What characterizes the working principle of a jet turbine?

The working principle of a jet turbine is characterized by a duct that features a divergent entry and a convergent exit. This design is critical for optimizing the flow of air through the turbine. The divergent entry allows for an increased volume of air to enter the turbine, which is essential for achieving the high mass flow rates required for effective propulsion. As the air moves through the turbine, the convergent exit section helps to accelerate the airflow, converting pressure energy into kinetic energy.

The combination of these two duct designs ensures that the aerodynamic efficiency of the engine is maximized, leading to improved thrust generation. This principle is fundamental to how jet turbines operate since they rely on converting fuel into high-speed exhaust gases that propel the aircraft forward.