really glad about this because it means our parachute should work properly on Launch Day.
When we tested the demo with two strings and binding the weight it could take was almost double, which meant our readings were accurate.
According to our tests results the parachute should be able to take more than the required weight.
By Tayyaba and Evan
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