How to make a rotor blade

Hi,

I am from bangladesh. There are no industry or shop to buy light weight rotor blade in our country. I want to make good quality rotor blade. Do you have any idea? Can it be made modifying table fan or something like that?

Jahur

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relation between thrust and rpm

i wan t to know the relation between rpm and thrust. what is the formula or how can i calculate it.

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