A rotor blade (100) comprising a core blade section (102); and a trailing edge section (104), the trailing edge section being attached to the core blade section along a join interface (106). The trailing edge section (104) comprises a shape memory material (138) which is actuable so as to cause selective deformation of the trailing edge section between a first condition in which a trailing edge (112) of the trailing edge section follows a substantially smooth profile and a second condition in which the trailing edge is perturbed (110). The direction of the perturbation may be oblique or perpendicular to the direction of flow over the blade in use. The rotor blade may be a fan or propeller for a gas turbine engine.
Variable shape rotor blade
Rotorblatt mit veränderlicher Form
Aube de rotor de forme variable
2015-10-07
Patent
Elektronische Ressource
Englisch
IPC: | B64C AEROPLANES , Flugzeuge / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / F01D Strömungsmaschinen [Kraft- und Arbeitsmaschinen oder Kraftmaschinen], z.B. Dampfturbinen , NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES / F04D Strömungsarbeitsmaschinen , NON-POSITIVE-DISPLACEMENT PUMPS |