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[Wired] Man Successfully Flies With Custom-Built Bird Wings - Page 19

post #181 of 192
Quote:
Originally Posted by quakermaas View Post

Real Albatross take off ( with strong head wind and small slope )

Notice the wings don't give a little flutter like the OP video.

Yeah, and it's not made of meat, bone, and feathers either.

I think you are taking the connection to a real bird too literally.

Saying a semi rigid kite/hang glider strapped to a man is different from a real albatross is a given.
Quote:
Originally Posted by guyladouche View Post

Yes, but can you use your upper body strength to push and pull something with great force, whilst keeping a planking position?

What are you talking about?

This guy isn't pushing or pulling anything with great force. The wing flapping is NOT man-powered. He's supposed to just have a motion sensor on the arms to coordinate when the wings are moved by the servos in the pack.
Quote:
Originally Posted by Stealth Pyros View Post

Lol... observe the moment that the shadow appears on the wing. He is not even in front of the wing yet.

But he is between the wing and the sun and the wing is translucent.
Quote:
Originally Posted by guyladouche View Post

Calm down and see what I'm saying. You still have to push/pull your arms while keeping a planking position--working against gravity. He keeps a *virtually perfect* planking position with no body flex or movement. I have no idea what his physical capabilities are in general, but that's an incredibly difficult thing to do without a harness/support holding a significant amount of your weight and still flap your arms up and down--regardless of whether you're moving wiimotes or whole wings.

Only during the last part of the ascent would he need to be doing this.

With mcuh of any air speed, that control surface between is legs would be supporting much of the weight of his lower body. he's also only flapping during ascent and very near landing. Most of the time it looks like he's simply gliding down.

Regardless, with any lower back strength at all, it's not hard to plank with your arms spread while supported only by your chest for all of 45-60 seconds.

There are a lot of iffy things about the video but someone able to physically do this is not rare enough to draw suspicion.
Quote:
Originally Posted by Mygaffer View Post

If you go read and the Gizmodo article, here:
http://gizmodo.com/5895235/cgi-experts-say-flying-bird-man-is-fake
you'll see confirmation that it is fake.

The video may well have been faked, but I'm more concerned with whether or not this device could fly in the manner depicted. It's more interesting.
Edited by Blameless - 3/23/12 at 11:52am
post #182 of 192
Quote:
Originally Posted by Blameless View Post

Only during the last part of the ascent would he need to be doing this.
With mcuh of any air speed, that control surface between is legs would be supporting much of the weight of his lower body. he's also only flapping during ascent and very near landing. Most of the time it looks like he's simply gliding down.
Regardless, with any lower back strength at all, it's not hard to plank with your arms spread while supported only by your chest for all of 45-60 seconds.
There are a lot of iffy things about the video but someone able to physically do this is not rare enough to draw suspicion.
The video may well have been faked, but I'm more concerned with whether or not this device could fly in the manner depicted. It's more interesting.

It was admitted to be a hoax.

Regardless, when you have a flapping contraption on your back, and you need to also move your arms up and down with motion sensors, how is it realistically possible to keep your body perfectly planked? With absolutely no body flex or core movement at all? I don't see how even the most athletic and strong people could accomplish that.
    
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post #183 of 192
Quote:
Originally Posted by Blameless View Post

The video may well have been faked, but I'm more concerned with whether or not this device could fly in the manner depicted. It's more interesting.

Waxing poetic and superficial argumentation will not prove the plausibility of this hoax.

You must first determine the lift coefficient based on the angle of attack of the airfoil he uses. From there you must determine other variables including the air speed and density, in addition to the total area of the airfoil surface. After that you can utilize the lift equation to determine total lift. Generally speaking, if L > Fg (weight) then flight in the crudest sense is "theoretically" possible. It would be better to say levitation.

This speaks nothing of movement in the x-direction given that lift is a y-vector. You must determine if his thrust is great enough to generate sufficient air flow to satisfy the lift requirement. In the most rudimentary terms, you need the sum of the thrust vector and drag vector to yield a great enough acceleration to satisfy the air speed necessary for lift.

I haven't laid out the secret of flight here. Much more is involved, but this is a pretty good starting point to determine the plausibility. Now if you fully believe that a man lying in a poor aerodynamic posture under thin, uneven airfoils that flap vertically up and down can theoretically fly, I implore you to work through the math. If I put large enough airfoils on anything it could theoretically generate lift..The sheer physics needed to dissect bird flight is staggering.

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post #184 of 192
To bad its fake, would have been cool. But also tiring at the same time lol.
    
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post #185 of 192
Quote:
Originally Posted by Oupavoc View Post

To bad its fake, would have been cool. But also tiring at the same time lol.

..
Quote:
Originally Posted by Blameless View Post

The wing flapping is NOT man-powered. He's supposed to just have a motion sensor on the arms to coordinate when the wings are moved by the servos in the pack.
post #186 of 192
Here's another amazing video that's just as fake as the flying man!

Stuff can be put under the water to make this effect happen.
Edited by lordikon - 3/23/12 at 4:17pm
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post #187 of 192
Come on guys, were we really this gullible? I mean, the video itself was somewhat of a laugh to begin with, I mean, it was pretty obvious it was fake. And if you didn't find it to be fake, you should of looked at their first video-- it was painfully obvious.
Edited by whitingnick - 3/23/12 at 4:16pm
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post #188 of 192
If you believe this you are an idiot.


Just look at video 13/14; it is obviously fake. However, 14/14 is semi-believable and they did a better job on that.
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post #189 of 192
Quote:
Originally Posted by Blameless View Post

Quote:
Originally Posted by quakermaas View Post

Real Albatross take off ( with strong head wind and small slope )

Notice the wings don't give a little flutter like the OP video.

Yeah, and it's not made of meat, bone, and feathers either.

I think you are taking the connection to a real bird too literally.

Saying a semi rigid kite/hang glider strapped to a man is different from a real albatross is a given.
 

 

I was pointing out that the Albatross had a strong head wind and a slight downhill gradient to help it get of the ground, bird man had neither and managed to climb to about 50 to 70 feet in around 12 seconds.

 

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post #190 of 192
Quote:
Originally Posted by lordikon View Post

Here's another amazing video that's just as fake as the flying man!Stuff can be put under the water to make this effect happen.
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