It is a dream of mankind to fly like a bird. Birds are very agile. They fly, not with rotating components, so they fly only by flapping their wings. So we looked at the birds, and we tried to make a model that is powerful, ultralight, and it must have excellent aerodynamic qualities that would fly by its own and only by flapping its wings.
San je čovječanstva letjeti poput ptice. Ptice su veoma pokretne. One lete, bez rotirajućih komponenti, dakle, one lete samo mlatareći svojim krilima. Stoga smo promatrali ptice i pokušali smo napraviti model koji je moćno lagan, i mora imati izvrsne aerodinamičke kvalitete koji bi mu omogućile da leti samostojno i samo mlatareći krilima.
So what would be better than to use the herring gull, in its freedom, circling and swooping over the sea, and to use this as a role model? So we bring a team together. There are generalists and also specialists in the field of aerodynamics, in the field of building gliders. And the task was to build an ultralight indoor-flying model that is able to fly over your heads. So be careful later on.
A što bi bilo bolje nego koristiti Herringovog galeba, u svoj svojoj slobodi, kako kruži i nalijeće nad morem, i koristiti ga kao uzor? Stoga smo okupili tim. Postoje generalisti i ujedno i stručnjaci na polju aerodinamike na polju izgradnje jedrilica. A zadatak je bio izraditi ultralagan unutarnji leteći model koji može letjeti iznad vaših glava. Stoga se pripazite kasnije.
(Laughter)
A ovo je bio jedan izazov:
And this was one issue: to build it that lightweight that no one would be hurt if it fell down.
izraditi ga tako laganim da se nitko ne bi ozlijedio kada bi pao dolje.
So why do we do all this? We are a company in the field of automation, and we'd like to do very lightweight structures because that's energy efficient, and we'd like to learn more about pneumatics and air flow phenomena.
Zašto onda radimo to sve? Mi smo kompanija koja djeluje na polju automatizacije, i mi volimo izrađivati vrlo lagane strukture jer su one energetski učinkovite. I voljeli bismo naučiti više o pneumatici i fenomenu protoka zraka.
So I now would like you to put your seat belts on and put your hats on. So maybe we'll try it once -- to fly a SmartBird.
Stoga bih želio da sada vežete svoje pojaseve i stavite na glavu svoje kape. Možda ćemo pokušati jednom letjeti SmartBirdom.
Thank you.
Hvala vam.
(Applause)
(Pljesak)
(Cheers)
(Pljesak)
(Applause)
(Applause ends)
(Applause)
(Pljesak)
So we can now look at the SmartBird. So here is one without a skin. We have a wingspan of about two meters. The length is one meter and six, and the weight is only 450 grams. And it is all out of carbon fiber. In the middle we have a motor, and we also have a gear in it, and we use the gear to transfer the circulation of the motor. So within the motor, we have three Hall sensors, so we know exactly where the wing is. And if we now beat up and down --
Stoga možemo sada promotriti SmartBird. Ovdje je jedna bez kože. Imamo promjer krila od oko dva metra. Dužina je metar šezdeset, a težina, je oko samo 450 grama. I cijela je od karbonskih vlakana. U sredini imamo motor, i imamo i mjenjač u njoj. I koristimo taj mjenjač kako bi prenijeli cirkulaciju motora. Dakle, unutar motora, imamo tri Hall senzora, kako bi znali točno gdje je krilo. I ako sada mlataramo gore dolje...
(Mechanical sounds)
imamo mogućnost
We have the possibility to fly like a bird. So if you go down, you have the large area of propulsion, and if you go up, the wings are not that large, and it is easier to get up.
letjeti poput ptice. Dakle, ako idete dolje, imate veliko područje uzgona. A ako idete gore, krila nisu toliko velika, i lakše je ići gore.
So, the next thing we did, or the challenges we did, was to coordinate this movement. We have to turn it, go up and go down. We have a split wing. With the split wing, we get the lift at the upper wing, and we get the propulsion at the lower wing. Also, we see how we measure the aerodynamic efficiency. We had knowledge about the electromechanical efficiency and then we can calculate the aerodynamic efficiency. So therefore, it rises up from passive torsion to active torsion, from 30 percent up to 80 percent.
Dakle, iduća stvar koju smo napravili, ili izazove koje smo premostili su bili koordinacija tog kretanja. Moramo je okrenuti, ići gore i ići dolje. Imamo potrgano krilo. S potrganim krilom dobijemo potisak na gornjem krilu, i dobijemo uzgon na donjem krilu. Ujedno, vidimo kako mjerimo učinkovitost aerodinamike. Imali smo znanje o elektromehaničkoj učinkovitosti i zatim možemo izračunati aerodinamičku učinkovitost. Stoga, podiže se iz pasivne torzije u aktivnu torziju, s 30 posto na 80 posto.
Next thing we have to do, we have to control and regulate the whole structure. Only if you control and regulate it, you will get that aerodynamic efficiency. So the overall consumption of energy is about 25 watts at takeoff and 16 to 18 watts in flight.
Iduća stvar koju moramo učiniti, je kotroliranja i reguliranje cijele strukture. Samo ako je kontrolirate i regulirate, dobiti ćete aerodinamičku učinkovitost. Dakle, ukupna potrošnja energije je oko 25 vati prilikom polijetanja i 16 do 18 vati u letu.
Thank you.
Hvala vam.
(Applause)
(Pljesak)
Bruno Giussani: Markus, we should fly it once more.
Bruno Giussani: Markus, mislim kako bi trebala još jednom letjeti.
Markus Fischer: Yeah, sure.
Markus Fischer: Da, naravno.
(Audience) Yeah!
(Smijeh)
(Laughter)
(Gasps)
(Uzdasi)
(Cheers)
(Navijanje)
(Applause)
(Pljesak)