Hélicoptères Guimbal
SECTION 6
CABRI G2
WEIGHT AND BALANCE
6-4
Approved under DOA EASA.21J.211
Weight and CG position determination
Before each flight, the pilot should determine helicopter gross weight and
CG position in order to check that helicopter CG limits shown page 2-8 are
not exceeded, and to determine performance (Refer to Section 5).
This can be done with the following table :
1. Determine all the weights in the first column,
2. Compute longitudinal and lateral moments,
3. Sum each three columns,
4. Calculate total arms by dividing moments by total weight.
In metric units :
Item
Weight
(kg)
Arm X
(mm)
Arm Y
(mm)
Mom X
Mom Y
Equipped aircraft
EW
(
1
)
AX
(
1
)
AY
(
1
)
MX
(
1
)
MY
(
1
)
Right
occupant and seat
1300
320
Left
occupant and seat
(
5
)
1300
-280
Doors
right
(
4
)
1250
600
left
-600
Main luggage
compartment
1854
323
Front luggage
compartment
325
0
Fuel (
2
)
(
2
)
(
3
)
(
3
)
Supplements (
6
)
(
6
)
(
6
)
(
6
)
Total
Sum =
GW
MX / GW MY / GW
Sum =
MX
Sum =
MY
(
1
) Report aircraft equipped weight data
(
2
) Use 0.72 kg/L for AVGAS density, and 0.75 kg/L for automotive
gasoline density.
(
3
) For fuel position, use :
Fuel Quantity ................................... X................. Y
0 to 50 L .....................................1833 mm -313 mm
50 to 150 L ...................................1886 mm -338 mm
150 to 170 L ..................................1903 mm -342 mm
(
4
) Use - 3.1 kg (negative weight) when a door is removed
(
5
) Use - 3.5 kg when left seat is removed
(
6
) Refer to Section 9 for removable supplements.
For bear paws, Use 1.5 kg and no impact on CG position.
