 So now we're going to hear from Winifred, about that fabulous solar car that's outside, so to you, Winifred. Hello everybody, welcome to the Ivy Technic Show and welcome to the last cornerstone presentation. My name is Winifred and I'm a civil engineer, 23 years old and part of the new solar team. I'd like to tell you a little bit more about the new solar team later on, it's important that we first establish what all of us have in common here and I think that it's been somebody telling us that what you're trying to do, maybe it's a PhD, maybe it's a starter or some other difficult study that you're trying to do, it's impossible and you shouldn't be doing it. Well that's what they told us, what we said that we were going to build a solar car and still we did it and we actually became really successful at it and I'd like to show you how we became successful at it and what kind of technologies we use to do that. But I first like to introduce you to the new solar team. So we're nine students from the Delta University of Technology from the Netherlands and all of us have different backgrounds. So there's aerospace engineers, electrical engineers, I myself am a civil engineer, applied physicist, mechanical engineers and so on. And that maybe was the house's challenging part this year that all of us had a different background. But in the end, all those different backgrounds was actually what made us so successful and made sure that we had such a vibrant knowledge. So that's what we are, but what do we do? Well, we build a solar car and we call it a solar car unit. And as you can see, she doesn't really look like a normal car at all. And that's because we took aerodynamics in account a lot. And this is a very interesting picture because there's a lot going on and this picture explains very well what our project is about. So as you can see, there's all these little kids in the background watching what we are doing. And that's good because we're trying to show the world how important it is to keep developing new technologies and also what you can already do with great energy. Because our solar arena, she runs solely on solar energy and she drove actually about 3,000 miles or just under 5,000 kilometers only using the power of the sun. So why do we drive her? Well, there's two locations that we do drive her and all the years, that's in Australia and in the even years, that's in South Africa. So this picture was taken last October when we were racing there. We were racing to about 17 other solar car teams from all over the world and our biggest competitors are Japan, Tokyo. Are there any people from the planet here? Cobble, yes, I see one. They were our strongest competitors and we really had a hard time meeting them because they were pushing technologies as well and they also developed a lot of new things. And we were also racing against a team from Hungary and they were really good at structural mechanics actually. So we learned a lot from them this year, hopefully we're going to put that into practice next year. So what else do you see? You see the kids that we're trying to inspire and teach what we can do with technology but you can also see the team and they all know their place. Every single one of them knows exactly what they're doing and when they should be doing it. So once more I'd like to show you that teamwork is really important if you'd like to accomplish something. And then there's now, of course, all technology and I'd like to tell you a little bit more about those technologies now. So I'm going to take you through all of the nine subjects that are shown here because all of them except for one are in our car and I'd like to start with 3D printing. So what you can see here and I'd like to tell you about 3D printing first because it's one of the first subjects that we gave across this year. It's actually something that we're testing. So this is not in our car, we just use it for testing. And the see-through shell, as you see, it's 3D printed by a working ASM and it was very, very important for it to be see-through because what we needed to do was actually, we put some airflow in it, smoke and I saw how it was moving to determine if we were able to improve our aerodynamics with the shape. We did, actually, it was successful. So we made it out of a firm fire and put that exact shape on our car. We use a lot of carbon fibre, our complete car is made out of carbon fibre and it only weighs about 330 pounds or 150 kilograms. So we're able to lift the car with just four people and move it around if we want to. So this is one of the 3D printing things that we use but it's not in our car and then I'm going to show you what is 3D printed at the inner car and it's a Runaas cowl film. So before we had this, we, the end of the Runaas made of carbon fibre just like the rest of the body. And we really were struggling to make it as thin as possible and still have the rear lighting because you needed to see them and you know, carbon fibre is not see-through so it always was quite thick still. And then we discovered the 3D printing and we were able to put the led lights on like we always had them and then have the 3D printed strip as thin as we wanted to to make sure that all the air flows off nicely and we actually, with those two things that you just saw we were able to prove Runaas aerodynamic performance by about 8%. So that really is a lot and that in just under two years time. So next up, and I think this is the most easy one for a solar car of course, it's energy harvesting. And we do that in two ways with our solar parts. And the first one is regenerative raking which is really handy with all the hills in South Africa so we use that in all the world. And of course, there's the second, the easy one and that's the solar airing. The cells for you serve just normal silicon cells. You can buy them in Super, you have minimum one cells and one of you can buy them. They're just on the consumer market. So that's not special. The thing that is special however is the rest of our solar area. So the leavened. And it took us about four years of research and development to be able to make it and this year we finally pulled it off. We were able to put our own handmade solar panel on our solar arm. So here you can see that they're still testing stuff and so on it's not finished at all. And how does it work? Well, it works when the sun comes in. It goes through the top sheet. Some of it gets in the cell and some of it is bounced back. But because the top sheet is like a prison shade some of it reflects back. And that was what's new. And it actually made sure that our solar area was 1% more efficient than the last one. And some companies even call it the best solar panel in the world so we're really proud of that and it really made sure that we won this time again. So here you can see the R&D process. And here you can see a picture of the final product that you can see. She's shining. So this was actually our first test day in Cyprus. And it was completely working and all the results came out good. Well, amazing. You can develop something yourself and it's actually working. So now you know how the energy comes in. But where is it stored? Well, just like most electric vehicles, it has a battery pack and we make these ourselves too. And it's 20 kilograms of lithium-ion so very small compared to the Tesla for around 500 kilograms, for instance. But it still has a range of 500 kilometers. That's a lot, right? And this picture is very interesting as well because what you can see here is that we opened up our battery pack for the first time to our teams and all the teams were running in and we were trying to figure out what we did so there's the Japanese team, the Hungarian team, the South African team. All of them were trying to make pictures and figuring out what we were doing. Then this one. And you might not really expect this in an electric vehicle. But where do you use the wearables? Why aren't they handy? Well, I'll tell you. You can see the picture over here and these were in their glass. And it's actually in all of the Google Glass. And what we did is that we used the Raspberry Pi so that's where the things comes in and we put it in our car to measure the G-forces on the side of the car. So now we could figure out what speed our car should be taking circuit borders on the circuit. And that came in really handy because before this year we really, really sucked at doing doing circuits. We always, when we had to do that a qualification race we always came in like 13 or 18 or even worse and we still managed to become first in the complete race but just that part of the race we weren't good at it at all. Until this year when we figured this out because our driver could see like he had this Google Glass moment and he'd have a bar there showing red, green, or orange at the time that he was driving so he knew that, oh, how I keep going a little faster. And you know what? He managed to come in second this time. So it was not even it was a personal record but we also brought the track record of that sort of track. So I'm really happy of course the record got broken straight away but still we were very happy with it. So we managed to start second so this was one of our major developments this year. But there's another variable that we use and it's from our sponsor Tontal. It's a smart watch and we can see the speed on it when we're driving so it's a backup for when anything goes wrong you can always see your speed but it's also like you can keep track of if your driver is still doing fine. So that's one of the other variables that we used. Well, electric vehicles this one is all used a bit. But also I'd like to point out the part about sensors and PCBs because we used them too but I don't really have a good picture of them. So if sensors of course are anywhere we use them for instance for our braking discs to keep track of how hot they get and we used to be in these fees they're usually custom made some of them are custom made by word electronics they're on this IE TechX show as well and they're for instance in the steering wheel. So we use them in a lot of parts in Nuna. But I'd like to talk a little bit more about electric vehicles because of course this is an electric vehicle and as you can see it's driving on public roads. It's overtaking trucks. It's driving about 80 miles an hour. It has the performance of a normal car. Oh, we think that's pretty amazing. But even though it's performing like this we don't really think it's ready yet to be on the roads like the cars that you can buy at your local car lot. Why not? Well, we think that you should compare Nuna to a Formula 1 cars and your cars really buy a box for stoppers car at their local car lot, can you? This car we're pushing technologies. We're not making it comfortable. We don't care about that. We just want it to be fast and we just want to try new technologies in it. So that's what we're doing and we strongly believe that those new technologies can be found on the consumer market in a couple of years. Maybe don't use those school glasses Formula 1 racing in a couple of years. We don't know. Maybe for practicing and maybe you'll have that solar panel. Maybe you can have it on your rooftop. Well, we're just saying we think pushing your technologies is more important than bringing this car on the road. But then again I'd also like to make a comparison about mobile phones. So the first enabling mobile phone technologies were introduced in 1941 and it took over 40 years 40 years to have them on the consumer market. And look at us now. Everybody's got a mobile phone. So maybe, I mean, we're a second valley in the land of Tesla. We can bring this car to the market in a couple of years. It's just going to take some time. That's all. So I'd like to take you to the last slide already. And this is a picture of what's really in South Africa. So after 3,000 miles across the finish line we became world champion in solar car racing for the eight time. We were really happy of course. But that's not really where it ends. Because there are startups generated from this. There's a new car already being built in the Netherlands. And that wouldn't be possible if we didn't have our sponsors. Because you can see it on my t-shirt but we have a lot more. We have a brand new from really big to really small. We even have one that breaks fresh fruit every week. And they are just as important as our main sponsor. So it's an open invite to all of you. Like if you're interested to becoming part of this to maybe become world champion for the nine time event. Because we're always open for another sponsor. So I think I'd like to finish up with that about the presentation. But I'd also like to introduce you to the rest of my team. Because maybe you've seen it already. They're the orange t-shirt. And they've been walking around all day yesterday as well. And you can ask them questions whenever you like. But I'd like to ask them to stage and introduce them to you. Come over. They are the faces about these technologies I've just told you about. And they're just students of the Delta University of Technology and they did an amazing job. So this is Crystal. And she did actually she did all the maths this year. So she was figuring out during the race what speed should we be driving to make sure that the battery pack is exactly at the time we finish the finish line. So then there's Siba. Well I told you how important sponsors were and marketing. And he took care of that. Then there's David our electrical engineer and he was the guy that made the solar panel. He did it all by hand. He's our mechanical engineer and he was the one that took care of all the 3D printing this year. So if you have any questions about that and then last but not least there's Beau Salette. These are technical managers and he made sure that all of us didn't get out of control and we didn't get overworked and only did like one research and development project at a time. So if you have any questions come find us at T29 and hope you enjoy the rest of the show.