Need help ID propeller

[bleaf]

We are doing a UAV project, and we need to design a propeller.

For now, we know we need 143 Newton of thrust, and 10hp of power.
And the cruise velocity is 50 km/h.
So what should be the diameter and pitch for the propeller?

Thanks!

[MWP_Lamar]

Your request is well beyond my capability. I am not an engineer.

Lamar