There's a guy on youtube that tests people's wacky CPU fan ideas. He tests like 4-6 of them an episode, and he has about 100 episodes. In theory any of them should work. There's a lot of ways to make a propeller.
This seems to be a propeller impelled-diffuser tri-brid design.
The outer most features of any propeller rotate at the highest velocity, and the edge can force air prependicular to the axis of rotation of the propeller.
The exterior housing of this design restricts the perpendicular movement this same air, and redirects it. However, impellers scoop up larger volumes of fluids, and force them through pressure restrictions to accelerate them. This design partially redirects horizontal movement, but expands to reduce/diffuse the pressure along the outermost edges.
The design has the immediate effect of diffusing the noise, at the expense of a small reduction in efficiency.
They look cool, but I'm not sure what the point was? I mean, they work, sure. But they're louder and slower than the "regular" props he flies at the end. So if the point was not to make a quieter prop, or a more efficient prop, then...? Just to see if it would work?
Log in
There's a guy on youtube that tests people's wacky CPU fan ideas. He tests like 4-6 of them an episode, and he has about 100 episodes. In theory any of them should work. There's a lot of ways to make a propeller.
I've liked some of those.
Blades (and the rear end of jets, and high speed train tunnel openings) with jagged edges cut the air not-at-once to make less noise.
This seems to be a propeller impelled-diffuser tri-brid design.
The outer most features of any propeller rotate at the highest velocity, and the edge can force air prependicular to the axis of rotation of the propeller.
The exterior housing of this design restricts the perpendicular movement this same air, and redirects it. However, impellers scoop up larger volumes of fluids, and force them through pressure restrictions to accelerate them. This design partially redirects horizontal movement, but expands to reduce/diffuse the pressure along the outermost edges.
The design has the immediate effect of diffusing the noise, at the expense of a small reduction in efficiency.
This is an interesting concept.
It's weird.
It works.
Great post.
They look cool, but I'm not sure what the point was? I mean, they work, sure. But they're louder and slower than the "regular" props he flies at the end. So if the point was not to make a quieter prop, or a more efficient prop, then...? Just to see if it would work?
I couldn't determine a speed difference from just watching, but I thought the typical propellers at the end were louder and whiny.
Neither iteration was quiet, but one was quieter than the other.