What type of turbine blade is most commonly used in aircraft jet engines?

The most commonly used type of turbine blade in aircraft jet engines is the impulse-reaction blade. This blade configuration combines the principles of both impulse and reaction designs to optimize efficiency and performance. Impulse blades convert the kinetic energy of high-speed gases into mechanical work through a series of nozzles, while reaction blades generate thrust and lift by creating a pressure difference as the gases pass through. This hybrid design effectively harnesses the advantages of both methods, allowing for smoother airflow and increased thrust-to-weight ratios, which are critical in aviation applications.

Aircraft jet engines are typically designed for high efficiency and performance at various operating conditions, and the impulse-reaction blade design neatly fits these requirements. Additionally, this type of blade can withstand the high thermal and mechanical stresses found in jet engine environments, making it the preferred choice in modern turbine engines.