Originally Posted by B747-437B (Post 29002563)

Modern load control programs are very good at calculating CoG and other parameters based on static LOPA and dynamic DCS inputs, including how these change as fuel burns off and how trim should be altered accordingly.

Originally Posted by Sixth Freedom (Post 29003576)

There are some passenger comfort issues.

Theoretically 3-3-3 offers economy cabin passengers the highest chance of an empty seat next to them. To see why, consider the seat factors that would be required for every passenger to have an empty seat next to them:

3-3-3 = o-o o-o o-o = 6/9 seats occupied = 67%
3-4-2 = o-o o-o- o- = 5/9 seats occupied = 56%
2-5-2 = o- o-o-o o- = 5/9 seats occupied = 56%
2-4-2 = o- o-o- o- = 4/8 seats occupied = 50%
3-4-3 = o-o o-o- o-o = 6/10 seats occupied = 60%

(o = occupied, - = not occupied)

The higher the "empty seat guarantee seat factor", the more likely it is that a passenger will be on such a flight. So 3-3-3 will cause the most passengers possible to have a more comfortable journey.

Now the problem with this approach is that most passengers travel on busy flights and/or that at some stages of the cycle most flights are busy, but that is another story...

:)

Originally Posted by nerd (Post 29006754)

I think CoG means center of gravity.

What are static LOPA and dynamic DCS?