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                           AeroElectric-List Digest Archive
                                      ---
                     Total Messages Posted Sun 11/19/23: 3
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Today's Message Index:
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     1. 06:24 AM - Stainless steel Cables  (Bobby Paulk)
     2. 06:52 AM - Re: Power, signal, and Coax - How should they be bundled?  (wsimpso1)
     3. 08:08 AM - Re: Re: Power, signal, and Coax - How should they be bundled?  (Robert L. Nuckolls, III)
 
 
 
________________________________  Message 1  _____________________________________


Time: 06:24:07 AM PST US
From: Bobby Paulk <bobbypaulk@comcast.net>
Subject: AeroElectric-List: Stainless steel Cables



When I was in the Air National Guard we got F-106's. They had poor quality stainless
steel rudder cables that ran very close to the electronics bay. They soon
became magnetized and caused problems. Naturally the full time guardsmen left
the job of changing the cables to the part timers. The engine had to be pulled
and we had to climb from the cockpit to the rudder inside the fuselage and
remove the cables from all the pulleys and replace them with high quality stainless
ones. That fixed the problem.  
     Bobby
Analog guy in a digital world :=)


________________________________  Message 2  _____________________________________


Time: 06:52:55 AM PST US
Subject: AeroElectric-List: Re: Power, signal, and Coax - How should they be bundled?
From: "wsimpso1" <wsimpso1@comcast.net>


This one:

https://www.actuonix.com/p16-50-256-12-p

I calculated hinge moments on my trim tabs, and the other P-16's would back drive,
but the 256:1 was adequate. 

Doing your own homework is essential. The system has to be able to move the tab
against aero loads and then hold, ideally without feedback or power. For my purposes
this actuator, a bellcrank with mechanical advantage of 1.54, and then
my pushrod gives me the actuation force, needed travel, and supports a system
adjustable for servo through anti-servo action for the tab.

Billski


Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=512410#512410


________________________________  Message 3  _____________________________________


Time: 08:08:24 AM PST US
From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
Subject: Re: AeroElectric-List: Re: Power, signal, and Coax - How   should they
be bundled?


>Menzimer . . .  Actuonix . . . . etc


   These actuators are about as EMC friendly
   as any motor driven accessory can be. Actuators
   with 2500 pounds of push drawing 10+amps
   and themselves weighing 10 pounds are
   similarly free of EMC concerns.

   They are not potential victim or antagonist
   in the aircraft environment. You can route
   their wires with impunity. Spent a goodly
   portion of my career working with such
   devices on all manner of trim systems from
   Lears, Beechjets etc down to the T6 and Bonanzas.

   Not one of those systems required any special
   treatment for during runs through
   the EMI/EMC gauntlets during certification.
   The itty-bitty devices popular in our projects
   are no different.


   Bob . . .

                    ////
                   (o o)
    ===========o00o=(_)=o00o========
    < Go ahead, make my day . . .   >
    < show me where I'm wrong.      >
    ================================

    In the interest of creative evolution
    of the-best-we-know-how-to-do based
    on physics and good practice.

 

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