Blade for mobile wheel of low pressure gas turbine of turbojet engine of aeronautical vehicle, has blade sections, each having deviation, which is minimal at foot of blade, and decreases continuously from maximal value to head of blade

摘要

The blade has a set of blade sections stacked according to a radial axis between a foot and a head. Each section has a skeleton defined by a median line between lower and upper surfaces. Deviation is defined for each section by a difference between an angle between a tangent to the skeleton and a longitudinal axis at a leading edge and an angle between the tangent and the axis at trailing edge. The deviation is minimal at the foot, and presents a maximum value for the sections located between 0.3 height (H) and 0.8 H of the blade and decreases continuously from the maximum value to the head.