Re: [Flightgear-devel] Visual force feedback

[Alex P. <al...@fa...>]

There are two effects ...

> >In real life, the pilot's head moves in response to the forces acting 
> >on the plane.  
> Yes. I don't know whether the effect will be advantageous, but once we
> have a 3D-cockpit, it should be fairly simple to test.

1. Large accelerations of the aircraft will displace body parts until
your autonomous nervous system can use muscle force to put them back.
Therefore, to make this convincing, you need a model of the autonomous
feedback system.  The image should deflect following a change in acceleration
(such as turbulence) and immediately return to the normal position.

> >I would imagine that high frequency
> >stuff like engine vibrations would have to be smoothed out or ignored
> >because the our visual systems seem to be able to compensate for such
> >vibrations, at least until they get excessive.
> Yes. Also, if you model high frequencies, it would become even harder
> to read the gauges.

2. Vibration distorts the eyeball, such that it is no longer a good camera.
This is generally not a problem in small aircraft and normal operation.

Prerequisites to working on (1) are
(a) a realistic turbulence model
(b) a 3D cockpit environment
(c) a first guess of the feedback control law
We have none of these, so the concept should probably be deferred
until someone is willing to work on those three topics.