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[Eurocopter] Silent Helicopter Blade Design  

post #1 of 21
Thread Starter 
Wonder how long it will take for it to make it to cooling fans?

http://www.popsci.com/technology/art...ealth-choppers

Quote:
Eurocopter manages to pair down the blade-vortex interaction so thoroughly that the sound only reaches the whisper volume of 3 or 4 decibels.
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post #2 of 21
Are those black helicopters outside, or are those my Gentle Typhoons?
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post #3 of 21
Pretty sure it's a repost.
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post #4 of 21
Quote:
Originally Posted by ebolamonkey3 View Post
Pretty sure it's a repost.
I agree i remember reading about this rotor on here from a while ago... but I would wait for proof of it being a repost
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post #5 of 21
Thread Starter 
Meh, who cares. This thing is cool! I remember seeing a blade design with a little resemblance to it, I was hoping someone would post that here.

I've also seen some home fans with similar design, and I bought one like it, but the thing isn't much quieter if at all from regular designs.

What's the quietest 120mm with decent CMF right now?
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post #6 of 21
It cant be too silent the turbine engine is still plenty loud.
    
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post #7 of 21
Quote:
Originally Posted by ebolamonkey3 View Post
Pretty sure it's a repost.
Yeah, it is.

http://www.overclock.net/technology-...ign-makes.html
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post #8 of 21
Thread Starter 
Quote:
Originally Posted by Epitope View Post
It cant be too silent the turbine engine is still plenty loud.
Did you watch the comparison? Seems the blades on regular helis are way louder than the turbines, so this is a big leap for them.

Quote:
Originally Posted by eseb1 View Post
Thanks.
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post #9 of 21
This is great! Now if only it would be cheap to change out medivac helicopter rotors with these... (My college is near a hospital, and last time we had a bonfire there was a good 5 minutes where we couldn't talk due to the noise.. it would be more annoying if I had a house there)

Silent? Not yet. Still, the nosiest part of a helicopter is the rotors, so this is a HUGE improvement. Now, what if the government made electric helicopters with these :-p
post #10 of 21
thats not far off the shape of the blades on our navy merlin helo's. however ours are designed to give more lift with a shorter blade rather than lower sound
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Overclock.net › Forums › Industry News › Technology and Science News › [Eurocopter] Silent Helicopter Blade Design