What is a major advantage of turbine engines over piston engines at high altitude?

• A. Higher power output and better performance at higher altitudes with more reliable operation.
• B. Lower maintenance cost.
• C. Simpler construction.
• D. Better takeoff performance at sea level.

Answer: (A)

At high altitude the air is thinner, and piston engines suffer a big drop in power because they rely on denser air for efficient combustion and to fill the cylinders. Turbine engines, on the other hand, generate power by compressing the incoming air and burning fuel within the engine, so their operation is less severely affected by the thinning air. As a result, they maintain a higher fraction of their power and provide more consistent, reliable performance as you climb. That combination—higher retained power and more reliable operation in thin air—is what makes turbine engines advantageous at altitude.