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← ScienceWhich risk increases in a spacecraft experiencing constant acceleration?
A)Reduced effective pilot reaction time
B)Increased radiation exposure to crew
C)Fuel line blockage from propellant sedimentation✓
D)Structural fatigue from frame resonances
💡 Explanation
Consistent acceleration induces the equivalent of a gravitational field, thereby sedimentation of dense propellant components occurs. This causes fuel blockage because differential settling separates fuel phases, rather than other inertial effects, due to the 'equivalence principle'.
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