number of blades vs vibration, efficiency, cost

[Tongichi]

Hi everyone,

I'm studying the relationship of different blade numbers that influence vibration, propeller efficiency and cost of propeller.

Could you please make a comment on the logic of this such issue. or kindly suggest me some papers or references which this topic involved in.

I'm new here, nice to see you guys

Tongichi

[eyschulman]

Look up Dave Gerr the propeller book- More blades tend to be smoother and can make up for shortfall in diameter. Less blades more efficient. A big two blade prop under right conditions most efficient.

[Tongichi]

Thanks for your reply, I will start work on Dave Gerr