rotor outline drawing. spider cross-section next page. weight is 4000 pounds
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Rotor Outline drawing. Spider cross-section next page. Weight is 4000 pounds.
New Rotor Spider Section Z-Z. Diametral area moment of inertia calculated on eng-tips link: http://www.eng-tips.com/viewthread.cfm?qid=274310
3.62
5”3.
625”
End view of installed rotor
Side view of rotor
Model used for calculation
L1=22 inchI1 = 135.6 inch^4Mu1=12 lbf/inch
L2=25 inchI2=953 inch^4Mu2=69.6 lbf/inch
L1I1mu1
L2I2mu2
Shaft Spider/Core
LIN
E O
F S
YM
ME
TR
Y (Mirror image)
Mu1 Mu2 Mu2 Mu1
Analysis. Double-click to open pdf. Plots on pages 8 and 9
Results:Slope at bearing due to weight of rotor isSlope = -0.00015
For bearing length of 4.5”, this is approx 0.7 milChange in elevaation.
Since clearance is 6 mils, this is approx 11% of Bearing clearance.
Adobe Acrobat 7.0 Document
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