[simpits-tech] May the Force Feedback be with you...

[Matt Bailey]

The thing is, in real life, control pressure increases as the control device 
is moved further from center.

	-Matt Bailey

On Saturday 08 February 2003 19:14, you wrote:
> Ken,
>
> What if you used a variable pressure regulator (sensing airspeed) to
> supply the closed cylinder?  That way, the presure that you would have
> to push against with the stick would only vary with airspeed, not stick
> position.
>
> Keenan
>
> Ken Schlote wrote:
> > Hi All,
> >
> > I woke up this morning and was thinking of some comments for this
> > problem of trim and centering the stick. Matt has said it well. My
> > comment for trim was going to be the same. As for the closed cylinder
> > I'm not so sure. If the cylinder is closed the movement of the shaft
> > will increase the pressure to a point were you can't move the shaft.
> > The cylinder will need to be big so the amount of movement won't
> > increase the pressure much. If the cylinder is attached to a big
> > chamber(and maybe this is what you are thinking Matt) then the
> > movement of the cylinder won't be noticed. This system will also need
> > two cylinders per axis.
> >
> > My idea may work, use an innertube around a circular disk (attached to
> > the stick) inside a retaining ring. The pressure would be controlled
> > the same way but when you move the stick the disk would press on the
> > innertube and you would feel the pressure. The air would simply move
> > to the otherside of the tube and the pressure would remain the same.
> > The stick would self center because the tube would go back the the
> > orginal shape. This would be the same pressure in all directions.Trim
> > would be just moving the tube assembly to a different center.
> >
> > Any thoughts or comments?
> >
> > Ken