Article

2010-03-01 Science & Technology

Video: A Silent Rotor Blade Paves the Way for Super-Stealth Choppers

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Posted by Uncle Phester 2010-03-01 00:00|| || Front Page|| [3 views ] Top

#1 That WILL make a difference.

Posted by tipover 2010-03-01 01:06|| 2010-03-01 01:06|| Front Page Top

#2 Perhaps it should more correctly UNMANNED/REMOTELY PILOTED SUPER-STEALTH HELICOPTERS???

Posted by JosephMendiola 2010-03-01 01:23|| na 2010-03-01 01:23|| Front Page Top

#3 They must've wanted to call it Blue Thunder not Blue Edge.

Posted by Bright Pebbles 2010-03-01 05:54|| 2010-03-01 05:54|| Front Page Top

#4 Looks just like the wing of a frigate bird.

Posted by Grunter 2010-03-01 07:50|| 2010-03-01 07:50|| Front Page Top

#5 I still wonder why there has been little or no interest in fanwing technology? It uses a centrifugal fan, like in an evaporative cooler, is mechanically simple, and far more efficient that propeller fans. Likewise it is a lot quieter and has better lift.

Posted by Anonymoose 2010-03-01 09:13|| 2010-03-01 09:13|| Front Page Top

#6 I still wonder why there has been little or no interest in fanwing technology?

Mainly because the Fans take more power, a LOT more power.

Posted by Redneck Jim 2010-03-01 11:09|| 2010-03-01 11:09|| Front Page Top

#7 What do they mean, my black helicopters are noisy???

Seriously, in the Arctic, we could hear the Hueys
a good five minutes before they emerged from the horizon!

Posted by Hotspur666 2010-03-01 16:21|| 2010-03-01 16:21|| Front Page Top

#8 Eurocopter manages to pair down the blade-vortex interaction so thoroughly that the sound only reaches the whisper volume of 3 or 4 decibels.

3-4 dB is a very low sound pressure (or intensity). Zero decibels is the threshold of hearing. If 3-4 dB is more than a few inches from the human ear, you wouldn't hear it since sound dissipates with distance. If 3-4 dB is at the human ear, it would have the sound pressure level of a whisper. This helicopter would have considerable advantage (in stealth) over our present helicopters. The helicopter would be on you before you knew it.

Posted by JohnQC 2010-03-01 18:54|| 2010-03-01 18:54|| Front Page Top

#9 What is being used right now have quiet rotor too...

Look at that shit...hooo hah!!!

What a mix...lasers, choppers and chain guns =

DEAD 'SLIMES!!!

Posted by Hotspur666 2010-03-01 21:37|| 2010-03-01 21:37|| Front Page Top

#10 How do they know when to stop shooting? Is it when the secondaries die down?

Posted by gorb 2010-03-01 21:50|| 2010-03-01 21:50|| Front Page Top

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