Centrifugal force on rotating blades

  • Thread starter wisemo
  • Start date
  • #1
7
0

Main Question or Discussion Point

Hi everyone,

I've got a set of airfoil blades here which are homogenious and have a constant profile (x-section). Each blade is of equal length (as should be).
What would the best way be to calculate the centrifugal force on the blade root as a result of constant angular speed? say o - rads/s

I've just gotten a little confused about involving the 'centre of gyration'.

thanks

mo
 

Answers and Replies

  • #2
LURCH
Science Advisor
2,549
118
If you can calculate the average force throughout the blade, and multiply by the length of the blade, that will give you the total force, all of which is felt at the root of the blade.
 
  • #3
19
0
Easy, since blade is constant section, estimate the centre of mass position and treat the root forces/stresses as if the mass was concentrated at the mass centre - ie CF = Mass.Omega^2.Radius.
 
  • #4
ntn
1
0
I have recently came across a test - "Maximum regulating test" with a limit of +/- 15000 kilo-pound been performed on axial fans. Can anyone explain me what this test is all about & how it is performed.
Thanks in advance.
 

Related Threads for: Centrifugal force on rotating blades

  • Last Post
Replies
3
Views
713
Replies
6
Views
5K
  • Last Post
Replies
13
Views
1K
  • Last Post
Replies
23
Views
3K
Replies
3
Views
637
Replies
11
Views
915
  • Last Post
Replies
12
Views
994
  • Last Post
Replies
4
Views
2K
Top