109 elevator trim

[WTE_Galway]

Originally Posted by irR4tiOn4L

Actually, no idea. Could you explain please? Does that mean the controls DON'T get heavy at speed?

No, it means you have a null elevator. Regardless of holding the stick or letting it go, the aircraft is longitudinally stable and will tend to return to the trimmed position.

Though it may seem counter-intuitive, this is not always the case for all aircraft or for all loads in a given aircraft. In fact a statically unstable aircraft may offer some advantages. Modern fighters with computer assisted controls are often not statically stable.