Help, Centre of Gravity (Weight and Balance)

[Ben2000]

Hi all,

OK, I am done with the Ground School material from three different sources. But this expression (question) caught me off-guard.

What does this mean "The Centre of Gravity range of most aircraft reduces as the aircraft mass increases". What does "reduces" mean in this context please? Does it mean move forward OR move aft?

The options were

A] The forward C of G limit moving rearwards to reduce stability.
[B] The aft C of G limit moving forward to increase stability.
[C] The aft C of G limit moving rearwards to extend the static margin.
[D] The static margin moving forward to reduce manoeuvrability

I chose option [B], to me, that is the only one that made sense. Also because the calculations we make were subtractions (reductions) while doing the W&B exercises.

Any help would be greatly welcome!

[zzuf]

Not sure about the question but consider that many aircraft have two or more forward CG limits.
1. Most forward CG at gross weight and a sloping forward limit, moving more forward as weight reduces:
2. Most forward CG regardless of weight.
The CG range is the range between forward CG limit and aft CG limit at the specified weight.. If the aircraft has a sloping forward limit, the most forward CG limit moves aft as weight is increased. Answer A.
https://aviation.stackexchange.com/questions/15180/how-are-the-limits-of-the-center-of-gravity-chart-established

[Ben2000]

Hi houstoncfi
Well, for sure option C & D do not make sense to me. So, it had to be option A or B. As zzuf mentioned, it seems to be Option A. No way for me to confirm or deny since the CAA here does not make the right answers available.