WEBVTT 00:00:00.000 --> 00:00:01.040 Hi everyone. 00:00:01.119 --> 00:00:02.091 So, we're back! 00:00:02.353 --> 00:00:04.703 My name is Eliot, and she is Jing Xuan. 00:00:04.763 --> 00:00:07.583 We are back with our coilgun version 2 00:00:07.636 --> 00:00:09.844 So, for those of you who missed our first talk, 00:00:10.743 --> 00:00:14.152 a coilgun is an electromagnetic projectile launcher 00:00:14.152 --> 00:00:18.122 that uses electromagnets to propel a projectile. 00:00:18.271 --> 00:00:21.901 We start off by firing the first coil 00:00:21.911 --> 00:00:25.171 which sucks the projectile into the middle 00:00:28.794 --> 00:00:29.044 and activates the first sensor which activates the second coil, 00:00:31.625 --> 00:00:32.906 and the second sensor which activates the third coil 00:00:32.906 --> 00:00:33.976 which then fires the projectile. 99:59:59.999 --> 99:59:59.999 A quick recap of our version 1 - 99:59:59.999 --> 99:59:59.999 we made a 60 Volt 3 Stage coilgun 99:59:59.999 --> 99:59:59.999 that was modular and could fire with 99:59:59.999 --> 99:59:59.999 either one, two, or three stages, 99:59:59.999 --> 99:59:59.999 or one stage with all the power of three stages 99:59:59.999 --> 99:59:59.999 into that one stage. 99:59:59.999 --> 99:59:59.999 But the disadvantage of having it modular 99:59:59.999 --> 99:59:59.999 is that you need to do a lot of daisy chaining 99:59:59.999 --> 99:59:59.999 because you need to pass the power 99:59:59.999 --> 99:59:59.999 from one end to the other.