If you're at all like me, this is what you do with the sunny summer weekends in San Francisco: you build experimental kite-powered hydrofoils capable of more than 30 knots. And you realize that there is incredible power in the wind, and it can do amazing things. And one day, a vessel not unlike this will probably break the world speed record.
Ako imalo ličite na mene, ovo ćete raditi tokom sunčanih letnjih vikenda u San Francisku: pravićete eksperimentalne hidrokrilce koje pokreću zmajevi i koji postižu brzinu veću od 30 čvorova. Shvatićete da postoji neverovatna snaga u vetru i da on može da uradi sjajne stvari. Jednog dana, letelica slična ovoj verovatno će oboriti svetski rekord u brzini.
But kites aren't just toys like this. Kites: I'm going to give you a brief history, and tell you about the magnificent future of every child's favorite plaything. So, kites are more than a thousand years old, and the Chinese used them for military applications, and even for lifting men. So they knew at that stage they could carry large weights. I'm not sure why there is a hole in this particular man.
Ali zmajevi nisu samo igračke Ispričaću vam kratku istoriju zmajeva i reći nešto o blistavoj budućnosti omiljene igračke svakog deteta. Zmajevi su stari preko 1 000 godina i Kinezi su ih koristili u vojne svrhe, čak i za podizanje ljudi. Dakle, tada su znali da mogu da nose velike terete. Ne znam zašto ovaj čovek u sebi ima rupu.
(Laughter)
(Smeh)
In 1827, a fellow called George Pocock actually pioneered the use of kites for towing buggies in races against horse carriages across the English countryside. Then of course, at the dawn of aviation, all of the great inventors of the time -- like Hargreaves, like Langley, even Alexander Graham Bell, inventor of the telephone, who was flying this kite -- were doing so in the pursuit of aviation.
1827., čovek zvani Džordž Pokok zapravo je prvi koristio zmajeve da vuče prikolice na trkama konjskih zaprega preko engleskih sela. Onda naravno, na početku letenja, svi veliki pronalazači tog vremena - poput Hargrejvza, Lenglija, čak i Aleksandra Grejam Bela, pronalazača telefona, koji je upravljao ovim zmajem - svi su radili ovo u potrazi za letenjem.
Then these two fellows came along, and they were flying kites to develop the control systems that would ultimately enable powered human flight. So this is of course Orville and Wilbur Wright, and the Wright Flyer. And their experiments with kites led to this momentous occasion, where we powered up and took off for the first-ever 12-second human flight. And that was fantastic for the future of commercial aviation.
Onda su se pojavila ova dva momka i oni su koristili zmajeve da razviju kontrolne sisteme koji bi im omogućili motorni ljudski let. Ovo su naravno Orvil i Vilbur Rajt, i njihova letelica. Njihovi eksperimenti sa zmajevima doveli su do ovog značajnog trenutka, kada smo pomoću motornog pogona leteli prvi put 12 sekundi. To je bilo fantastično za budućnost komercijalnog letenja.
But unfortunately, it relegated kites once again to be considered children's toys. That was until the 1970s, where we had the last energy crisis. And a fabulous man called Miles Loyd who lives on the outskirts of San Francisco, wrote this seminal paper that was completely ignored in the Journal of Energy about how to use basically an airplane on a piece of string to generate enormous amounts of electricity. The real key observation he made is that a free-flying wing can sweep through more sky and generate more power in a unit of time than a fixed-wing turbine.
Ali nažalost, to je još jednom potisnulo zmajeve na mesto dečjih igračaka. To je bilo do 1970-ih kada smo imali poslednju energetsku krizu. Neverovatan čovek Majls Lojd koji živi na periferiji San Franciska, napisao je ovaj prvobitni rad koji je potpuno ignorisan u Dnevniku energije o tome kako koristiti avion na komadu užeta da bi se napravila ogromna količina struje. Njegovo ključno opažanje je da krilo u slobodnom letu može više da preleti i stvori više energije u jedinici vremena nego fiksirana turbina.
So turbines grew. And they can now span up to three hundred feet at the hub height, but they can't really go a lot higher, and more height is where the more wind is, and more power -- as much as twice as much.
I turbine su rasle. Sada mogu imati do 90 metara u nivou osovine, ali zapravo ne mogu ići još u visinu, a na većim visinama je više vetra i više energije - skoro duplo više.
So cut to now. We still have an energy crisis, and now we have a climate crisis as well. You know, so humans generate about 12 trillion watts, or 12 terawatts, from fossil fuels. And Al Gore has spoken to why we need to hit one of these targets, and in reality what that means is in the next 30 to 40 years, we have to make 10 trillion watts or more of new clean energy somehow. Wind is the second-largest renewable resource after solar: 3600 terawatts, more than enough to supply humanity 200 times over. The majority of it is in the higher altitudes, above 300 feet, where we don't have a technology as yet to get there.
Danas još imamo energetsku krizu i sada imamo i klimatsku krizu. Znate, ljudi naprave oko 12 triliona vati ili 12 teravati iz fosilnih goriva. Al Gor je pričao zašto treba da krenemo prema jednom od ovih ciljeva, a to zapravo znači da u sledećih 30 do 40 godina moramo nekako da napravimo najmanje 10 triliona vati čiste energije. Vetar je drugi najveći obnovljivi izvor energije posle Sunca: 3 600 teravati, više nego što je dovoljno da 200 puta snabde čovečanstvo. Većina je na većim visinama, iznad 90 metara, za koje još uvek nemamo tehnologiju.
So this is the dawn of the new age of kites. This is our test site on Maui, flying across the sky. I'm now going to show you the first autonomous generation of power by every child's favorite plaything. As you can tell, you need to be a robot to fly this thing for thousands of hours. It makes you a little nauseous. And here we're actually generating about 10 kilowatts -- so, enough to power probably five United States households -- with a kite not much larger than this piano. And the real significant thing here is we're developing the control systems, as did the Wright brothers, that would enable sustained, long-duration flight. And it doesn't hurt to do it in a location like this either.
Dakle ovo je početak novog doba zmajeva. Ovo je naš pogon za testiranje u Mauiju, gde zmaj leti na nebu. Sada ću vam pokazati prvo samostalno stvaranje energije od strane omiljene dečje igračke. Kao što vidite, morate biti robot da biste ovim upravljali hiljadama sati. Pomalo vam je muka. Ovde zapravo stvaramo oko 10 kilovata - dovoljno da se snabde verovatno oko 5 američkih domaćinstava - sa zmajem koji nije veći od ovog klavira. Zaista bitna stvar ovde je da poput braće Rajt, stvaramo sisteme za kontrolisanje koji će omogućiti održiv, dugotrajan let. A to nije loše raditi ni na ovakvoj lokaciji.
So this is the equivalent for a kite flier of peeing in the snow -- that's tracing your name in the sky.
Za letača zmaja ovo je nešto poput uriniranja u snegu - to je ispisivanje svog imena na nebu.
And this is where we're actually going. So we're beyond the 12-second steps. And we're working towards megawatt-scale machines that fly at 2000 feet and generate tons of clean electricity.
Zapravo idemo u ovom pravcu. Prevazišli smo letove od 12 sekundi. Radimo na mašinama velikih razmera koje će leteti na 600 metara visine i praviti puno čiste energije.
So you ask, how big are those machines? Well, this paper plane would be maybe a -- oop! That would be enough to power your cell phone. Your Cessna would be 230 killowatts. If you'd loan me your Gulfstream, I'll rip its wings off and generate you a megawatt. If you give me a 747, I'll make six megawatts, which is more than the largest wind turbines today. And the Spruce Goose would be a 15-megawatt wing.
Pitate, koliko su velike te mašine? Pa ovaj papirni avion bi možda - ups! To bi bilo dosta da napaja vaš mobilni. Cesna bi bila 230 kilovata. Da mi pozajmite Gulfstream, otkinuo bih mu krila i napravio megavat. Da mi date Boing 747, napravio bih 6 megavata, što je više od najvećih turbina današnjeg doba. A Spruce Goose bi bilo krilo od 15 megavata.
So that is audacious, you say. I agree. But audacious is what has happened many times before in history. This is a refrigerator factory, churning out airplanes for World War II. Prior to World War II, they were making 1000 planes a year. By 1945, they were making 100,000. With this factory and 100,000 planes a year, we could make all of America's electricity in about 10 years.
Rekli biste da je to odvažno. Složio bih se. Ali odvažne stvari su se dešavale dosta puta u istoriji. Ovo je fabrika frižidera, koja pravi avione za Drugi svetski rat. Pre Drugog svetskog rata, pravili su 1 000 aviona godišnje. Do 1945., pravili su 100 hiljada. Sa ovom fabrikom i 100 hiljada aviona godišnje, mogli bismo napraviti svu struju Amerike za 10 godina.
So really this is a story about the audacious plans of young people with these dreams. There are many of us. I am lucky enough to work with 30 of them. And I think we need to support all of the dreams of the kids out there doing these crazy things. Thank you. (Applause)
Tako da je ovo priča o odvažnim planovima mladih ljudi koji imaju ove snove. Puno nas je. Imam sreće da radim sa 30 njih. I mislim da treba da podržimo sve snove klinaca koji rade ove lude stvari. Hvala vam. (Aplauz)