CELIER
SERVICE MANUAL
Xenon 2 RST
Aviation
Weighing and Specifying the Position of the Centre of Gravity
Chapter 6
6.1
Introduction
Check weighing and specifying the position of the centre of gravity of the empty gyrocopter
must be performed not less than every 4 years, and also in every case in which a change of weight
or weight distribution can occur, e.g. after doing repairs, painting, introducing structural changes,
building in new or replacing fixed equipment with other.
6.2
Position of the Centre of Gravity and a Datum Reference
The position of the centre of gravity of the gyrocopter (a sideways view) is specified with the
value of the angle whose apex is located on the transverse axis of rotor head suspension on the mast,
one arm is parallel to the vertical axis of the coordinate system related to the fuselage, and the
second arm passes through the centre of gravity of the gyrocopter.
The Cartesian coordinate system, based on the fixed fuselage surfaces as on the figure below,
is helpful in specifying the position of the centre of gravity by a method of three-scales placed under
the undercarriage wheels.
In practice, to level the gyrocopter, use the upper flat surface of the tunnel inside the cockpit
between the chairs.
Page 6-2
Document no.: X2RST-001-PL
Edition 1
24 Aug 2009
Change no.: