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Which outcome arises when supersonic airflow separates inside scramjet?

A)Combustion instability becomes increasingly probable
B)Laminar flow becomes slightly re-established
C)Exhaust velocity correspondingly decreases linearly
D)Thermal efficiency marginally improves thereafter

💡 Explanation

Combustion instability becomes increasingly probable because separated flow inherently generates turbulence that intensely mixes fuel/air via **turbulent diffusion**. The increased mixing causes pressure oscillations that feedback on the flame structure; therefore instability increases rather than more stable combustion.

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