Which factors establish the maximum compression ratio limitations of an aircraft engine?

The maximum compression ratio limitations of an aircraft engine are influenced by multiple factors, including fuel characteristics, engine design, and supercharging levels.

Focusing on the correct choice, the degree of supercharging is particularly crucial because supercharging increases the density of the air-fuel mixture entering the engine, allowing for more fuel to be burned and thus increasing power. However, higher supercharging can also create higher temperatures and pressures within the combustion chamber, influencing detonation and overall engine stress. The optimization of compression ratios in supercharged engines is vital to ensure efficient performance without leading to knocking or mechanical failure.

While the characteristics of the fuel and engine design also play significant roles, it is the supercharging that uniquely influences how much power can be efficiently extracted from the engine while still maintaining safe operating conditions. Thus, understanding how supercharging affects compression ratio limitations is key for anyone working with aircraft engines.