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← ScienceWhich 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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