What type of engine does the Cessna 172 typically use?

The Cessna 172 typically uses a horizontally opposed piston engine, which is characterized by its configuration where the cylinders are arranged horizontally on either side of a central crankcase. This design is particularly suited for general aviation aircraft due to its balance, reliability, and smooth operation. The horizontally opposed engine, often referred to as a "flat" engine, helps to maintain a lower profile, which contributes to better aerodynamics and stability in flight.

This engine type provides a combination of performance and efficiency, making it ideal for the Cessna 172's role as a training and recreational aircraft. Furthermore, horizontally opposed engines usually have fewer vibrations compared to other configurations, enhancing passenger comfort and reducing wear on the aircraft's structure.

In contrast, a jet engine operates on a completely different principle of propulsion, utilizing jet thrust rather than mechanical force generated by pistons. A rotary engine features a unique design that differs significantly from conventional piston engines, employing a rotating triangular rotor within a housing, which is not found in the Cessna 172. Meanwhile, a radial engine employs a different arrangement of cylinders typically found in older aircraft designs, which is also not applicable to the Cessna 172. Thus, the selected answer accurately reflects the engine type used in