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B64C27/22—Compound rotorcraft, i.e. aircraft using in flight the features of both aeroplane and rotorcraft
B64C27/28—Compound rotorcraft, i.e. aircraft using in flight the features of both aeroplane and rotorcraft with forward-propulsion propellers pivotable to act as lifting rotors
Dispositif d'absorption d'energie d'une maniere continue avec deplacement relatif, par laminage d'une bande metallique entre deux pieces de section definie