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An aeroplane has a MAC of 3.08 m and a Leading Edge MAC (LEMAC) of 14.72 m aft of datum. If the CG position of that aeroplane is located 16.13 m aft of datum, what is the CG position in % MAC?
  • A
    52.03% MAC
  • B
    41.44% MAC
  • C
    45.78% MAC
  • D
    32.16% MAC

Leading edge of MAC from Datum: 14.72 m
MAC length: 3.08 m
CG position: 16.13 from datum

Center of gravity is (1.41) m from the leading edge of MAC.
CG distance from leading edge = 16.13 — 14.72 = 1.41 m
To know CG position % relative to MAC = CG distance from leading edge / MAC length
CG position % relative to MAC = 1.41 / 3.08 = 45.78 %

Correct Answer: 45.78%

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