PeachParts Mercedes-Benz Forum
Page 3 of 3 12 3
Show 50 post(s) from this thread on one page

PeachParts Mercedes-Benz Forum (http://www.peachparts.com/shopforum/)
-   Diesel Discussion (http://www.peachparts.com/shopforum/diesel-discussion/)
-   -   Why are the fan blades uneven? (http://www.peachparts.com/shopforum/diesel-discussion/301569-why-fan-blades-uneven.html)

okto 07-07-2011 08:17 PM
Quote:
Originally Posted by tbomachines (Post 2748343)
Except, regardless of how many blades it has, if they are all equal in length and spaced out evenly they will amplify like crazy. That's because each one would have the same wavelength relative to the last and following blade, they would all be generating identical pulses.
Good point. I was thinking purely in terms of mechanical oscillation, not the pulse each blade makes as it cuts through the air.

You can make physics say anything is possible if you leave out the right bits from your theoretical system. :P

lutzTD 07-07-2011 10:17 PM
Quote:
Originally Posted by tbomachines (Post 2748343)
Except, regardless of how many blades it has, if they are all equal in length and spaced out evenly they will amplify like crazy. That's because each one would have the same wavelength relative to the last and following blade, they would all be generating identical pulses.

yes but at only one frequency, if it is a 12 blade it will amplify like crazy at 5 frequencies. think of it this way, a 12 blade fan has 6 2 blade fans, 3 4 blade fans, 4 3 blade fans and 2 6 blade fane buried inside of it, each of these produces its own amplified noise frequencies.

scottmcphee 07-07-2011 11:06 PM
I'm a big fan of the question that started this thread.

vstech 07-08-2011 08:57 AM
isn't jimmyL a fan expert?...

leathermang 07-08-2011 09:00 AM
JimmyL is an antique fan collector...


All times are GMT -4. The time now is 11:38 AM.
Page 3 of 3 12 3
Show 50 post(s) from this thread on one page

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website