What is the engine type of the Cessna 172?

The engine type of the Cessna 172 is classified as normally aspirated and direct drive. A normally aspirated engine relies on ambient air pressure for its air intake without the use of a supercharger or turbocharger, which means it performs best at lower altitudes due to decreasing air density at higher altitudes. In direct drive engines, the crankshaft is directly connected to the propeller, allowing for a straightforward power transfer from the engine to the propeller without additional gearing.

This configuration is characteristic of the Cessna 172, which typically features a four-cylinder, horizontally opposed engine design. The direct drive system, along with being normally aspirated, contributes to the aircraft's reliability and is well-suited for the general aviation flying that the Cessna 172 is known for, making it a popular choice for flight training and recreational flying.

Understanding this engine type can help pilots appreciate the performance characteristics and operational limitations of the Cessna 172, particularly how altitude and engine power affect flight capabilities.