request]saw this meme, how fast does the propeller blade have to

Solved A wind farm generator uses a two-bladed propeller

An amazing hat : r/Smallant

Basic Propeller Info

What would happen if a helicopter just kept going upwards until it couldn't anymore? At what point/for what reason would it stop going up? : r/askscience

Question about propellers - General Discussion - IL-2 Sturmovik Forum

If you had an electric propeller attached to a stick, how fast would it need to go in order for you to fly? - Quora

Why are ship propellers in the back? - Quora

REQUEST] How far could a wind turbine blade toss a 200lb projectile? : r/theydidthemath

Aerosoft Twin otter has an official release date now - January 19 : r/MicrosoftFlightSim

ELI5: Why do helicopters made a thuding noise, when propeller-driven planes have a single droning sound? : r/explainlikeimfive