My intuition says most airflow comes from the center(and drops linearly towards the tip of the blade and picks up at the blade) i.e. there's no need to build a filter the size of the fan; you can cover "most" of the…
My intuition says most airflow comes from the center(and drops linearly towards the tip of the blade and picks up at the blade) i.e. there's no need to build a filter the size of the fan; you can cover "most" of the…