10 / 20

Determine the length of the MAC, given:

Leading edge at wing root: STA 235
Trailing edge at wing root: STA 250
Leading edge at wing tip: STA 148
Trailing edge at wing tip: STA 212
Leading edge of MAC: STA 192
Trailing edge of MAC: STA 224

Note: Body stations are distances from the aircraft nose in 10-1 m.

  • A
    150 cm
  • B
    320 cm
  • C
    400 cm
  • D
    640 cm
Mean Aerodynamic Chord (MAC) is the chord of a rectangular, unswept, untwisted wing, whose profiles and wing area is exactly the same as the original wing (which is normally straight). Its length equals the distance between the trailling edge MAC and the leading edge MAC.
  • MAC = (224 – 192) = 32 m
    Body stations are distances from the aircraft nose in 10-1 m
    Therefore, MAC = 32 x 10-1 m = 320 cm

Your Notes (not visible to others)



This question has appeared on the real examination, you can find the related countries below.

  • Greece
    2
Keyboard Shortcut Use Keyboard Shortcuts