Balancing multi-blade EDF impeller

[Babylon5]

Hi, does anyone knows how to balance the rotary impeller of odd number of blade use in EDF?
Example :-3 blade,5 blade and 7 blade

I am at present trying to balance a 3 blade and a 5 blade.

Appreciate any help

[chewy]

Hi, does anyone knows how to balance the rotary impeller of odd number of blade use in EDF?
Example :-3 blade,5 blade and 7 blade

I am at present trying to balance a 3 blade and a 5 blade.

Appreciate any help

Hi Babylon,

Did you get any info/help on the above matter? If so, do you mind sharing with me, please? Generally, can you use a prop balancer to balance a fan?

Regards,

Chewy

[Babylon5]

Hi Chewy , only some help on 3 blade.
For the 3 blade when you rotate none of the single blade should be pointing up(too light) or down(too heavy).
No luck on 5,7 or higher odd order number of blade.


Cheers

[Babylon5]

5blade balance.

Hi, still no luck in getting aero-dynamic balance for the 5 bladed rotary fan balde. Anyone got any diagram or picture to show how it is done will be a great help.

Thank you all in advance