In a copter, Is there a formula for how much lift is generated by a prop, or are there normally stats for how much upwards thrust is generated for a prop at a certain RPM range? or is this just trial and error.
Now that I understand motors (or at least I think I do), I know nothing about props which go onto those motors?
Replies
Take a look at eCalc:
http://www.ecalc.ch/xcoptercalc_e.htm?ecalc
While it does not show you its formulas, it will collect lift for a given setup.
At the grave risk of self-adulation, I recommend this thread, which covers the basics pretty well:
DIYD Thread on Lifting Propeller Aerodynamics
The raw data on most of the common hobby props can be found here:
http://www.ae.illinois.edu/m-selig/props/propDB.html
Try this for all things about model aircraft airfoils http://www.mh-aerotools.de/airfoils/ including a section about propellors.
Peter