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Entry  Wed May 12 14:23:20 2021, Jordan, Update, SUS, Mass Properties of SOS Assembly with 3"->2" Optic sleeve, in SI units Moments_of_Inertia_SI.PNG
    Reply  Wed May 12 16:53:59 2021, Koji, Update, SUS, Mass Properties of SOS Assembly with 3"->2" Optic sleeve, in SI units 
       Reply  Wed May 12 17:06:52 2021, Jordan, Update, SUS, Mass Properties of SOS Assembly with 3"->2" Optic sleeve, in SI units Moments_of_Inertia_SI.PNG
          Reply  Wed May 19 18:29:41 2021, Koji, Update, SUS, Mass Properties of SOS Assembly with 3"->2" Optic sleeve, in SI units SOS_resonant_freq.pdfSOS_resonant_freq.nb.zip
Message ID: 16146     Entry time: Wed May 19 18:29:41 2021     In reply to: 16137
Author: Koji 
Type: Update 
Category: SUS 
Subject: Mass Properties of SOS Assembly with 3"->2" Optic sleeve, in SI units 

Calculation for the SOS POS/PIT/YAW resonant frequencies

- Nominal height gap between the CoM and the wire clamping point is 0.9mm (cf T970135)

- To have the similar res freq for the optic with the 3" metal sleeve is 1.0~1.1mm.
As the previous elog does not specify this number for the current configuration, we need to asses this value and the make the adjustment of the CoM height.

Attachment 1: SOS_resonant_freq.pdf  136 kB  Uploaded Wed May 19 19:30:35 2021  | Hide | Hide all
SOS_resonant_freq.pdf SOS_resonant_freq.pdf
Attachment 2: SOS_resonant_freq.nb.zip  7 kB  Uploaded Wed May 19 19:30:50 2021
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