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How Hard is the Human Powered Helicopter?

Posted June 25, 2012 1:53 PM

From Wired Top Stories:

Whirling of arms and legs is all that's required to hover in a new lightweight helicopter. But as Dot Physics blogger Rhett Allain shows with physics equations, getting the contraption off the ground is harder than it looks.

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#1

Re: How Hard is the Human Powered Helicopter?

06/25/2012 2:38 PM

Since so many laws are pushed to the limits or broken, might as well use an overunity device.

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#2

Re: How Hard is the Human Powered Helicopter?

06/25/2012 11:51 PM

This can only accomplished with lighter stronger materials...that can only be accomplished with more money and/or time....The prize should reflect that...Raise it times 20...

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#3

Re: How Hard is the Human Powered Helicopter?

06/27/2012 3:34 AM

Calculation for human-copter

Well- I have no formal scientific education, but this topic- aerodynamic lift bothered me very much. So I read many articles about it.

And I have done experiments by my own.

.As I finished my experiments I summarized all the data and I wrote down my calculations, I thought to mail them to prof. Allen Epstein from MIT, whom by chance it happened me to meet him.

Before I clicked send-I googled once more to find what scientists say about BERNOULLI LIFT, and I came across a paper written by Johnson, it is a long article supported with equations, calculations and formulas.

Bottom line-Dr. Johnson says the same as I do:

Not all the aerodynamic lift is attributed to "reaction lift"-at low airspeed Bernoulli's lift plays an important role.

Bernoullli's lift requires much less energy, this is the reason for the special profile of a soaring glider's wing.

I will not bother you with all the calculations, but let me tell you that Bernoulli's lift will have an important impact on the Humancopter's flight ability!

If you google, you'll find this article:

How Airplanes Fly

Aerodynamic Lift, Bernoulli Effect, Reaction Lift

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#4

Re: How Hard is the Human Powered Helicopter?

06/30/2012 11:02 AM

What a waste of time and money, once they are above the ground effect, much larger inputs of power are needed to go higher.....

Also, there is no possibility of being able to take a break for a minute or so as in a glider for example.....

I would guess that a helicopter is the least efficient form of flying that there is as well.....

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#5
In reply to #4

Re: How Hard is the Human Powered Helicopter?

06/30/2012 3:51 PM

I don't know about the waste of money, but as far as time goes I do believe this was a first.

And as far as taking a break, a minute may be out of the question. But if they could get high enough, wouldn't the thing auto-gyrate?

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#7
In reply to #5

Re: How Hard is the Human Powered Helicopter?

07/01/2012 3:33 PM

Autogyration takes place without power input to the wing (blades), it is due to the power of the pusher/puller engine and prop.....an immediate loss of altitude happens when the motor to the prop is turned off.....

So why did they build a helicopter and not an autogiro? Probably due to a lack of efficiency.....guessing only!

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#6
In reply to #4

Re: How Hard is the Human Powered Helicopter?

07/01/2012 8:19 AM

'Pedal faster Winston.'

aka

http://www.subzin.com/s/Hey,+Winston!+Pedal+faster

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#8

Re: How Hard is the Human Powered Helicopter?

07/02/2012 9:58 AM

Who would not only purchase this more or less even fly in one of these

IMO, Just because someone took the time to put the idea on CADD, does not mean it performs.

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