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US 2010/0303628 A1Published application
Rotor blade in flat design
AssigneeEurocopter Deutschland GmbH
InventorsGerald KUNTZE-FECHNER, Elif AHCI, Christine MULLER, Alois WAGNER
Life of this patent
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Abstract
A rotor blade (1), in particular of a main rotor of a rotary-wing aircraft, made of fibre-reinforced plastic includes a blade section (10) and a connecting section (12) for fastening the rotor blade (1) to a drive device (18) which includes a sleeve-shaped connecting device (14), is further developed in that the connecting device (14) includes flat fibre layers (S1 to S18) running substantially in the plane of extension of the connecting section (12).
Claims11
A rotor blade (1), in particular for a main rotor of a rotary-wing aircraft, made of fibre-reinforced plastic comprising
- a blade section (10),
- a connecting section (12) for fastening the rotor blade (1) to a drive device (18) which comprises a sleeve-shaped connecting device (14) with flat fibre layers (S1 to S18) running substantially in the plane of extension of the connection section (12) and a bolt (20) introduced substantially perpendicular to the plane of extension of the connecting section (12) for fastening the connecting section (12) to the drive device (18), characterised in that the sleeve-shaped connecting device (14) is formed as a bearing-stress connection with the flat fibre layers (S1 to S18) of the connecting section (12) being loaded by the bolt (20).
Dependencies are inferred from the claim text.