This page is the parent page for the Phoenix Fin Can
Size: 0.75 inch radius fillet
¾” radius fillets and bigger, the fin breaks before fillet
Epoxy: systems 3000
higher temperature epoxy, better structural properties than alternatives
Risks: air bubbles weaken fillet (mitigation: 9% cabosil, vacuum epoxy for 45 minutes)
Later Testing: Make fillets with radii ¾” and under
INSTRON test fins, identify breaking points
Identify smallest radius feasible → reduce drag
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EPOXY
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TENSILE STRENGTH
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ELONGATION AT BREAK
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COMPRESSIVE STRENGTH
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GLASS TRANSITION TEMP (K)
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Systems 3000
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>36,500 PSI
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1.7-1.9%
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>15,000 PSI
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427
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Proline
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9,500 PSI
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15,000 PSI
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408
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Aeropoxy
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8,000 PSI
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7%
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11,500 PSI
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443
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MATERIAL
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Service Temp (K)
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Density (g/in^3)
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Weight (g)
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Therm. Conductivity
(W/mK)
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Machinability (%)
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Cost
($/lb)
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CTE (µm/mK)
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Stainless Steel
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1143
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127.819
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63.143
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16-24
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40-55
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$0.65
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16
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Aluminum
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623
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44.2451
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21.86
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205
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75-450
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$0.33
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