Atlas Human-Powered Helicopter - AHS Sikorsky Prize Flight

On June 13th, 2013, the AeroVelo Atlas Human-Powered Helicopter captured the long standing AHS Sikorsky Prize with a flight lasting 64.1 seconds and reaching an altitude of 3.3 metres. Visit www.aerovelo.com for more details.
The competition was initially opened in 1980, and over the course of the 33 years that followed, dozens of teams from around the world pushed the limits of existing technology in pursuit of this once-thought-to-be impossible goal. This video is a compilation of footage from the record flight, as well as previous test flights. For uncut videos and official documentation of the record flight visit www.aerovelo.com and the AeroVelo KZbin Channel.
Original Music by Nick Martel, Dan Gauthier and Ray Balberman
Footage by AeroVelo and Martin Turner of Visiblize.com

[@apexflash]

it is truly mind-blowing that such seemingly slow rotations are able to provide the lift needed! absolutely amazing, great job!

[@GeorgeOu]

This is how you hover ~250 lbs on 1 horsepower. By moving a lot of air a little rather than moving a little air a lot. That means you need massive rotors relative to the weight. Typical helicopter rotor (much smaller) will need around 25 horsepower to lift 250 lbs. The Martin "Jetpack" (really a piston powered ducted fan) needs 200 horsepower to hover 535 lbs.

[@jonathanberry9502]

hmmm, maybe it is very plausible then to lift payloads with ion wind (lifter) type methods. There are patents.

[@GeorgeOu]

@H D It actually has more to do with momentum transfer. Small objects moving fast have far less momentum than large object with same energy but moving slow. Kinetic Energy = 1/2 Mass * Velocity * Velocity. Momentum = Mass * Velocity.

[@GeorgeOu]

@H D Momentum Transfer to Energy Expended Ratio is the primary factor. This is not an aerodynamics trick. You cannot design a small rotor with Superior aerodynamics to compensate for the size. The fundamental purpose of larger rotors is to move a lot of are slowly to maximize momentum transfer with a small amount of energy. It's so fundamental that there are fancy equations that can compute the theoretical lift to thrust ratio of a given disk size.

[@GeorgeOu]

@H D Interial is based on mass, but mass is based on the the number of air molecules you are disturbing. Larger rotors disturb a lot more molecules, but it disturbs each molecule less. This is why there is a rotor equation that calculates thrust-to-lift ratio based on the area of the rotor disk.

[@GeorgeOu]

@H D You know I'm a pretty patient guy, but you're wearing me thin with your antics and insults. So I'm going to patiently explain this one last time and after that I'm just going to ignore you if you keep this up. Mass and Density of Air is a fixed known quantity. There's a cylinder of air under a rotar determined by the area of the rotor disk. That entire cylinder of air is disturbed by the rotors. Big rotors means a big cylindar of air. More air molecules means more combined mass. If you can move 100 times the mass but with less velocity change, you get more momentum transfer even if you used the same energy and power. This is the fundamental physics of wing or rotor efficiency.

[@INTERNATIONALvids]

There are so many naive comments on this video because this video did a poor job describing the objectives and limits set up. Considering the constraints, this is quite an achievement that could not be met for decades.

[@simonforbes2453]

INTERNATIONALvids Exactly right. The genius of the Sikorsky prize was that it correctly posited that a human powered helicopter was feasible, but only barely. The many comments that the winning machine is 'not practical as a means of transport' miss the point entirely - gravity, human power output and air density haven't changed in thirty years, but patient development and advancing materials technology have closed the gap between a theoretical possibility and a genuine achievement.

[@VRagusila]

I agree as well. We are hoping that for our next project, bicycles that can reach 140+ km/h, to better explain the interesting technical aspects of the challenge, why we find it so fascinating, and what other teams in the world are doing to compete. I have 3 videos on the Aerovelo channel explaining some of the technical aspects of going so fast on human power, and I will put more out as soon as I am done my degree and have more time.

[@discbrakefan]

@Bpbrah Natrash Oh good, let's hear your expert analysis. I am very keen to hear about your understanding of cadence, power, thresholds, muscular endurance and angular momentum.

[@beingsentient]

The most obvious conclusion upon viewing this video is that birds are truly remarkable creatures. Picture the body of a bird in place of the bicyclist in this video and note the huge surface area taken up by the four rotors. That there is the proof. Even when you consider non-dimensional parameters. For instance, a hummingbird is exceedingly smaller than a human. But aren't there even very large birds that can fly vertically upwards for periods much longer than a minute? And of course this is a helicopter, not a rigid wing aircraft like the one McCready built and which was successfully flown by its human power plant across the English Channel. My advice is, Humans: don't even think about human powered helicopters/drones. You can be much better rewarded by focusing on human powered fixed wing aircraft.

[@yourmeister]

KZbin video: we made a research project that shows you can, in fact, hover solely on human power KZbin commenters with an engineering degree from Costco: this isn't practical, put a gasoline engine on it and make it 7 feet wide and make it glide and make it have a parachute and an ejection seat and make it hover like a flying delorean. And cover it with a full metal jacket. And then i will still not be interested because it will be expensive, noisy and mostly because i have no idea how to fly.

[@119davo]

12 seconds in you can see the staggering gear ratio of the crank. The pilot has to be producing 1000 watts of power here. This is like a sprint to the finish in a grand tour bike race. This is an amazing video.

[@GraveUypo]

sustaining 1000 watts for a minute is a fucking achievement. if that's true this guy is a biking god. i have very strong legs and in the gym i could only max the stationary bike's watt things for like 15 seconds before dying and not being able to stand up for the next hour. and it peaks at 750w (i was probably doing more than that though)

[@victorragusila7519]

he cant do 1kW per 1 minute. He can do it for shorter times, and he can break the helicopter with his peak power. For 1 minute, he had to do a bit more than 750W

[@AngelLestat2]

I wonder how much it is the propeller efficiency,

[@AshleyMorganAitken]

Yes, I believe he had to do greater than 1000 watts to get the height required then could relax :-) for the rest of the time (at least above 750W).

[@itsjustme4026]

@everyone, hey how do I explain that the ends of a propeller produces more thrust than the area close to the mid point?

[@CosbyKillah]

This deserves to be put in one of those "People are amazing" compilation videos.

[@nobrainQQ]

Guys, this project had a clear objective: 3 meters for 1 minute. And they nailed it. Its stupid to judge this project as if it was intended to operate as transportation... because if that was the case this people would have a quite different project. Nonsense: "uncontrolled", "can't deal with wind".

[@zdravkodren8599]

Such appropriate nickname, what you say it is true but you have missed the point. Yes, they never intended to operate it as a transportation, they built it to barely achieve needed goals and win F..prize, but they are those who bullcraping about how it is great, how they made a engineering miracle, a marvel ...... c´mon guys, you won a prize, be happy but do you really need to shit so much? I know it is all just selfcommercial but do it really need to be so shameless? Again it refuse to show comment below so I will copy it here: TO nobrain: I am not so jeallous but I cant stand so much shameles lies and bullcraping and if that does not deserve hate then I really do not know what does. If that is ok for you I really do not understand your criteria but you have that right. I do not negate that they achieved goal, ok they won a prize, but do they really need to glorify a crap, and what is more tragic is that people dont see it. Are you all so blind, or do not posses ability of logical thinking to see what they really built, instead all comments are like omg it flies, its a miracle, just showing how much knowledge you have about the theme. But to say that they nailed it is at least ridiculous.Nailing a goal would be if theiy flew 5 min of needed 1 min, and not 1min and, what, 4 sec or so, and if they flew maybe 4 or 10 meters of needed 3, and not 3,1 or something like that. And that what it stood unanswered for the recent "high tech" 30 years does not mean that it was a hell of a challenge but that no one who would be competent to answer it either didnt know about it (I found about it this winter of this "long" 30 years) or they simply didnt give a fu... about it because they saw that it do not have some practical use. So who was in challenge, some high school pupils, some students, some exibitionists and some charlatans, and in the end in this long 30 years someone have to got lucky. That is only thing they should glorify, a sheer luck. That is just truth, and if you or someone else cant face it there is no problem in truth but somewhere else.

[@nobrainQQ]

zdravko dren Engineering solutions are usually measured by meeting the goals. They "barely achieved" because this was a hell of a challenge that stood unanswered for the recent high tech 30 years. Why you so jeallous? And no, I'm not related to them. I'm just here wasting my time against YT hate comments.

[@LaurieWilliams-lk8fc]

nobrainQQ Well said. "I'm just here wasting my time against YT hate comments" - yes, and what a pity that these moronic unthinking hateful fools speak the garbage that is in their minds and waste the time and effort of rational people like you and me.

[@LaurieWilliams-lk8fc]

nobrainQQ The only thing wrong with this is the hideous loud music. Why people have an obsession with ruining perfectly good videos with such intrusive junk I will never know.

[@unusedName1]

LaurieWilliams5066 agree

[@StudioAnnLe]

Wow! Incredible! It's still beyond me how pedaling could keep such a massive structure afloat but it looks like alot of ultra light carbons and other sciency things that is beyond my level of comprehension.

[@Yousefix]

k

[@pimoussesim]

huge blades... can support weight at low speed..

[@aguywhodoesstuff1116]

@@0neofthegreatest start it at 100 ft above the ground coward

[@dr.spectre9697]

Leonardo Da Vinci would be proud!

[@stc2828]

Lol the design looks rudimentary but the material used in this thing is the pinnacle of human technology!

[@randomguy3281]

@@stc2828 Looks can be deceiving. I can only imagine just how long it took to design that, being able to support him and it's self, transfer the energy from the peddles to each rotter evenly, and being so incredibly light. There is nothing simple about the design, every single inch from the airfoil shape, support structure, and guide wire runs, must have been gone over and redesigned a few times to optimize everything.

[@stc2828]

@@randomguy3281 There is no way to make anything close to this with 16th-century sticks and strings.

[@roblangada4516]

@@stc2828 A paper airplane is a simple design, this definitely isn't. I agree with your point about styrofoam, superglue, and carbon fiber being miracles of our modern age, though.

[@sparky844]

*Da Vinky?* O_O

[@calummacaskill1836]

'Sir! What gave you the confidence to keep trying to break the record?' 'Easy: my huge fans!'

[@javmar86]

you sir go up !

[@chpnlzt]

I HAVE CHILLS ON MY WHOLE BODY, NEVER THOUGHT I'D SEE THIS IN MY LIFETIME, BRAVO TO THE MAX !!! THAT MAY BE THE COOLEST THING I'VE EVER SEEN !!!

[@Shadowboost]

Is it strange that I tear up at this? This is the pinnacle of human ability.

[@martinn.6082]

It's literally the first time a human has achieved flight without a motor or wind. It's an incredible achievement. This kind of turns us into birds :D

[@MrPilotStunts]

​@@martinn.6082not the first time. Human powered forward flight has been a thing for a long time. This is the first human powered hovering, which is impressive nonetheless.

[@martinn.6082]

@@MrPilotStunts really? With what apparatus? I'm not talking about gliding or using a parachute, but actual flight from pure human power.

[@mline250]

@@martinn.6082heaps of examples. Look into the Gossamer Condor, Condor 2 and Albatross for starters.

[@gaemr_o5147]

@@martinn.6082 en.wikipedia.org/wiki/Human-powered_aircraft did you bother googling?

[@winstonchurchill6418]

Great job guys! In some ways I feel like this is more of an accomplishment than man's first heavier than air flight.

[@Matyboi]

Damn, that must've been a pain to get those blades turning. I applaud the pilot :P

[@cgersch]

The part that seems most like magic is the way they transported the power from the crank all the way out to the rotors using nothing more than string.

[@01PLeasant]

In the forty-one years I've been on this planet that's one of the most amazing things I've seen. My Father was a helicopter pilot for twenty years. I'll bet he will be even more surprised than me.

[@leviterande]

This is never going be practical of course as they ofcourse also know. But, this is A GIAGANTIC STEP. I have goose pumps watching this. I have been following this for decades since the prize opening. Seeing this just reminds us that everything impossible is just for a certain length of time. Simply, extraordinary achievement.

[@souljaboy1293]

I don't really think it was meant to be practical, just one of those "do it because we can" type of things, testing the realm of engineering possibilities.

[@leviterande]

Soulja Boy thats what I said

[@MrBen527]

leviterande Awesome job!

[@Mr.Kinglion186]

Это великолепно! Ребята молодцы! Я горжусь, что живу с такими людьми на одной планете!

[@digigarb]

Wow! An incredible amount of work must have gone into this to finally succeed! Well done!

[@dr.spectre9697]

To everyone making stupid comments about how there are internal combustion engines that do this, well I heard of something called a bicycle, it seems to have caught on pretty well. There are certainly MANY MORE bicycles than motorcycles or scooters. Sikorsky paid $250,000 for the first to make a manmade helicopter, so obviously there is some marketability in this & some practical applications if they can further refine the technology.

[@EGarrett01]

I think you mean a man-POWERED helicopter. I'm pretty sure the man-made helicopter happened a long time ago, lol.

[@davidgreen5994]

+Dr. Spectre There is no actual practical application. The who point of this project was something else. In theory a self-propelled helicopter was feasible to build, but nearly impossible - it took 33 years in the end. What building one proofs, is that trough engineer and little steeps we can slowly reduce the gap between something being theoretically possible and actually building it. This helicopter is a symbol of human perseverance and creativity

[@SanctuaryGardenLiving]

Just listening on NPR...totally awesome, Congrats!!!

[@Xonatron]

Amazing.

[@JoseMiguelTellez]

Muchas felicidades a todos los componentes del equipo del AeroVelo Atlas. Inteligencia, dedicación, esfuerzo y mucha ilusión. Solo los mejores valores humanos nos pueden hacer volar.

[@nspcrazy1122]

How is that thing flying? The rotors are moving so slowly.

[@ilConiglioRuggente]

NSPcrazY112 The angular speed is low, but the baldes are very very long, and the linear speed at the extremities is very very high! Moreover, blades are very efficient when the vehicle is low on the ground, beacuse they're pushing air against the ground and not against some other air :)

[@weirjwerijrweurhuewhr588]

+NSPcrazY112 Same principle as computer fans. Larger ones can spin slower to move the same amount of air as smaller faster spinning ones.

[@yuriydeynekin4532]

+NSPcrazY112 "SO slowly"? - compared with WHAT? Let's recall what they taught us in high school: you may produce the same force (lift) by throwing every second small mass of air at high speed (by using small but fast propeller) or big mass - proportionally slowly. In any case the thrown air "steals" some energy in form of kinetic energy of the jet, and proving the same force a light quick jet steals more energy than a massive but slow one. Thus a wide slow jet is more economical than a compact&fast.

[@nspcrazy1122]

Yuriy Deynekin The point of quoting someone is to repeat what they said. I never put emphasis on, 'so'. Compared to a regular helicopter, what else? I dropped out of high school & while I probably do have this knowledge somewhere, I likely forgot lt because I don't need lt. I've only ever flown gas-powered helicopters.

[@Vorpal_Wit]

First I see Luigi Prina's flying boats, and now this. How wonderful this world can be and how fascinating it inhabitants.

[@cjmilla1]

Good thing this didn't happen 120 years ago or we would have a weird alternative future of flight

[@thumbthumb5998]

I was about to reply to a 7 year old comment, damn KZbin got old.

[@kennethhuff1]

angelevo, This is Kenneth Huff. While I appreciate your assertion that my project is more realistic (or practical), I would ask that everyone be respectful of the accomplishments of Team AeroVelo. The human powered helicopter that AeroVelo built does fly and it is very real. It is not fake. My teammates and I are trying to build a more practical human powered helicopter, but we have not flown yet and it is always important to be respectful of the accomplishments of others. Thanks, Kenneth Huff

[@neilgrahn]

I am so impressed by the amount of brains and work it took to make this happen. That team is beyond awesome.

[@Joose1111]

This gives me a chill every time I watch it!

[@gabbar51ngh]

I thought it was impossible. i know,a professional cyclist was cycling it and all they managed was hover in a closed place,but still it's amazing how energy from your own body allows you to fly with this helicopter. it's a pretty big thing,within a few years they will make the helicopter lighter,faster,smaller and flies with less power.

[@surpasslimits]

Saral Thakur He was not a professional cyclist. A real pro can put out more power, longer.

[@ArtilleryForLife]

surpasslimits So you could put out more wattage? He may not be a big pro but his foot position shows its not his first rodeo. Anyone who knows anything about cycling could tell you that.

[@gabbar51ngh]

surpasslimits hey,that's even more awesome. :D

[@johnnyboston9258]

Gordon Hale Anyone who knows anything about cycling could tell you this guy is not a professional cyclist.

[@ArtilleryForLife]

+Johnny Boston, as I said he may not be a big pro with all the popular sponsors but his foot positioning and the fact he can pedal that larger than normal front ring would be a clue he's been riding for some time. I've seen my share of talented local pro, semi pro and expert level riders and racers.

Simplemente fantástico, muy buen trabajo muchachos. un millón de felicitaciones desde Cali, Colombia!!

[@LaurieWilliams-lk8fc]

Wonderful achievement, but why the annoying intrusive music? What would have been wrong with just the sounds from the original video, as in the testing video?

[@caniwishformorewishes8654]

Really missed the opportunity to play Atlas Rise by Metallica

[@plaincombo6694]

This is great show of dedication and time-spent. Great job guys!

[@ExploringCabinsandMines]

Now turn it vertical in the wind and you have a super efficient windmill.

[@mmskills97]

That's is officielle the best video i have seen in KZbin.

[@HarryBalzak]

Simple mechanics win. The bicycle is still our most efficient form of transportation.

[@kvarnerinfoTV]

+Harry Balzak Yea, go travel by it around the world. Lets say vacation on other side of the world,. Would you get there and back in 2 weeks?

[@HarryBalzak]

Linus Magnus Dingus says, what?

[@kvarnerinfoTV]

Harry Balzak Pingus did his work.

[@JumpNationFilms]

+Linus Magnus most efficient, not fastest

[@kvarnerinfoTV]

***** Nope. How much resources would you need to go round the world trip with bycicle? Most efficient is plane. But for short distances yes I agree.

[@wanderwyde8294]

Браво!!!! Это огромное достижение! И я рад что ребята добились этого результата! Молодцы, конечно, немного завидно, НО надо отдать должное... Это прорыв! Хоть я из чужой вам страны я искренни горжусь вашим результатом!!! Вы заслужили похвалу)))

[@jimthompson2438]

Watching this filled me with joy and the reminder that anything is possible.

[@souravzzz]

What's up with the haters? They're probably just sad that they are too fat to do this.

[@hlmak2003]

Congratulations! I like their efforts and I like the music. Not just nice work but nice dream! Keep it up! Break your own record soon!

[@tps607]

Leonardo would be smiling

[@amiller7x7]

Amazing accomplishment and a great video. Congrats to the team (including those working on the earlier versions which led to this the successful one)!

[@thisthat42]

amazing! congratulation! Keep up the great work and beat the next "impossible" competition

[@BeaverTerror]

Congratulations for recognizing the need for a real cyclist, instead of the emaciated pilots used by Massachusetts.

[@MichaelSiano]

Great background music!

[@open768b]

amazing - if only da vinci was alive.

[@jackecheverri1015]

Innovation is something these people making negative remarks no nothing about. Great job and keep at it, America needs more young people doing exactly this!

[@blitzv10]

woundnt it work better with an engine instead ?

[@J0hnLedez]

would kinda defeat the purpose of "man powered"

[@Dissan9]

They could make fuel out of a man.

[@shadesofbluee]

SOYLENT GAS IS PEOPLE

[@carstekoch]

The whole point of that was to proof, that a man powered helicopter is possible.

[@blitzv10]

why not make a helicopter powered by pidgins instead now THAT would be impressive

[@RobertHart]

Just love these things, no real purpose other than a group of people cooperating to build and try something. This is what we need more in the world.

[@AnimationsN1]

pretty sure it's fake is you look closely enough you can see the strings

[@hejjegersej932]

It's not

[@justinjones5302]

was thinking the propellers were not going even close to the speed ot needed.

[@carstekoch]

you don't need much speed, if you have the right wing size and profile. The whole construction including the "pilot" only weighs 130 kg or 286,601 lb.

[@SpyderSeven]

They won 250,000 dollars with this thing. Pretty sure its not fake.

[@GraveUypo]

it's a joke..... flew higher over your heads than this helicopter did to the supporting staff.

[@AnonymousMachine]

You weren't asking for community input, you did an specific question to an answer only the creators behind this knows better than anyone else here.

[@hazard1024]

shit was 2.3m tops if that

[@PixelOfDeath]

Seriously?

[@AhsokaTanoTheWhite]

So? Flight is flight, how long was the first plane flight? 37 metres.

[@AlphabitS0up]

Rise by Nick Martel. It's not currently commercially available to my knowledge. He was one of the members of the Atlas team.

[@weedvideos420]

Try being DECADES late on this. HAHA WOW so stupid. They already have something called an INTERNAL COMBUSTION ENGINE that can make a helicopter fly for far longer and higher without even tiring yourself out. No patent officer in their right mind would allow you to patent this. -Top reddit comment

[@frostxr]

its for Science, you know, research and studies?

[@explosivewaffulz3585]

Mary Jane i love how the joke flew right over everyones heads. did nobody click read more?

[@runaway]

What an obvious and natural mix of vehicles! Genius!

[@CrazyC4nuck]

It isn't about the device itself, but the engineering, innovation, and drive behind it's construction, ultimately showing that what was largely deemed "impossible" to be in fact, possible.

[@fizzguts]

Brilliant! Must have been awesome to have been involved in such a triumph

[@rylandrc]

Good point. I guess I was trying to point out how the significant length of the wings made it so that the ends (of the wings) could have a plane like curvature that helped lift the vehicle instead of just pushing air.

[@schweet1198]

Interesting. I think they incorporated some ideas from the construction of F1D model planes. That's what the material of the blades looks like...

[@AlphabitS0up]

Rise by Nick Martel, one of the Aerovelo team members. It's not commercially available yet to my knowledge however.

[@richardparnell8402]

The power of the human mind, we cant fly but by adding weight, mass and size we can. this is awesome.

[@filfill5140]

maybe the fact that you barely see the very moment he's taking off. Apart from that, to see someone actually fly by his own power is awesome

[@ConradTapia]

That gear looks massive, obviously takes a lot to move props ( rotors?) that big! Awesome accomplishment!

[@Salda007]

Heavy? Are you kidding me? That entire thing is engineered to be absolutely as light as possible. The pilot weighs just about half again as much as the entire machine (80kg for the rider, vs. 55kg for the Atlas). Like byoffer said, it's not supposed to be practical. But as a demonstration of what's possible, it's amazing. Study the history of aeronautics for any length of time and you'll see that people have been trying to do this very thing for *centuries*. 'Grats, Todd and AeroVelo!

[@CrazyC4nuck]

From my first-hand experience, the unanimity of the judges' verdicts, and my personal knowledge of the team, it is fact that lift was achieved without assistance (i.e. pushing) from the ground crew.

[@cometkite]

It's not the device itself that matters, it's the engineering and technology that went into making it.

[@frackcha]

"Not sure I like the prospects of man-powered helicopters randomly dropping out of the sky and falling on my head." I admire your optimism :D

[@quifred]

Congratulations, guys! Incredible work

Excellent work, creative thinking and teamwork, a great experience and example that you can achieve great goals.

[@cindylovesclothes]

Great speech at the TEDxYouth Toronto Conference! Very inspiring!

[@funnezenuckl0rz]

Looks like the Wright brothers flying for the first time ^^

[@gunnerz102]

Am i like the only one who is in love with the soundtrack? i wish they would make a longer version

[@LeonGerardVandenberg]

Awesome Engineering and Cycling Power controlled output!

[@dfdadude]

Actually, if you look closely, it looks like the rotor starts rotation under the pilot's power, and his hand just follows it until it has some speed to prevent it from dropping onto the ground. He isn't really pushing it, more like he just keeps his hand on it as it starts to rotate.

[@Igor-qg5jc]

Excellent and colorful work!

[@rcbif101]

DUH! It's not the destination, it's the journey. Extremely unlikely there will ever be a human powered helicopter, but what these people learned in their accomplishment is invaluable.

[@emptyglo]

I can't believe somebody finally got that prize.... its incredible

[@robertedwards1240]

That's great video editing. You can't even see the wires.

[@vourkosdude]

Sometimes I really fail to understand people. A 33 year old competition is won, with obviously loads of work, with crazy materials and funding, and most of the comments are hateful instead of congratulatory. So to all of you haters out there, I really hope you make you own prototype and test it from the empire state building.

[@Madpegasusmax]

Uau ! Magnificent work . Can't wait for the outdoor version :D Keep up the good job :)

[@петрзадунайский]

Не верил ,что кто-то сможет это сделать. Молодцы ребята!

[@Funsizeish]

that looks so hard, especially since there's no friction for the bike and having to pedal that fast while feeling unbalanced can't be easy. props to that guy!

[@kundalinipsych]

Absolutely fantastic!

[@DeclanMulligan]

It was in1490 that Leonardo da Vinci dreamed a dream, and today you've made it come true !

[@swissroller]

Great Sound! From where?

[@MrLucidity]

Not only does the machine absolutely rock, but what really gets me about this; is the human intellect and perseverance that has gone into it! For 33 years smarter people than me have tried and failed, yet the culmination of that knowledge and the 'well, that didn't work, how else can we try?' attitude results in success... Human Awesome-ness at it's best, I reckon! And how much freaking fun would that shit be (if ya didn't have to peddle so hard)

[@Flopsaurus]

It's amazing that so many people think this is fake. It's real. The University of Maryland made one nearly identical to this, and I saw it fly with my own eyes.

[@CheckEmGG]

I just popped the hardest engineering bon3r right now... we get excited by these things...

[@AdamsWorld84]

You can clearly see the Massive gearing its set at!! thats like riding up a steap hill in top gear flat out for over a minute!!! that guy is insane. I'd like to see anyone give that a go, all the people saying negative crap... most people wouldn't even be abe to turn the pedals more than a few rotations. Awesome credit to these guys. A technical marvel to say the least.

[@cometkite]

Wow. I was not expecting to be so impressed.

[@sherifelsawwaf]

That worked much better than it looked like it would..

[@aperson380]

The rotors are like the wings of a glider. A high aspect ratio (that is the length to width ratio) gives more lift for less drag (that's why gliders have such long thin wings) and he has multiple rotors for stability.

[@ricomon35]

Yes. A larger wing AREA creates more lift per unit of velocity. That's why large aircraft fly slower, yet lift greater weight. Those blades are very much like glider wings, designed for lofting at slower speeds.

[@CrazyC4nuck]

To my knowledge, the Atlas team used only the power generated by the pilot to get off the ground. Your mention of "maybe the rule book..." prompted me to check the AHS prize guidelines: 4.1.3 The machine shall be powered and controlled by the crew during the entire flight, including accelerating the rotor up to takeoff speed.

[@VJVirinZy]

Atlas Human-Powered Helicopter - AHS Sikorsky Prize Flight คือการแข่งขัน เฮลิคอปเตอร์ในรูปแบบใช้พลังมนุษย์เพื่อค้างฟ้าให้นานที่สุดชิงชนะเลิศ จัดครั้งแรกในปี 1980 ตลอด 33 ปี มนุษย์แข่งขันต่างแสวงหาเทคโนโลยีหนึ่งเดียวที่เป็นไปได้ครองฟ้าให้ยาวนานที่สุด (ในวีดีโอนี้เป็นเที่ยวบินยาวนาน 64.1 วินาทีและสูง 3.3 เมตร)

[@copycarbon]

It does look amazing! Amazing how they took over the idea of the pull-string helicopter toy (you can clearly see the 4 strings parting from the bottom of the crankset) and to use a huge chainring to spin up the back wheel with the sole purpose of creating a gyroscope and stabilyze the cyclist. But I'm no expert, so I might be wrong.

[@matthewwhitt6060]

Awesome reply

[@BigRedOfficeChair]

Thank you, this is amazing. Hope stirs in me once more.

[@RyanZwelling]

Congratulations Todd! Wow!!!

[@TheArctanx]

that's a giant quadcopter. pretty cool the first human powered quadcopter

[@runsa]

Congrats guys!