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← ScienceWhen a rocket nozzle experiences extreme localized heating during launch, which failure mode is triggered?
A)Ablative cooling material degradation✓
B)Increased structural tensile strength
C)Decreased exhaust gas velocity
D)Turbulent boundary shockwaves stabilize
💡 Explanation
Extreme heat causes ablative cooling through induced phase transitions. Pyrolysis occurs; solid material vaporizes transporting heat away protecting the nozzle surface, because thermal energy breaks chemical bonds causing decomposition. Therefore material degrades rather than strengthens.
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