Final Summer Checkout
Taeyeon Kim
Page 2
1. Vibration test plan for KHU
2. Harnessing
3. STEIN Housing
4. Future work
AGENDA
Page 3
My Schedule on Summer vaca-tion
In UC Berkeley (Now~ 12th Aug.)
Harnessing, Modify STEIN Housing
In UC Berkeley (18th July~ Now)Modified 2D drawing, STEIN fit check, Har-
nessing
IN Kyung Hee University ( ~16th July)
Prepared the vibration test, a fixture design
At Kyung Hee University
Page 5
Modal Analy-sis
Static Analy-sis by using
MAC
Responds Analysis
Vibration Test
Process of Vibration Test
Prove CINEMA is stable on a launcher
Get the natural frequency of CINEMA
Decided the point of an ac-celerometer on CINEMA
Random vibration testNOW
1st mode: 320 Hz
Stress mar-gin: 10%
Decided Ac-celerometer
points
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Responds Analysis
<X axis> <Y axis>
<Z axis>
• Get a result of RMS value of Acceleration at the worst case
• Unit level is refer to GSFC-STD-7000
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• Qualification Model will be take the Random vibra-tion test at SATREC ( Middle of October)
• We can help a vibration test if vibration test of the UHF antenna is delayed after middle of September.
Accelerometer & Plan
Primary
Secondary
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Design of Fixture for KHU
UP Bottom
<Bottom of TestPOD>
<Fiixture>
At UC Berkeley
Page 10
STEIN Flex Circuit Fit Check
• Assembled the digital board and STEIN parts (except At-tenuator)
• Fit check connecting wire and STEIN housing
• However, connector on the digital circuit is broken.
• Disassemble the STEIN as-sembly to repair the digital board
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-Change the 3D modeling of STEIN Electronics Housing.
STEIN Flex Circuit
0.05 in
• Extended the wall of STEIN housing to consider the flex circuit.• Make a 2D drawing
Page 12
Harnessing
• Work with • I made the MAGIC Harnessing wire.
• Wire is twisted at 100 times.
Page 13
FUTURE WORK
• Harnessing in UC Berkeley
• STEIN fit check (if it is possible)
• Performed random vibration test in South Korea
• Assemble the CINEMA with KHU mechanical team
Thank youK y u n g H e e U n i v e r s i t y / S c h o o l o f S p a c e R e s e a r c h
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