[simpits-tech] new video.

[Gene Buckle]

On Mon, 26 Sep 2011, Brian Sikkema wrote:

> On 9/26/2011 5:08 AM, Gene Buckle wrote:
>> This was taken last week - it's a demo of the PID controller that we
>> developed to control the mirror shape for the collimated display.
>>
>> http://www.youtube.com/watch?v=q309MyEtc3A
>>
>> g.
>>
>>
> Very cool!
>
> Question. Why did you opt for the gear setup on the servo? Could you
> have just had it controlling the gate directly? Just curious, your way
> obviously works, too.

Brian, I was concerned about the friction increase due to air pressure. 
By using a gear, I'm giving the mechanical advantage to the servo to 
overcome the extra friction caused by air pressure pressing against the 
gear.  Even so, I've got a special "lubricated" surface sheet attached to 
the top of the box that greatly reduces the friction between the gate gear 
and the box top.  It's almost teflon-like stuff.  I got it from Matt W. 
many years ago.

At some point a new bypass gate box will be built that incorporates some 
sound damping material and a more efficient bypass gate system.  For now 
though, it gets the job done.

g.


-- 
Proud owner of F-15C 80-0007
http://www.f15sim.com - The only one of its kind.
http://www.simpits.org/geneb - The Me-109F/X Project
Some people collect things for a hobby.  Geeks collect hobbies.

ScarletDME - The red hot Data Management Environment
A Multi-Value database for the masses, not the classes.
http://www.scarletdme.org - Get it _today_!

Political correctness is a doctrine, fostered by a delusional, illogical
minority, and rabidly promoted by an unscrupulous mainstream media, which
holds forth the proposition that it is entirely possible to pick up a turd
by the clean end.