How to calculate static pressure for propeller thrust

[Gibbon]

Hi, I am trying to calculate as best but simply as i can the (approx) thrust from a propeller..

and my research shows i have to calculate:

prop velocity(pv) = pitch * rpm

with pv i can then use Bernoulli's equation to calulate the pressure and multiply it by the propeller surface area to give me thrust.

So ... pt0 = p0 + .5 * r * pv ^2

that equation should give me thrust.. But. p0 is apparently "Static Pressure".. and i cannot for the life of me work out how to calculate static pressure.

Hope you can help, my maths isn't all upto scratch so be kind! :)

Thanks
Andy

 

[russ_watters]

In an open airflow situation (no ducting), there is no static pressure.