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Which outcome occurs when rapid decompression causes adiabatic cooling in commercial aeroplane fuel tanks?

A)Fuel temperature reaching flashpoint
B)Rupture of tank's pressure relief
C)Change of state: Vaporization
D)Increased fuel pump cavitation risk

💡 Explanation

Vaporization occurs because the rapid pressure drop causes adiabatic cooling. The mechanism, known as the Joule-Thomson effect, lowers vapour pressure, therefore liquid fuel transitions to a gaseous state rather than temperature causing combustion or only the relief valve opening; depressurisation causes phase changes first.

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