[simpits-tech] May the Force Feedback be with you...
Keenan Akin
simpits-tech@simpits.org
Sat, 08 Feb 2003 07:41:49 -0600
--------------000008040009030802050507
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Transfer-Encoding: 7bit
Matt,
You idea about trimming by moving the cylinder is a good one. I
sometimes make things harder than they have to be. I will revise my
design again at post it for another sanity check...
Thanks,
Keenan
Matt Bailey wrote:
>Well, venting the air as you move the stick will not only change stick
>pressure at a given control surface loading and stick position, it will
>change the centering of the stick. I'd say seal off the chambers. You don't
>really get a drifting center in real planes, just a constant amount of force
>required for a given control surface loading and control position.
>
>My idea is to have sealed chambers for the air, just adjust the air pressure
>with airspeed, rather than bleeding air off as you move the stick. So, if you
>were flying at a given airspeed and had half up-elevator, you would have to
>hold one, constant force to keep the stick at that position. If you slowed
>down, a regulator would reduce the air pressure in both chambers, hence less
>force required to hold that half up-elevator. As you released the stick,
>force would naturally be less as the stick neared center.
>
>I figured for elevator trim you could simply move the air cylinder assembly
>forward/aft.
>
> -Matt Bailey
>
>On Friday 07 February 2003 08:47, you wrote:
>
>>That was basically the thought. What are your comments (he asks, with some
>>trepidation)?
>>
>>Keenan
>>
>>
>>-----Original Message-----
>>From: Matt Bailey [mailto:mattb@rtccom.net]
>>Sent: Thursday, February 06, 2003 7:18 PM
>>To: simpits-tech@simpits.org
>>Subject: Re: [simpits-tech] May the Force Feedback be with you...
>>
>>
>>I have not been following this entire conversation, but it sounds like the
>>force feedback system by Keenan will change force required to move the
>>stick by varying the speed at which air can enter/escape an air chamber.
>>Correct? 'Cause if so, I got some comments to make. :)
>>
>> -Matt Bailey
>>
>_______________________________________________
>Simpits-tech mailing list
>Simpits-tech@simpits.org
>http://www.simpits.org/mailman/listinfo/simpits-tech
>To unsubscribe, please see the instructions at the bottom of the above page. Thanks!
>
>.
>
--------------000008040009030802050507
Content-Type: text/html; charset=us-ascii
Content-Transfer-Encoding: 7bit
<html>
<head>
</head>
<body>
Matt,<br>
<br>
You idea about trimming by moving the cylinder is a good one. I sometimes
make things harder than they have to be. I will revise my design again at
post it for another sanity check...<br>
<br>
Thanks,<br>
<br>
Keenan<br>
<br>
Matt Bailey wrote:<br>
<blockquote type="cite" cite="mid:200302080627.BAA21477@rtccom.net">
<pre wrap="">Well, venting the air as you move the stick will not only change stick <br>pressure at a given control surface loading and stick position, it will <br>change the centering of the stick. I'd say seal off the chambers. You don't <br>really get a drifting center in real planes, just a constant amount of force <br>required for a given control surface loading and control position.<br><br>My idea is to have sealed chambers for the air, just adjust the air pressure <br>with airspeed, rather than bleeding air off as you move the stick. So, if you <br>were flying at a given airspeed and had half up-elevator, you would have to <br>hold one, constant force to keep the stick at that position. If you slowed <br>down, a regulator would reduce the air pressure in both chambers, hence less <br>force required to hold that half up-elevator. As you released the stick, <br>force would naturally be less as the stick neared center.<br><br>I figured for elevator trim you could simpl
y move the air cylinder assembly <br>forward/aft.<br><br> -Matt Bailey<br><br>On Friday 07 February 2003 08:47, you wrote:<br></pre>
<blockquote type="cite">
<pre wrap="">That was basically the thought. What are your comments (he asks, with some<br>trepidation)?<br><br>Keenan<br><br><br>-----Original Message-----<br>From: Matt Bailey [<a class="moz-txt-link-freetext" href="mailto:mattb@rtccom.net">mailto:mattb@rtccom.net</a>]<br>Sent: Thursday, February 06, 2003 7:18 PM<br>To: <a class="moz-txt-link-abbreviated" href="mailto:simpits-tech@simpits.org">simpits-tech@simpits.org</a><br>Subject: Re: [simpits-tech] May the Force Feedback be with you...<br><br><br>I have not been following this entire conversation, but it sounds like the<br>force feedback system by Keenan will change force required to move the<br>stick by varying the speed at which air can enter/escape an air chamber.<br>Correct? 'Cause if so, I got some comments to make. :)<br><br> -Matt Bailey<br></pre>
</blockquote>
<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>
</blockquote>
<br>
</body>
</html>
--------------000008040009030802050507--