Dynamic Systems; Main Rotor; Tail Rotor - Guimbal CABRI G2 Flight Manual

Hélicoptères Guimbal
CABRI G2

Dynamic systems

Main rotor

The Cabri G2 main rotor is a three-bladed, fully articulated, soft-in plane
rotor.
The rotor hub is forged from aluminum alloy, and attached to the
stainless-steel mast, by a large splines and cones attachment, with a
thrust nut. The hub is belted with a tough fiberglass winding, which
increases its tolerance to damage.
The blades are made of carbon and fiberglass-reinforced composite,
with a large internal steel tip weight, and lead balance weight, to
increase rotor inertia.
Their fork attachment is directly connected to an elastomeric, spherical
thrust bearing which ensures pitch, flap, and lead-lag motions.
They have a two-section, thick stainless steel leading edge cap which
protects them against erosion due to sand, dust and precipitations.
Each blade is linked to the rotor hub via an elastomeric lead-lag damper,
made of a single cylindrical layer of special rubber.
The blades are restrained in flapping-down, by a reciprocal droop-stop
ring, guided in the rotor hub.

Tail rotor

The tail rotor is shrouded in the vertical fin.
It has seven reinforced-plastic-injected blades. Pitch change is permitted
by their stainless steel laminated tension-torsion pack.
The tail rotor hub is directly mounted on, and driven by the tail gearbox,
and its pitch control mechanism is part of the gearbox.
The tail gearbox is rigidly supported inside the shroud, by a three-tube
mount. The front tube houses the tail rotor driving shaft.
7-2
Approved under DOA EASA.21J.211
SYSTEMS DESCRIPTIONS
Original issue
SECTION 7
Issue 09.3