What is the term used to describe the curved face of a propeller blade?

The term used to describe the curved face of a propeller blade is "blade camber." This curvature is essential for generating lift and thrust as the propeller rotates. The blade camber affects the airflow over the blade surface, which is crucial for the overall performance of the propeller. A well-designed camber contributes to efficient propulsion by optimizing the pressure difference between the upper and lower surfaces of the blade, allowing it to convert rotational energy into thrust effectively.

The other terms mentioned refer to different aspects of a propeller's geometry and function. For instance, the angle of attack describes the angle between the chord line of the blade and the oncoming air, which affects the lift produced. The blade chord is the straight-line distance from the leading edge to the trailing edge of the blade, while blade pitch refers to the angle that the blade makes with the plane of rotation. Understanding the distinction between these terms is crucial for a thorough grasp of propeller mechanics and aerodynamics.