Abstract: A blade (1) provided with a fitting (2) for fastening to a hub and with an airfoil element (10) having a spar (20) extending spanwise from an attachment zone (21) towards a distal zone (22), said attachment zone (21) surrounding a centrifugal force transmission bushing (31) that is connected to said fitting (2) by a through pin (3). The blade comprises a twisting force transmission member (40) provided with a first half-shell (41) and with a second half-shell (42) that together surround said attachment zone (21), each half-shell (41, 42) having a perforated first portion (43?, 43?) giving visual access to said bushing (31) when said airfoil element is removed from the fitting, and a second portion (44?, 44?) co-operating with a torsion box (50) surrounding said distal zone (22), said transmission member (40) being secured to said fitting in rotation about a torsion axis (AX) of the blade (1).

Abstract: A blade (1) having a fitting (2) for fastening to a hub and an aerodynamic element (10) having a main spar (20) surrounding a bushing (31) for transmitting centrifugal forces and connected to said fitting (2). The blade includes a transmission member (40) for transmitting torsional forces and co-operating with a torsion box. The fitting (2) includes an annular recess (200) defining a first recess (201) and a second recess (202) that are separated by a top separator (211) and a bottom separator (212) locally obstructing the annular recess (200), the blade (1) including a first ring (71) and a second ring (72) reversibly arranged respectively in the first recess (201) and in the second recess (202), each ring (71, 72) being fastened to the top separator (211) and to the bottom separator (212), a ring (71) including a fastener pin (73) passing through said bushing (31) and said fitting (2) in co-operation with the other ring (72).

Abstract: A blade (1) provided with a fitting (2) for fastening to a hub and with an airfoil element (10) having a spar (20) extending spanwise from an attachment zone (21) towards a distal zone (22), said attachment zone (21) surrounding a centrifugal force transmission bushing (31) that is connected to said fitting (2) by a through pin (3). The blade comprises a twisting force transmission member (40) provided with a first half-shell (41) and with a second half-shell (42) that together surround said attachment zone (21), each half-shell (41, 42) having a perforated first portion (43?, 43?) giving visual access to said bushing (31) when said airfoil element is removed from the fitting, and a second portion (44?, 44?) co-operating with a torsion box (50) surrounding said distal zone (22), said transmission member (40) being secured to said fitting in rotation about a torsion axis (AX) of the blade (1).