Empty plane weight M
L
is calculated as follows:
M
L
= R
2L
+ R
2P
+ R
1
Permitted range for empty weight: 290 – 325 kg
Note: different weight limit might apply due to national regulations.
Center of gravity for empty plane calculation:
Centre of gravity position to MAC:
(R
2L
+ R
2P
) . X
2
- R
1
. X
1
X
L
= - 114 = [ mm ]
M
L
Centre of gravity position XT to MAC in %:
X
L
x 100 % x 100 %
X
T
= = = [ %MAC ]
b
MAC
1 237
Permitted centre of gravity range for empty airplane: 15 – 20 %
Empty plane weight is calculated and recorded in weighing record,
which is integral part of plane documentation: „RECORD about the
weighing and location of gravity for UL and LSA airplane Shark“.
Weighting must be performed and recorded when any change on the
airplane configuration is made: