----- Original Message -----
To: Distribution List
Sent: Tuesday, June 08, 2010 7:40 AM
Subject: Re: IntegEner-W MicroRotator 07 Kit
----- Original Message -----
To: Distribution List
Sent: Monday, June 07, 2010 6:47 AM
Subject: Re: IntegEner-W MicroRotator 07
Kit
A larger issue exists here. Even the horizontals are
involved in that blade efficiencies per unit blade length have never been
studied well. Now with blades on the big turbines that are reaching limits on
length this question may become more important. Already some funding has been
made to a company called "PAX Streamline" ......... and work with
Georgia Tech University on the East Coast on a $3 million dollar U.S.
Department of Energy grant under ARPA-E to study vents that are added to
blades that create blowing and suction to enhance aerodynamic performance.
Their "fundamental scientific discovery" with its "game changing implications"
may be hype to some degree but it addresses this issue directly. See the .pdf
file PAXStreamline DOE Award.
It is not even necessary to go to these lengths. In
aviation it is known that airfoil leading edge slats, profile slots, and
trailing edge flaps can make wings perform better when properly put to use. It
is without a doubt that these features can be applied to wind energy as well
where their induced drag disadvantages do not exist. The .pdf document on this
study is attached for your files. Copied in below is a quote from our own
files on this:
"A note should be made here in regard to possible use by
the wind industry of high lift device enhancements to the blades of wind
turbines, mentioned in aviation aerodynamics texts such as Abbott and von
Doenhoff as consisting of, for example, leading edge slats, airfoil slots, and
trailing edge flaps. These would be understood to go beyond more ordinary
features such as full or partial airfoil pitching and the use of ailerons on
trailing edges. It is recognized in aviation that such devices normally come
with an induced drag penalty, something which would be absent in wind energy,
perhaps lending more argument in favor of them than is generally realized. If
anything, this might be a direction that future blade design could take of
benefit."
It should be clear by now that the MicroRotator 07
blades are in fact a good example of such high lift enhancements,
incorporating a gap that may also be called an "airfoil slot".
................................
I urge you to keep this effort, which you proposed,
active and not let it drop.
----- Original Message -----
Sent: Wednesday, June 02, 2010 8:11
AM
Subject: Re: IntegEner-W MicroRotator
07 Kit
If so, they should know that I (and probably others
who have staked claims) would be generous in sharing ownership of any of
these ideas. Patents have been granted, the patent numbers in my files,
though of more antecedent conceptions. IntegEner-W holds only informal,
nonbinding arrangements with others following this work.
The metal fabricating shop in Bakersfield who found it
possible to make these blades in accordance with the drawing layout and
within reasonable costs has given this project some new life. All these
details are available, including the blades themselves, in
quantity.
The advances represented can be categorized under
"asymmetric airfoils", "exceeding thinness per chord",
"Coanda Effect tolerance of surface irregularities", and
"Reynolds Number control via flow gap". A departure is being made
from the more classical model or "Joukowski" type of airfoil.
A rough math model has been already coded starting
from nothing using the BASIC language that makes use of the stream function,
y(x,y), well known in fluid dynamics theory. See the material on
the IntegEner-W website home
page.
I make no claims that vertical axis is a superior
geometry or even one comparable in efficiency to horizontal axis in
generating wind energy but may have merit in some applications. Occasional,
limited funding and other help for the verticals has been made available by
government labs and private industry is being counted on to do more if
anything can be gained.
A few names have been copied in blind to this note for
those who may wish to remain unidentified.
----- Original Message -----
Sent: Sunday, May 30, 2010 4:56
PM
Subject: RE: IntegEner-W MicroRotator
07 Kit
Tony: There is a possibility
that one of the Universities might be interested in doing some flow models
of your air foils. No promises of any type made.
Questions:
Are there any patents or IP constraints that need
to be observed?
- Are you willing/able to provide dimensional data
or formulas that can be used in computer
models?
- Any business concerns that I should be aware
of?
This is just an initial
inquiry, I can’t say that it will come to
anything.
From:
Tony Chessick [mailto:tony.chessick@integener.com]
Sent: Saturday, May 29, 2010 7:08
AM
Subject: Re:
IntegEner-W MicroRotator 07 Kit
If you have any questions
about your order shipped on May 11, please contact us for answers. Here
are a few pics of how these turbines have been
constructed:
The pic on the right shows a
stacked arrangement of two two bladed rotors oriented at right angles to
each other above and below. This can be continued upwards for four or more
stacks. (The distortion evident in the pic is due to the high speed motion
as seen by the digital camera.) Be sure to use at least a 1 and 1/2"
diameter shaft for such designs.
As mentioned before and
repeated here, the MicroRotator 07 starts up and runs on the slightest of
breezes unlike many of this axis design.
Another order similar to yours
of these .030" thick aircraft alloy durable blades was just sent out to a
customer in Montana and we can put you in touch with
each other for your benefit if you wish. Consignments are still being
taken for further orders.
Tony Chessick
IntegEner-W
Tehachapi, CA
http://www.integener.com last update:
5/21/2010
----- Original Message -----
Subject:
Re: IntegEner-W MicroRotator 07 Kit
I appreciate your offer of three rotor
assemblies. Is there a date planned for these to
ship?
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