Thermal Modeling and Thermal Vacuum Tests at NSPO

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Thermal Modeling and Thermal Vacuum Tests at NSPO

• Presented by
• Jih-Run (J.R.) Tsai
• National Space Program Office
• January 2005

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Outline

• Introduction to NSPO
• Thermal Modeling and Thermal Vacuum Tests
• Summary

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Introduction to NSPO

• NSPO (National Space Program Office) is the only
  space organization in Taiwan.
• Established by the National Science Council (NSC)
  of the Executive Yuan in October 1991.
• Transformed to Non-Profit Organization in June
  2003.

• Dr. Lance Wu becomes NSPO Director General from
  July 2004 to lead NSPOs second-phase space
  programs (20042018) for
• Small Satellite Integration and development
• Space science research
• Advancing space technology
• Promoting industry entrepreneurship

Note Dr. Lance Wu would have attended AMS TIM in
person if he had no major dental surgery in the
last moment.
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NSPOs Contribution to the World

• Remote sensing pictures taken by FORMOSAT-2
  (ROCSAT-2) supplied to the Southeast Asian
  countries with no charges Puhket Island after
  Tsunami (12/28/2004)

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Thermal Modeling and TVT Test Background

• To conduct thermal vacuum tests (with thermal
  balance test for QM only) for 37 QM and FM
  electronics crates/ XPD and thermal model
  correlation of QM crates and XPD at NSPO

Electronic Units Mounted on Radiators
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Thermal Modeling and TVT Test Test Schedules
Sep 2005
Sep 2002
Dec 2003
Jun 2005
QM J (completed)
QM T/TPD QM U/UPD FM J/JT/JPD FS J/JT/JPD UPS
(under discussion)
QM J/JT/JPD (completed)
FORMOSAT-3 (ROCSAT-3) launch preps. flight
operation
NSPO TV Test Facility
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Thermal Modeling and TVT Test - 1st TV / TB
Test (QM J Crate)
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Thermal Modeling and TVT Test - Model
Correlation for 1st TV / TB Test (QM J Crate)
Transient Cool-down
Thermal model correlation for hot and cold
balance phases
Comparison between predicted temperatures and
test data at main wall
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Thermal Modeling and TVT Test 2nd TV / TB
Test (QM J/JT/JPD)

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Thermal Modeling and TVT Test Model
Correlation for 2nd TV / TB Test (QM J/JT/JPD)
QM J
QM JPD
JPMD
Transient Cool-down
Comparison between predicted temperatures and
test data at main wall
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Summary

• Two QM crate TV tests have been successfully
  conducted at NSPO because of
• Excellent quality in mechanical, electrical, and
  thermal preparations at NSPO test facility
• Complete test procedures strictly followed
  during testing
• Good collaborations with CSIST, MIT, CGS, etc
• Thermal correlations to the thermal balance test
  done for crate interface temperatures and thus
  crate thermal models corrected and verified
• The future TV tests and corresponding thermal
  analyses will be performed based on good
  experience and collaboration in the past.