Presentation 406 - International Planetary Probe Workshop
Presentation 406 - International Planetary Probe Workshop
Presentation 406 - International Planetary Probe Workshop
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PICA Bondline Temperature Predictions<br />
Mars Science Laboratory<br />
rature (°C)<br />
Bon neline Tempe<br />
70<br />
60<br />
50<br />
40<br />
30<br />
20<br />
10<br />
0<br />
0 50 100 150 200 250 300 350 400<br />
Time (s)<br />
Composite<br />
Face<br />
Sheets<br />
Ten months from<br />
start of PICA effort!<br />
Material Stack-up<br />
PICA<br />
Flex Core<br />
Adhesive<br />
• Bondline requirement is maximum temperature of 250 °C (thermal margin > 180 °C)<br />
• Thermal model predictions at the region of highest recession indicate that the<br />
bondline temperature t should reach a maximum of 70 °C during entry<br />
• Analysis and margining process predict 0.94” required (vs 1.25” as-built), or 0.31” of<br />
extra material on heatshield<br />
From M.J. Wright, R.A.S. Beck, K.T. Edquist, D. Driver, S.A. Sepka, E.M. Slimko, W.H. Willcockson, A. DeCaro,<br />
and H.H. Hwang, “Sizing and Margins Assessment of the Mars Science Laboratory Aeroshell Thermal<br />
Protection System,” AIAA 2009-4231.<br />
June 16, 2010 7 th <strong>International</strong> <strong>Planetary</strong> <strong>Probe</strong> <strong>Workshop</strong> (IPPW7) HHH-16
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