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← ScienceWhich outcome results when a jet engine's turbine blades experience thermal creep?
A)Decreased turbine efficiency at high RPMs✓
B)Increased fuel efficiency during cruising
C)Lower NOx emissions mid-throttle ranges
D)Improved surge margin at high altitude
💡 Explanation
Thermal creep causes turbine blades to deform plastically under stress and high temperatures, diminishing aerodynamic profiles; fuel consumption rises, eroding turbine efficiency because blade geometry is compromised; therefore efficiency decreases, rather than stalls averted.
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