need help with vars in thrust equation

koschur@graffiti.net

I am trying to calculate thrust from a rotor in the simplest way. I am using the general equation:

(explained in much more detail at

http://www.natefisher.com/rotorthrust.html)

My problem is that when I increase the pitch of the blade, the total thrust amount always decreases, and when I increase the lift-curve slope value, the thrust always seems to increase. Common sense seems to tell me that this would be the opposite case I should be getting. Anyone out there know what may cause this? I tried to make it as easy as possible to read what I am doing at the website above.

http://www.natefisher.com/rotorthrust.html

also, is the relative pitch (p in the equation) in radians or degrees, i assumed degrees.

thanks,
nate

koschur@graffiti.net