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

Sun, 09 Feb 2003 12:38:57 -0600

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Boy, what a mess I started...

Attached is another thought.  Please view this diagram as a schematic 
concept only, not as mechanically representative.  The thought is that 
the spring provides the increasing load proportional to stick 
displacement (and for moving the stick to center).  The servo (or other 
method) moves the pivot point of the lever that reduces mechanical 
advantage to the stick as airspeed increases (thereby varying required 
force on the stick proportionate to airspeed).  The trim wheel turns a 
jackscrew which displaces the entire load mechanism (and therefore the 
stick position).

Thoughts?

Keenan

Stig Joergensen wrote:

>Well i think i will chip in here as well
>
>Attached is a diagram of what is was thinking...
>
>Use one cylinder to control the amount of force required to move the
>stick and an other cylinder to control of center position, this cylinder
>piston is mounted on the first cylinders air compartment, so the "force
>cylinder" is moved by the "centre cylinder"...
>
>this should be able to give you total free movement found in a lowspeed
>stall and you should also be able to control the force required at
>higher speed
>
>/Stig
>
>
> ------------------------------------------------------------------------
>
> <cid:part1.03060909.06050809@netscape.com>
>

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Boy, what a mess I started... 
 
Attached is another thought. &nbsp;Please view this diagram as a schematic concept
only, not as mechanically representative. &nbsp;The thought is that the spring
provides the increasing load proportional to stick displacement (and for
moving the stick to center). &nbsp;The servo (or other method) moves the pivot
point of the lever that reduces mechanical advantage to the stick as airspeed
increases (thereby varying required force on the stick proportionate to airspeed).
&nbsp;The trim wheel turns a jackscrew which displaces the entire load mechanism
(and therefore the stick position). 
 
Thoughts? 
 
Keenan 
 
 
 
Stig Joergensen wrote: 
<blockquote type="cite" cite="mid:1463224A44C62243973321FB317A34E1B46E@exchange.clearsky.dk">
 <pre wrap="">Well i think i will chip in here as well Attached is a diagram of what is was thinking... Use one cylinder to control the amount of force required to move the stick and an other cylinder to control of center position, this cylinder piston is mounted on the first cylinders air compartment, so the "force cylinder" is moved by the "centre cylinder"... this should be able to give you total free movement found in a lowspeed stall and you should also be able to control the force required at higher speed /Stig </pre>
 
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