Quote:
Originally Posted by Upthair
No, it does not.
Why do you assume that the pilot's head has to shake exactly the same way as the gun camera? 
The vibration starts with the firing guns, which are attached to the wings, which are attached to the fuselage. The wing roots shake less than the middle of the wings, where the guns and camera are; and the fuselage shakes much less than the wings; and the pilot's head has to shake less than the seat he sits on.
... |
Just found a picture roughly to illustrate that the vibration varies at different parts of the fighter:
The wing is in a sense like the long ruler, and the table the fuselage, since the mass of the fuselage is much, much larger than that of the wing. (There is a bit of physics omitted here.) Please pay attention to the magnitude of vibrations at different parts of the ruler. In fact the woman's right hand and the table also vibrate - negligibly to the human eye.
And the human body is soft to a certain extent; in particular, the soft tissues between consecutive bones of the spine are just for absorbing vibrations coming from the bottom or legs to the head or brain. That's why the head shakes even less than the seat if the seat (fastened into the fuselage) ever shakes slightly.
~~