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Noise reducing props!

by IronAwe, published

Noise reducing props! by IronAwe Jan 20, 2013

Description

So I stumbled upon this article:
geekologie.com/2010/02/impressive-building-a-silent-h.php
and of course wondered if this could be done on a smaller scale. So I made some!
PLEASE try these out for me, I will work on them and perfect them if they reduce noise even the slightest. 9x4.5 with 6mm centre hole.
Thanks guys!

Recent Comments

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Everyone is printing these with support correct. I think im gonna print some out. I am printing some 8040's right now. Looks like these will come in handy

Dude!! That's awesome!!!! Don't suppose you could post a pic of them in the "made" section? And obviously any more videos would be sweet!! Thanks for trying them out man, I'm right chuffed!!

I printed a set of the 8 inch props and flew my quadcopter with them. The performance was comparable to commercial props and it did seem like the quad sounded less like an angry swarm of bees than with conventional propellors.

Here's a video of a super quick indoor test: http://www.youtube.com/watch?v...

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Instructions

Put 'em on and fly!!!

Comments

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hedchange on Jul 22, 2013 said:

Everyone is printing these with support correct. I think im gonna print some out. I am printing some 8040's right now. Looks like these will come in handy

ttsalo on Jul 15, 2013 said:

I printed a set of the 8 inch props and flew my quadcopter with them. The performance was comparable to commercial props and it did seem like the quad sounded less like an angry swarm of bees than with conventional propellors.

Here's a video of a super quick indoor test: http://www.youtube.com/watch?v...

IronAwe on Jul 15, 2013 said:

Dude!! That's awesome!!!! Don't suppose you could post a pic of them in the "made" section? And obviously any more videos would be sweet!! Thanks for trying them out man, I'm right chuffed!!

Odd13 on Jan 25, 2013 said:

I am busting to see how these go. Has anyone printed any props and had success flying?

Project on Jan 24, 2013 said:

Ill print a pair out when i get a chance on the weekend. though I may have to scale them down as I have an UP! Plus printer, 140-140-135mm build space

CJ

IronAwe on Jan 25, 2013 said:

oh bugger, no it wont. still too big

IronAwe on Jan 24, 2013 said:

OK, I just put an 8inch version up, which should fit in your build area. Keep me posted!

IronAwe on Jan 24, 2013 said:

Hmmm, if you scale it you'll shrink the centre hole, I'll try and get a smaller pair up for you before the weekend.

mechadense on Jan 24, 2013 said:

For a diagnostic spectral sound comparison you need to design identical ones just without the arrow tips.

ThePelton on Jan 23, 2013 said:

Owls can fly quietly because they have fuzzy edges on their feathers that break the wind up.

destroyer2012 on Jan 21, 2013 said:

I'm pretty sure that A) the same sound issues that affect a helicopter don't affect a quad due to subsonic tip velocity and B) in the design these are supposed to actually be vibrated up and down by motors to break up vortices. If you notice the sound clips on that site the only sound that is decreased is the loud supersonic "clapping" sound that helicopters make, and that toy helicopters decidedly don't. That said these look awesome and if I had a quad I would totally try these out :)

IronAwe on Jan 21, 2013 said:

Haha, I've been waiting for this comment. Yeah I know dude, it's all just a bit of fun :)
Having said that, the tips on this blade should still make it more efficient, even if they do nothing for noise. You can read about swept rotor tips and other rotor tip designs here:
http://www.sciencedirect.com/s...
Bare minimum they'll make your quaddie look bad ass.

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