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Which outcome occurs when a rocket propellant tank undergoes rapid Ullage?

A)Vapor-Liquid Equilibrium destabilizes rapidly.
B)Tank pressure remains completely stable.
C)Fluid density increases significantly.
D)Heat transfer efficiency increases predictably.

💡 Explanation

Rapid Ullage introduces a pressure drop; enhanced by propellant shifting leads to extensive vaporization. Because the Liquid is quickly transitioning to vapor via the Vapor-Liquid Equilibrium, therefore propellant feed destabilization rather than predictable changes or density increases.

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