| Is in general directed downwards and will become less negative when the c.g. moves aft. |
| Is in general directed downwards and will always become less negative in a linear fashion with increasing airspeed. |
| Will in principle be zero on transport aeroplanes without an electronic flight control system (Fly- by-Wire) due to the trim system. |
| Is in general directed upwards and will increase when c.g. is moved forward. |
EN 