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← ScienceWhich outcome arises during rocket engine startup when the propellant injectors deliver fuel unevenly?
A)Increased chamber pressure oscillations✓
B)Enhanced laminar flame propagation
C)Reduced nozzle thermal stress
D)Improved combustion efficiency globally
💡 Explanation
Uneven fuel delivery can cause localized regions of inconsistent mixing, triggering increased chamber pressure oscillations from complex turbulent eddies near the injector face, because of induced thermoacoustic instability. Therefore pressure oscillations worsen, rather than flame stabilizing or global combustion improves with turbulence effects.
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