Timeline for Why couldn't my aircraft depart fully fueled on a 44C day?
Current License: CC BY-SA 3.0
6 events
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| Jul 6, 2015 at 17:56 | comment | added | rbp | The way I think of MAC is that it identifies the relative position between the Center of Pressure and the Center of Gravity. For longitudinal stability, the CG has to be further forward than the CP. Both of these can be expressed as %MAC. | |
| Jul 5, 2015 at 21:34 | comment | added | Terry | @Calchas You are correct, CG is center of gravity. MAC is Mean Aerodynamic Chord. The longitudinal CG of large aircraft is usually expressed in terms of the percentage of the Mean Aerodynamic Chord. Thus if the CG is 20.0, what they're saying is that it's 20% of the way from the leading edge of the MAC to the trailing edge. The CG enters into many limitations. What the MAC actually is, is considerably more complicated, but think of it as the distance from from the leading edge of the wing to the trailing edge if the wing was of a constant distance from leading edge to trailing edge. | |
| Jul 5, 2015 at 21:33 | history | edited | DeltaLima♦ | CC BY-SA 3.0 |
Added explanaition of CG & MAC
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| Jul 5, 2015 at 21:20 | comment | added | Calchas | What is CG? Centre of gravity? And MAC? Thanks | |
| Jul 5, 2015 at 20:59 | history | edited | Terry | CC BY-SA 3.0 |
added 9 characters in body
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| Jul 5, 2015 at 20:54 | history | answered | Terry | CC BY-SA 3.0 |