Fibre-reinforced helicopter rotor - has blades supported for pitch movement, with central head section extending radially outwards

摘要

The head section is an integral fibre mixture material. The blade holders are each the shape of a fork, with legs formed flat and at right angles to the rotor plane. Each blade holder has a connection between both it's fork legs and the corresponding rotor blade or the root of it's blade, which can be subjected to pressure along the length of the blade but permits blade rotation angular movement. The outer ring (13.1) of the blade angle bearing is the central part of a form section fitted on both sides of the blade holder (2) of it's level surfaced fork legs (2.1). Between each fork leg and the form section is an elastically flexible connection with a high damping capability elastomer layer (13.2, 13.3).