Today's Message Index:
----------------------
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
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | 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
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Power, signal, and Coax - How should they be bundled? |
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
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | 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.
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|