Eaircraft CG movement 2 trolleys from G5/G6 to row 18 = 2 x 80 x (30.77.54.064) = -3727.04 kg.m
3. Crew members movements 2 cabin crew from aft positions to passenger row 18
Eaircraft CG movement 2 cabin crew from aft position to row18 = W2 cabin crew x (H-armRow18 . H-armaft) Eaircraft CG movement 2 cabin crew from aft position to row18 = 2x70 x (30.77.55.21) = -3421.6 kg.m 1 cabin crew from forward position to cockpit
Eaircraft CG movement 1 cabin crew from fwd position to cockpit = W1 cabin crew x (H-armcockpit . H-armfwd) Eaircraft CG movement 1 cabin crew from fwd position to cockpit = 70 x (8.872.11.575) = -189.21 kg.m
Total forward movements :
Eaircraft FWD CG movement = Eaircraft CG movement 2 pax from row 4 to La/Lb
+
Eaircraft CG movement 2 pax from row 21 to Lc/Ld
+
Eaircraft CG movement 2 trolleys from G5/G6 to row 18
+
Eaircraft CG movement 2 cabin crew from aft position to row18
+
Eaircraft CG movement 1 cabin crew from fwd position to cockpit
Eaircraft FWD CG movement = - (926.7 + 2059.95 + 3727.04 + 3421.6 + 189.21) = -10320.5 kg.m
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C. BALANCE CHART DESIGN
3.7. Total operational margins determination
The total operational margins per flight phase are determined summing each individual margin, some of them being considered as systematic, the other ones as non systematic.
+
FWDmarginSystematic1 +
... +
FWDmarginSystematic n AFTmarginSystematic1 +
... +
AFTmarginSystematic n
WEIGHT AND
BALANCE
C. BALANCE CHART DESIGN
3.8. Takeoff, Landing, In-Flight operational limits determination
When total operational margins per flight phase are determined they are applied to each
corresponding certified limit to obtain the operational limits per flight phase.
Certified limits are published in the WBM 1.10 tables presenting A/c Certified Weight = W and
A/c Certified CG limit (%RC) = CG.
Certified limits Flight phase
Weight W CG (%RC) CGcertified CG (H-arm) H-armcertified Aircraft Moment on certified limit
W CG 100 CGMACLEMAC ×
×
100 CGMACLEMACW ×
×
×
Total operational margin Flight phase = E
Operational limits Flight phase
Weight W Aircraft Moment on operational limit CG (H-arm) H-armoperational CG (%RC) CGoperational
W W x H-armcertified - E W E--armW x H certified MAC 100LEMACW EarmHW certified ×
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