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wind energy site
|
13
comments (13 topical)
Re: wind energy site
(
3.00 / 0
) (
#5
)
by
finnsawyer
on Fri Dec 16, 2005 at 09:22:53 AM MST
Seeing as how I like to see things presented in a coherent and logical manner rather than blather, I'd just like to point out that there is a fundamental problem with longer propellers. It's called the sound barrier. The tip of the propeller can be moving so fast that it reaches the speed of sound causing a shock wave and a great loss of effectiveness. This has the effect of limiting the speed of propeller driven air planes. The longer the propeller the lower the top speed.
GeoM
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Parent
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Re: wind energy site
(
3.00 / 0
) (
#6
)
by
ghurd
on Fri Dec 16, 2005 at 10:40:44 AM MST
And the higher the tip speed, the higher the drag losses.
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Parent
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Re: wind energy site
(
3.00 / 0
) (
#7
)
by
IntegEner
on Sun Dec 18, 2005 at 07:34:04 AM MST
I suppose it is that birds don't know that their long wings also make fine propellers. Critical comments also need to watch the quality of their commentary.
Knucks
www.integener.com
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Parent
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Re: wind energy site
(
3.00 / 0
) (
#8
)
by
finnsawyer
on Mon Dec 19, 2005 at 09:40:50 AM MST
Yes, and birds don't fly all that fast, unless they are acting like dive bombers, in which case their wings are not propellering. And your point was? Personally, I am not interested in the aerodynamics of birds. If you are, I suggest you find another site. As far as responding to my "critical comments", I would appreciate it if you would stick to the subject and provide a rational, fact filled rebuttal. As far as quality is concerned, I have not seen one useful piece of information arise from your comments.
GeoM
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Parent
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Re: wind energy site
(
3.00 / 0
) (
#9
)
by
IntegEner
on Mon Dec 19, 2005 at 06:00:20 PM MST
Sorry that I am such a knucklehead but, after all, what can you expect from someone with a nickname like -
Knucks
www.integener.com
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Parent
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Re: wind energy site
(
3.00 / 0
) (
#10
)
by
finnsawyer
on Wed Dec 21, 2005 at 09:21:32 AM MST
No one is impugning your intelligence. What I take issue with is your attempt to sell people bad information. You need to give them something of value in return for their money. Since yesterday was a slow day, I Googled "Newtonian Principle"- aerodynamics. It returned your site plus postings on this site. After reviewing the threads the following occurred to me: An airplane wing is dragged through the air. If we eliminate the prop wash and drag it through still air, a pressure wave builds up along the leading edge. This results in air moving faster over the top surface than over the bottom causing lift. This is the "classical" view. My question is this: Since the air is at rest initially, where does the oblique flow of air that you need for your model come from? The only thing disturbing the air is the wing. How could this cause a "wind" to appear out of nowhere at exactly the correct angle so it bounces off in the right way to give lift?
GeoM
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Parent
]
Re: wind energy site
(
3.00 / 0
) (
#11
)
by
IntegEner
on Thu Dec 22, 2005 at 08:58:37 AM MST
There is nothing wrong with a little learning as many such as yourself wish to do. My website is a good place to find some answers. If it proves tedious, then I recommend following up on what I have done. Go to this link, the
Penney Lynn Wind Toys
store ("the wind is our friend"), to see the kites and decorative wind spinners there, very popular even nationwide over the Internet. My 8' tall verticals rotator is located out in front of this store in Littlerock, California, pleasing everyone with its easy-start rotational motion and newfound ability to light a few small lights. The energy is secondary to its attractiveness to homeowners as something that adds to the value of the home. Price: $99.95 + shipping as a kit with a separate order necessary for the 3.5" diameter axial flux generator mounted on it (mine was $30 + shipping from Ed Lenz and others are available). Buy one for yourself and put it together. See how it performs and become part of wind energy. This price is quite low. Take a look at the durable SolarMax cloth toy whirligigs on the website and their quality. Let's get these wind devices moving out to those here who offer us their comments such as yourself and the rest of the public! It is the aviators in these discussions who are so exasperatingly reluctant to see their "coefficients of this and that" and "NACA profiles" so lightly treated. Do you want to see some pics of the IntegEner verticals rotator turning in the wind at its location in front of this retail store?
Anthony "The Knucks" Chessick
www.integener.com
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Re: wind energy site
(
3.00 / 0
) (
#12
)
by
IntegEner
on Thu Dec 22, 2005 at 09:05:02 AM MST
I see the link was done wrong. Using cut and paste, it is just www.wind-toys-online.com . Thanks for everyone's patience. Kncks, www.integener.com
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Re: wind energy site
(
3.00 / 0
) (
#13
)
by
finnsawyer
on Thu Dec 22, 2005 at 09:26:24 AM MST
Not interested in toys. End of story. Have a merry Christmas!
GeoM
[
Parent
]
wind energy site
|
13
comments (13 topical)
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