fixed pitch propellor

[hekokimushi]

Hi,

I hope i have placed this under the correct section.
here we go:

i am unsure the difference in performance that a 2-blade and a 3-blade prop will make to an aircraft. e.g. in C-182, 2-blade less than 2 feet ground clearance where as 3-blade, significantly more clearance, dun have the length of the props.

but can anyone highlight the difference and trade offs using the 3-blade as to 2 blade?

thanks in advance

nelson