There is always the 30 page booklet on the Lift Principle mentioned on my website, offered specially right here and right now for free upon sending an e-mail message with an address for the mailing of it, even outside the States. (The address information is deleted from our files upon completion of the shipment.) It is a good start in seeing the Newtonian Principle as described in some detail and really quite worth while. No need to click on the PayPal button but send off your message soon.
See comments made elsewhere on this thread and also on the recent "How to avoid stalling" thread for more detail. It is not so difficult to understand that it is airflow deflection and only airflow deflection that creates a driving force on a blade moving faster than the wind and made amenable to calculation with straightforward equations such as the Bent Air Law (as is described in some detail in the booklet mentioned above).
Does anyone need to see how I clamp the aluminum sheet metal pieces from the 4 inch (100 mm.) wide rolls of roof flashing in the hardware store to a counter edge corner and back it with a 5/16" diameter wooden dowel in order to start the bending of the leading edge? It isn't fair (and often quite persnickety) to tell me that I am doing something wrong when what I am doing works so well!
Thin blades for lift-based rotors rule!
Anthony C. IntegEner-W www.integener.com [ Parent ]
I do like the look of those.
However;
I made some PVC blades that spun like crazy in the slightest breeze, very fast and smooth. Right up until you attempted to extract any power.
I see you only have these on a "bearing". Have you tried pulling any power from them yet?
Cheers.
TomW
Without fools, you could not look intelligent. There is no knowledge without questions.
[ Parent ]
Within the context of 3 foot diameter blades near ground level the above horizontals rotor certainly outperforms the well known 22" diameter decorative old time farm windmill rotors we often see here in the yards of homes with their 12 blades. I think all this speaks for itself, something that satisfies small needs for power that people find easy and inexpensive to buy.
Anthony C. IntegEner-W www.integener.com[ Parent ]
