[simpits-tech] May the Force Feedback be with you...
Keenan Akin
simpits-tech@simpits.org
Sat, 08 Feb 2003 20:32:27 -0600
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Matt,
I think you have a good point here. The max pressure that the cylinder
sees must be low enough that the stick can be moved (although with high
force) to the limits of its travel. Trim can be accomplished by
translating the cylinder.
Keenan
Matt Bailey wrote:
>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
>>>
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Matt,<br>
<br>
I think you have a good point here. The max pressure that the cylinder sees
must be low enough that the stick can be moved (although with high force)
to the limits of its travel. Trim can be accomplished by translating the
cylinder.<br>
<br>
Keenan<br>
<br>
<br>
<br>
Matt Bailey wrote:<br>
<blockquote type="cite" cite="mid:200302090153.UAA11347@rtccom.net">
<pre wrap="">The thing is, in real life, control pressure increases as the control device <br>is moved further from center.<br><br> -Matt Bailey<br><br>On Saturday 08 February 2003 19:14, you wrote:<br></pre>
<blockquote type="cite">
<pre wrap="">Ken,<br><br>What if you used a variable pressure regulator (sensing airspeed) to<br>supply the closed cylinder? That way, the presure that you would have<br>to push against with the stick would only vary with airspeed, not stick<br>position.<br><br>Keenan<br><br>Ken Schlote wrote:<br></pre>
<blockquote type="cite">
<pre wrap="">Hi All,<br><br>I woke up this morning and was thinking of some comments for this<br>problem of trim and centering the stick. Matt has said it well. My<br>comment for trim was going to be the same. As for the closed cylinder<br>I'm not so sure. If the cylinder is closed the movement of the shaft<br>will increase the pressure to a point were you can't move the shaft.<br>The cylinder will need to be big so the amount of movement won't<br>increase the pressure much. If the cylinder is attached to a big<br>chamber(and maybe this is what you are thinking Matt) then the<br>movement of the cylinder won't be noticed. This system will also need<br>two cylinders per axis.<br><br>My idea may work, use an innertube around a circular disk (attached to<br>the stick) inside a retaining ring. The pressure would be controlled<br>the same way but when you move the stick the disk would press on the<br>innertube and you would feel the pressure. The air would simply move<br>to
the otherside of the tube and the pressure would remain the same.<br>The stick would self center because the tube would go back the the<br>orginal shape. This would be the same pressure in all directions.Trim<br>would be just moving the tube assembly to a different center.<br><br>Any thoughts or comments?<br><br>Ken<br></pre>
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<pre wrap=""><!---->_______________________________________________<br>Simpits-tech mailing list<br><a class="moz-txt-link-abbreviated" href="mailto:Simpits-tech@simpits.org">Simpits-tech@simpits.org</a><br><a class="moz-txt-link-freetext" href="http://www.simpits.org/mailman/listinfo/simpits-tech">http://www.simpits.org/mailman/listinfo/simpits-tech</a><br>To unsubscribe, please see the instructions at the bottom of the above page. Thanks!<br><br>.<br><br></pre>
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