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Which consequence results when rapid temperature increase occurs in a rocket engine nozzle?

A)Thermal shock crack propagation occurs
B)Improved combustion efficiency results
C)Increased nozzle cooling effectiveness
D)Higher thrust-vectoring control authority

💡 Explanation

Thermal shock crack propagation occurs during rapid heating because differential thermal expansion creates stress exceeding material strength; therefore, failure results rather than combustion improvements occurring, due to insufficient time for uniform temperature distribution.

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