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VIRUS
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Baggage and CG
The amount of baggage you can carry in the solid baggage compartment or in the baggage pouch
behind the seats is limited by the centre of gravity of the empty aircraft (pilots’ and fuel weight do
not inuence c.g.) and the MTOM.
To calculate how much the c.g. shifts because of added baggage into the solid baggage compartmet
or the baggage pouch behind the seats use the following formula:
where:
Gtotal is the aircraft empty weight,
CGmm is the position of CG of empty aicraft in milimeters (mm),
Gbags is the weight of the baggage,
Lbags is the lever arm from the datum to baggage area (1160 mm).
Again, express the new c.g. in percentage of MAC:
where:
CGwith.bags is the position of CG now with bags in milimeters (mm),
R is the dierence between wing’s leading edge and MAC’s leading edge (29 mm),
MAC is the Mean Aerodynamic Chord (908 mm).
We now have the data of c.g. of the sample aircraft with 10 kgs of baggage. You can recalculate the
formulas using the weights and c.g. of your empty aircraft and the planned amount of baggage for
your ight.
CAUTION: The baggage weight limitations mentioned on page 15 of this manual represent
fool-proof limits for safe operation, even without special c.g. calculation. However, the actual
baggage weight limitation is dierent of each individual aicraft and can be determined using the
above formulas. The decision of how much baggage to carry on a ight is at pure responsibility
of the pilot in command!
WARNING! Always make sure that the baggage is placed xed inside the baggage area.
Movements of baggage in-ight will cause shifts of centre of gravity!
WARNING! Do not, under any circumstances attempt to y the aircraft outside the allow-
able c.g. limits! Allowable c.g. range is between 210 mm and 374 mm,, measured from the wing's
leading edge backwards which corresponds to 20% - 38% MAC)
WARNING! Maximum takeo weight (MTOM) MUST NOT, under any circumstances, exceed
450 / 472,5kg.
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