Well the idea of this project is to accurately model fish as actually Petroff and right and the reason for this is that it's based on the way that it's modeled which is set forth in the paper that was pretty certain by Professor Al Ben and a few other people at Harvard because the way the thin right model works. It should serve as a device for sort of robots. I think like that in the future. So talk a little bit about how the center is work and then the design and how I tried to get that model work and then just a little bit of patients and future research is actually the hope is made up of a bunch of generators defender a sort of like they look like muscle tissue just the red strands and what they're made of is this right here sort of a membrane. And these are actually bones which is the biggest part of what I'm modeling and it's a big part of how the finesse actually move because if you see right here. If you apply pressure to one end. If you put one end up. It's the same thing the other direction. So that's how you get the flap and with not a lot of effort but the what happens when you do that is that there is traces and these actually when you put it this way this one is going to shift over here and this thing shifts over here. And the way the forces between these work is that these two the membrane tries to sew the strain. Top of each other and so this membrane over here. Just keep is about a saying the same distance which is why playing off each other. It's going to start. So that instead same distance and he said. Same distance. So this is basically one piece of model. This is sort of modeling the metrics right here and the spring is designed so that it can be the first between the two trying together and as you can see over here it's shifted a little bit. I realize this is fairly crude at the moment but this is also a big part of the design was that sort of springs and all the forces could be interchanged so that we could play around with that and see what the best thing to do was as far as getting it to model the actual equations. He was got two of the pieces that I just showed you. And basically this is one way that I haven't connected. I have also tried some springs and other things but that's the way it was set up when I took the picture. But right here. I don't actually have springs and this picture. But there should be strings connecting these two which again need to be interchangeable. So that we can climb out of that a little bit and so we see here as if this was the base of the fender right by pulling one end back and pushing one and fill in and so that would do is cause this point there's ferrite so I'm sorry the Symmetrix to move a little bit further and this one backwards at the same time is going to talk a little bit and so by stringing a bunch of these together then we're going to get a model on an actual center. I wasn't kidding when I said this is stone still being done so like I said the pushing in the pulling is what's causing the whole thing to flap. And as far as this goes when we demean Elsa's all we have to do is put in a remote it's going to close things back and forth. And that way we can and analyze that with you know a fairly accurate flapping motion and be able to do that. The other thing about the cell is the way only true picture with all the stuff sticking out of this. It's a little bit of a problem to get an accurate way of how it disperses accurate idea of how displaces broader So the plan is to attach sheets of metal to it and stick them up out of this back to the side of this coming up and then that way that will be just a pure motion of what we're trying to model and yeah. In the future this I'm hoping and press are album is hoping that this is if the results here are promising then some and run. Perhaps not made out of this. And be able to in the future use this on robots. Because it's a lot better than if it was just fun. Now that's that's about it. I wasn't kidding when I said it was cool. You ran a long time having questions. Now let's back out the Petrof then is basically a big collection of Fender rays each one of these is a fan right. And how it moves each one of the fan arrays is it's got muscles that move the base of the fan and I said just the first time the tracks. It just moves one of them present towards one side and that sort of things going to move. Yes right. And then that's going to move everything else. Right. And then I guess I don't know exactly right. That's the idea and I was kind of hoping that deal farther with this when this presentation came around but unfortunately right now there's not a lot of experimental data as far as the different spring constants and stuff like that you will have one and we're going to try different springs to symbolize different forces see which forces are going to overpower which forces and in that way we're going to try to get to model the actual equation and that there is an equation for these kinds of things and in that paper. I don't have it here because it's it's so. Right. I believe the scale on this picture right here is this line is I believe a quarter of a millimeter so pretty small. Exactly. But the ceiling like I said this is sort of the marriage sort of.