rotor head

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Noun1.rotor head - the axis around which the major rotor of a helicopter turns
axis of rotation, axis - the center around which something rotates
main rotor - rotor consisting of large rotating airfoils on a single-rotor helicopter that produce the lift to support the helicopter in the air
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References in periodicals archive ?
You will find our materials on the rotor blades, rotor hub, glazing bars, seats and interiors, engine/body fairings/access panels, fuselage, main and cargo doors, horizontal stabilizers, and fuselage panels.
[10], which indicate that the unsteady secondary flows are primarily dominated by the rotor hub passage vortex and the secondary flows from the upstream vane.
With the rotor hub set 5 m upstream of the tower, a 5[degrees] nacelle pitch and a 2.5[degrees] coning angle, the tower clearance is 11.2 m at the blade tip.
The rotor hub fits a splined or hex-shape shaft, connecting the load.
On the machine shaft 2 of the rotor hub 3 is fixed on the outer surface of which is placed radial toothed packages 4 and 5, also made of insulated electrical steel plates and are relatively shifted in the axial direction.
Police Scotland said: "In July 2012, we received a safety information notice from Eurocopter after a crack was found in the main rotor hub shaft of an EC135 helicopter in France.
Makers Eurocopter and operators Bond Air Services raised the alarm when a crack was found in the main rotor hub shaft of an EC135 Type 2 in France in July 2012.
A recent study that used computational fluid dynamics to predict the drag of production rotor hub geometries could profoundly affect the way that these manufacturers go about establishing power and propulsive force requirements at high speeds.
As quickly as contact was made, the helos started to diverge from their entangled embrace and the rotor hub strained to adjust to the increasing vibrations from the seven delaminating titanium blades.