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Turning off the transmitter before disarming/disconnecting the motor
batteries is usually the result of a brain fart, not lack of
knowledge about the order of turning equipment on and off. The only
cure is to properly set up the failsafe.<br>
<br>
<br>
John<br>
<br>
<div class="moz-cite-prefix">On 5/17/2015 1:11 PM, David Harmon via
NSRCA-discussion wrote:<br>
</div>
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<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Comic Sans
MS";color:#1F497D">Nice sequence of events there John.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Comic Sans
MS";color:#1F497D">The whole thing could have been
prevented if the pilot had been paying attention to his
radio setup and if contest management had checked each
airplane’s throttle setup before the first round.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Comic Sans
MS";color:#1F497D">Yeah, yeah…..he should have pulled
the arming plug before he shut off the transmitter.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Comic Sans
MS";color:#1F497D">Doesn’t everyone know that the
transmitter is the first thing to turn on and the last thing
to turn off?<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Comic Sans
MS";color:#1F497D">Or do they??<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Comic Sans
MS";color:#1F497D">Apparently not!<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Comic Sans
MS";color:#1F497D"> <o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Comic Sans
MS";color:#1F497D">Someone said that there is a
surprising number of pilots that do not understand or are
unaware of detailed radio setup.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Comic Sans
MS";color:#1F497D">Most will not read the manual…..some
excuse here though as radio manuals leave a lot to be
desired.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Comic Sans
MS";color:#1F497D">In the past couple of years I have
personally witnessed a couple of really stupid and inept
setups by names that would amaze you all.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Comic Sans
MS";color:#1F497D"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><b><span
style="font-size:11.0pt;font-family:"Comic Sans
MS";color:#1F497D"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><b><span
style="font-size:11.0pt;font-family:"Comic Sans
MS";color:#1F497D">David Harmon<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span
style="font-size:11.0pt;font-family:"Comic Sans
MS";color:#1F497D">Sperry, OK<o:p></o:p></span></b></p>
</div>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Comic Sans
MS";color:#1F497D"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1
1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">
NSRCA-discussion
[<a class="moz-txt-link-freetext" href="mailto:nsrca-discussion-bounces@lists.nsrca.org">mailto:nsrca-discussion-bounces@lists.nsrca.org</a>] <b>On
Behalf Of </b>John Fuqua via NSRCA-discussion<br>
<b>Sent:</b> Sunday, May 17, 2015 1:57 PM<br>
<b>To:</b> 'General pattern discussion'<br>
<b>Subject:</b> Re: [NSRCA-discussion] Arming device<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">I
just gotta respond to this “non-existent” problem. I was
the recipient of a non-existent problem when a buddy’s plane
plowed through my plane I the pits. A young man in the
pits started to grab the plane and decided, fortunately, not
to do so. What caused this? There was 3 specific
issues. A - The fail safe was not set properly and the Tx
was turned off causing the motor to rev up. B - There was
no external arming plug to pull immediately after the plane
landed thereby disconnecting the power source and preventing
A; and C, we as a group, did not ensure positive control of
the airplane from the runway to the pit area. All things
that our pattern group enforces now.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">The
expectation is that we can come up with a solution that does
not drive a specific hardware solution BUT will prevent
things like described above.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">John<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #B5C4DF
1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Tahoma",sans-serif">From:</span></b><span
style="font-size:10.0pt;font-family:"Tahoma",sans-serif">
NSRCA-discussion [<a moz-do-not-send="true"
href="mailto:nsrca-discussion-bounces@lists.nsrca.org">mailto:nsrca-discussion-bounces@lists.nsrca.org</a>]
<b>On Behalf Of </b>Whodaddy Whodaddy via
NSRCA-discussion<br>
<b>Sent:</b> Sunday, May 17, 2015 1:14 PM<br>
<b>To:</b> Vicente Bortone; General pattern discussion<br>
<b>Subject:</b> Re: [NSRCA-discussion] Arming device<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">Im about halfway out of pattern as it
stands now.. Over intergrated rolling maneuvers in masters
.. Different debate all together though .... But it stands
next to this issue .. Apparently We cant jus go fly our
airplanes we ( pattern community ) have to medfle and
improve on things until<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">We have to invent and drive a non
existent problem to the for front and cure an issue that
doesn't exist ... <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">Jesus christ!!!!!! <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Gary<br>
<br>
Sent from my iPhone<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><br>
On May 17, 2015, at 12:47 PM, Vicente Bortone via
NSRCA-discussion <<a moz-do-not-send="true"
href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a>>
wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<p class="MsoNormal">I know a good friend local that got
very bad cuts in his legs by leaving his helicopter armed
unattended. I forgot now how many stitches but were a lot.
We got two now. We don't want more. <o:p></o:p></p>
<div>
<p class="MsoNormal">On Sun, May 17, 2015 at 12:42 PM
Scott McHarg via NSRCA-discussion <<a
moz-do-not-send="true"
href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a>>
wrote:<o:p></o:p></p>
<p class="MsoNormal">Rest in peace <b><span
style="font-size:10.0pt">Roman Pirozek Jr,</span></b><br>
<br>
On Sunday, May 17, 2015, Keith Hoard via
NSRCA-discussion <<a moz-do-not-send="true"
href="mailto:nsrca-discussion@lists.nsrca.org"
target="_blank">nsrca-discussion@lists.nsrca.org</a>>
wrote:<o:p></o:p></p>
<div>
<div>
<div>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">Y'all
don't hang around helicopter fly-ins much, do
ya?<br>
<br>
-Keith Hoard<br>
-Sent from my Windows Phone<o:p></o:p></span></p>
</div>
</div>
<div>
<div class="MsoNormal" style="text-align:center"
align="center">
<hr align="center" size="2" width="100%"></div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:
</span></b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">Ronald
Van Putte via NSRCA-discussion</span><br>
<b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">Sent:
</span></b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">5/17/2015
12:08</span><br>
<b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">To:
</span></b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">General
pattern discussion</span><br>
<b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">Subject:
</span></b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">Re:
[NSRCA-discussion] Arming device</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">Yeah! Even if we are capable of
causing carnage with our unsafe airplane, it’s
nobody else’s business. Don’t mess with my
airplane! <o:p></o:p></p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Ron (with tongue in cheek)<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<blockquote
style="margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<p class="MsoNormal">On May 17, 2015, at 11:30
AM, Keith Hoard via NSRCA-discussion <<a
moz-do-not-send="true"
href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a>>
wrote:<o:p></o:p></p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div>
<div>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">Pattern
is turning into a box checking,
over-regulated government operation.<br>
<br>
-Keith Hoard<br>
-Sent from my Windows Phone<o:p></o:p></span></p>
</div>
</div>
<div>
<div class="MsoNormal"
style="text-align:center" align="center"><span
style="font-size:10.5pt;font-family:"ArialMS",serif">
<hr align="center" size="2" width="100%"></span></div>
<p class="MsoNormal"
style="margin-bottom:12.0pt"><b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">From: </span></b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">Vicente
Bortone via NSRCA-discussion</span><span
style="font-size:10.5pt;font-family:"ArialMS",serif"><br>
</span><b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">Sent: </span></b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">5/17/2015
9:04</span><span
style="font-size:10.5pt;font-family:"ArialMS",serif"><br>
</span><b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">To: </span></b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">David
Harmon; General pattern discussion</span><span
style="font-size:10.5pt;font-family:"ArialMS",serif"><br>
</span><b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">Subject: </span></b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">[NSRCA-discussion]
Arming device</span><span
style="font-size:10.5pt;font-family:"ArialMS",serif"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"
style="margin-bottom:12.0pt"><span
style="font-size:10.5pt;font-family:"ArialMS",serif">TAG
IN.....<br>
<br>
Hi Dave,<br>
<br>
I started to do that in my contest in
Kansas City last year. This year in
pilot meeting I said. " If you don't do
it the first round will be zeroed. Well
I think worked well"<br>
<br>
John F.<br>
<br>
You just made my day. I do more or less
the same you do. I review a lot of
projects. Clearly will all here analyzed
the system and we know the steps could
be used to mitigate a possible
situation. That is the end of discussion
in cases like this. Just give me a real
possibility of tag in and tag out.<br>
<br>
Jon,<br>
<br>
Good research. Now you have to find what
is the code that applies to model
airplanes. I knew that there is no one
specific code. However existing codes
applies for similar systems. If all if
them arrives to the same conclusion we
will be in better shape if we just
follow the intent of all codes you can
find. Now try to find the specifics for
a system similar to the one we have. I
already know the answer so I don't need
to ask our friend Google.<br>
<br>
TAG OUT <o:p></o:p></span></p>
<div>
<p class="MsoNormal"><span
style="font-size:10.5pt;font-family:"ArialMS",serif"><br>
<br>
On Saturday, May 16, 2015, David
Harmon via NSRCA-discussion <<a
moz-do-not-send="true"
href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a>>
wrote:<o:p></o:p></span></p>
</div>
<div>
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<p class="MsoNormal"><span
style="font-size:10.5pt;font-family:"ArialMS",serif">With
as much talk that has gone on and on
andonandonandonandon about this<br>
arming device......puff..puff....not
much percentage.<br>
Especially when it is so easy to
check.....<br>
Before the first takeoff of each
pilot on the first round....the
helper<br>
holds the plane off the ground and
the pilot turns off the transmitter.<br>
The judges can verify that the motor
does not start.<br>
Easy....no drama.<br>
<br>
Oh wait....this was never done with
glow....but I HAVE seen several guys<br>
chawed up by a howling YS.<br>
One time a guys airplane chased him
in a circle as he was trying to
catch<br>
it...he had one leg in front of one
wing and for an old guy he moved
pretty<br>
quick.<br>
I can't describe how long I laughed
about that incident.<br>
<br>
In the end....my opinion is checking
the fail-safe function should be a
must<br>
at each contest.<br>
<br>
David Harmon<br>
Sperry, OK<br>
<br>
-----Original Message-----<o:p></o:p></span></p>
</blockquote>
</div>
<div>
<blockquote
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<p class="MsoNormal"><span
style="font-size:10.5pt;font-family:"ArialMS",serif">From:
NSRCA-discussion [<a
moz-do-not-send="true"
href="mailto:nsrca-discussion-bounces@lists.nsrca.org">mailto:nsrca-discussion-bounces@lists.nsrca.org</a>]
On<o:p></o:p></span></p>
</blockquote>
</div>
<div>
<blockquote
style="border:none;border-left:solid
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<p class="MsoNormal"><span
style="font-size:10.5pt;font-family:"ArialMS",serif">Behalf
Of Ron Van Putte via
NSRCA-discussion<br>
Sent: Saturday, May 16, 2015 4:58 PM<o:p></o:p></span></p>
</blockquote>
</div>
<div>
<blockquote
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<p class="MsoNormal"
style="margin-bottom:12.0pt"><span
style="font-size:10.5pt;font-family:"ArialMS",serif"><br>
To: General pattern discussion<br>
Subject: Re: [NSRCA-discussion]
Arming device<o:p></o:p></span></p>
</blockquote>
</div>
<div>
<blockquote
style="border:none;border-left:solid
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<p class="MsoNormal"><span
style="font-size:10.5pt;font-family:"ArialMS",serif">I
have seen too many situations where
an ID10T error caused serious damage<br>
that would have been precluded by
the use of a shorting plug.<br>
<br>
What percentage of pilots’
transmitters would fail the fail
safe test?<br>
Anybody?<br>
<br>
Ron Van Putte<br>
<br>
On May 16, 2015, at 4:08 PM,
Whodaddy Whodaddy via
NSRCA-discussion<br>
<<a moz-do-not-send="true"
href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a>>
wrote:<br>
<br>
> Seems like we have to many
people with to much time on their
hands sitting<br>
around fantasizing about what might
happen if .... Really.... if u cant<br>
control the aircraft in all aspects
then u prolly shouldn't have one...
Let<br>
alone legislate what i need to be
doing with mine...<br>
><br>
><br>
> Gary<br>
><o:p></o:p></span></p>
</blockquote>
</div>
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<p class="MsoNormal"><span
style="font-size:10.5pt;font-family:"ArialMS",serif">>
Sent from my iPhone<br>
><o:p></o:p></span></p>
</blockquote>
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<p class="MsoNormal"><span
style="font-size:10.5pt;font-family:"ArialMS",serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span
style="font-size:10.5pt;font-family:"ArialMS",serif">>>
On May 16, 2015, at 3:58 PM, Jon
Lowe via NSRCA-discussion<o:p></o:p></span></p>
</blockquote>
</div>
<div>
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<p class="MsoNormal"><span
style="font-size:10.5pt;font-family:"ArialMS",serif"><<a
moz-do-not-send="true"
href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a>>
wrote:<br>
>><br>
>> Code doesn't apply to model
airplanes. Cars do not disconnect
the<br>
battery, except on race cars with a
disconnect switch in case of a
wreck.<br>
Normal road cars do not, and modern
cars leave a lot of things connected<br>
when the ignition is off. A lot of
cars have underhood fans that run
for<br>
awhile after the car is shut off.<br>
>><br>
>> If this was a big issue,
AMA would address it with all model
aircraft,<br>
not just pattern. Electric is common
in helis, controline, etc. We are
over<br>
killing this something awful.<br>
>><br>
>> Jon<br>
>><br>
>>> On May 16, 2015 2:11
PM, Vicente Bortone via
NSRCA-discussion<br>
<<a moz-do-not-send="true"
href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a>>
wrote:<br>
>>><br>
>>> the ignition switch.<br>
>>><br>
>>>> On Saturday, May
16, 2015, Vicente Bortone <<a
moz-do-not-send="true"
href="mailto:vincebrc@gmail.com">vincebrc@gmail.com</a>>
wrote:<br>
>>>><br>
>>>><br>
>>>><br>
>>>>> On Saturday,
May 16, 2015, Del R via
NSRCA-discussion<br>
<<a moz-do-not-send="true"
href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a>>
wrote:<br>
>>>>><br>
>>>>> The nice thing
about being brought up around GUNS..
It teaches<br>
>>>>> people to
respect it always as though it is
loaded and cocked<br>
>>>>> ready to
deliver its physical life altering
energy!!!.. < tic ><br>
>>>>><br>
>>>>><br>
>>>>>><br>
>>>>>> -----
Original Message -----<br>
>>>>>> From: David
Cook via NSRCA-discussion<br>
>>>>>> To: Jim
Woodward ; General pattern
discussion<br>
>>>>>> Sent:
Saturday, May 16, 2015 10:48 AM<br>
>>>>>> Subject:
Re: [NSRCA-discussion] Arming device<br>
>>>>>><br>
>>>>>> Just to
open the can of worms from the other
end.<br>
>>>>>> Now that I
have seen the damage a runaway can
do to a pool table even<br>
with an external arming device, I
have begun to make it a common
practice to<br>
remove the prop from the electric
planes any time I am not at the
field<br>
flying. Store the ammunition and the
pin under two different locks. How
easy<br>
is it to be careless in the shop or
transporting a plane. This thread
could<br>
just explode with stories of mishaps
we have made or come way too close
to.<br>
>>>>>> You just
can't be too carful with these
things!!!<br>
>>>>>> DC<br>
>>>>>><br>
>>>>>>> On Sat,
May 16, 2015 at 10:21 AM, Jim
Woodward via NSRCA-discussion<br>
<<a moz-do-not-send="true"
href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a>>
wrote:<br>
>>>>>>><br>
>>>>>>> ...
Going electric induces a mental
physchosis that requires<br>
>>>>>>>
everyone else to switch, then go and
change the rules for glow<br>
>>>>>>> :)<br>
>>>>>>><br>
>>>>>>> Sent
from my iPhone<br>
>>>>>>><br>
>>>>>>>> On
May 16, 2015, at 9:38 AM, Keith
Hoard via NSRCA-discussion<br>
<<a moz-do-not-send="true"
href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a>>
wrote:<br>
>>>>>>>><br>
>>>>>>>> I
think the YS guys should have their
caller remove the fuel tank<br>
and glow plug before picking up the
plane and exiting the runway . . .<br>
>>>>>>>><br>
>>>>>>>><br>
>>>>>>>><br>
>>>>>>>>
From: NSRCA-discussion<br>
>>>>>>>> [<a
moz-do-not-send="true"
href="mailto:nsrca-discussion-bounces@lists.nsrca.org">mailto:nsrca-discussion-bounces@lists.nsrca.org</a>]
On Behalf Of<br>
>>>>>>>>
precisionaero via NSRCA-discussion<br>
>>>>>>>>
Sent: Saturday, May 16, 2015 8:38 AM<br>
>>>>>>>> To:
General pattern discussion<br>
>>>>>>>>
Subject: Re: [NSRCA-discussion]
Arming device<br>
>>>>>>>><br>
>>>>>>>><br>
>>>>>>>><br>
>>>>>>>> I
think we should reconfigure a YS
engine to drive a generator to<br>
supply electricity to the electric
motor.<br>
>>>>>>>><br>
>>>>>>>><br>
>>>>>>>><br>
>>>>>>>><br>
>>>>>>>><br>
>>>>>>>>
Sent via the Samsung Galaxy S™ III,
an AT&T 4G LTE smartphone<br>
>>>>>>>><br>
>>>>>>>><br>
>>>>>>>><br>
>>>>>>>>
-------- Original message --------<br>
>>>>>>>><br>
>>>>>>>>
From: Peter Vogel via
NSRCA-discussion<br>
>>>>>>>><br>
>>>>>>>>
Date:05/16/2015 09:31 (GMT-05:00)<br>
>>>>>>>><br>
>>>>>>>> To:
General pattern discussion , <a
moz-do-not-send="true"
href="mailto:ronlock@comcast.net">ronlock@comcast.net</a>,
David<br>
>>>>>>>><br>
>>>>>>>>
Subject: Re: [NSRCA-discussion]
Arming device<br>
>>>>>>>><br>
>>>>>>>><br>
>>>>>>>><br>
>>>>>>>> I
think we're all in agreement, which
is why the rules proposal we<br>
put forth requires a *physical*
break in the circuit!<br>
>>>>>>>><br>
>>>>>>>>
Sent from Outlook<br>
>>>>>>>><br>
>>>>>>>><br>
>>>>>>>><br>
>>>>>>>><br>
>>>>>>>><br>
>>>>>>>>>
On Sat, May 16, 2015 at 6:16 AM
-0700, "ronlock--- via<br>
NSRCA-discussion" <<a
moz-do-not-send="true"
href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a>>
wrote:<br>
>>>>>>>>><br>
>>>>>>>>>
I'm in agreement.<br>
>>>>>>>>><br>
>>>>>>>>>
Ron Lockhart<br>
>>>>>>>>><br>
>>>>>>>>><br>
>>>>>>>>><br>
>>>>>>>>>
________________________________<br>
>>>>>>>>><br>
>>>>>>>>>
From: "David via NSRCA-discussion"<br>
>>>>>>>>>
<<a moz-do-not-send="true"
href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a>><br>
>>>>>>>>>
To: <a moz-do-not-send="true"
href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a><br>
>>>>>>>>>
Sent: Saturday, May 16, 2015 1:14:21
AM<br>
>>>>>>>>>
Subject: [NSRCA-discussion] Arming
device<br>
>>>>>>>>><br>
>>>>>>>>><br>
>>>>>>>>><br>
>>>>>>>>>
I'm not trying to bring up a sore
subject but this has been<br>
bugging me since it was up a while
back. I am the senior electronics<br>
technician in the plasma physics
department at the University of
Wisconsin.<br>
About a third of what I do is make
interlock circuits for the Madison<br>
Symmetric Torus. I know that the
best way of keeping things safe is
to<br>
remove the potential energy from a
circuit to keep bad things from<br>
happening. The problem with
depending on a circuit such as the
emcotec type<br>
of disconnect or to just relying
solely on the radio and ESC to keep
things<br>
safe is failure modes. You can plan
for all different failure types but
to<br>
make it a circuit that isn't a lead
brick being added to the plane there
are<br>
compromises that have to be made.
This leads to designing systems that
may<br>
deal with only the most common types
of failures. For example most common<br>
diodes and tantalum capacitors
usually fail in a shorted mode, but
not<br>
always. Many carbon resistors will
decrease in résistance just prior to<br>
opening up. You get the idea, there
are just so many possibilities and<br>
combinations that in my opinion the
only real way to safe a power system
is<br>
to disconnect the energy source. Ok,
now I feel better that I said<br>
something.<br>
>>>>>>>>><br>
>>>>>>>>><br>
>>>>>>>>><br>
>>>>>>>>>
David<br>
>>>>>>>>><br>
>>>>>>>>><br>
>>>>>>>>><br>
>>>>>>>>><br>
>>>>>>>>>
_______________________________________________<br>
>>>>>>>>>
NSRCA-discussion mailing list<br>
>>>>>>>>> <a moz-do-not-send="true"
href="mailto:NSRCA-discussion@lists.nsrca.org">NSRCA-discussion@lists.nsrca.org</a><br>
>>>>>>>>> <a moz-do-not-send="true"
href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion"
target="_blank">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><br>
>>>>>>>><br>
>>>>>>>>
_______________________________________________<br>
>>>>>>>>
NSRCA-discussion mailing list<br>
>>>>>>>> <a
moz-do-not-send="true"
href="mailto:NSRCA-discussion@lists.nsrca.org">NSRCA-discussion@lists.nsrca.org</a><br>
>>>>>>>> <a
moz-do-not-send="true"
href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion"
target="_blank">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><br>
>>>>>>><br>
>>>>>>><br>
>>>>>>>
_______________________________________________<br>
>>>>>>>
NSRCA-discussion mailing list<br>
>>>>>>> <a
moz-do-not-send="true"
href="mailto:NSRCA-discussion@lists.nsrca.org">NSRCA-discussion@lists.nsrca.org</a><br>
>>>>>>> <a
moz-do-not-send="true"
href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion"
target="_blank">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><br>
>>>>>><br>
>>>>>><br>
>>>>>>
________________________________<br>
>>>>>><br>
>>>>>>
_______________________________________________<br>
>>>>>>
NSRCA-discussion mailing list<br>
>>>>>> <a
moz-do-not-send="true"
href="mailto:NSRCA-discussion@lists.nsrca.org">NSRCA-discussion@lists.nsrca.org</a><br>
>>>>>> <a
moz-do-not-send="true"
href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion"
target="_blank">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><br>
>>>><br>
>>>><br>
>>>><br>
>>>> --<br>
>>>> Vicente "Vince"
Bortone<br>
>>><br>
>>><br>
>>><br>
>>> --<br>
>>> Vicente "Vince" Bortone<br>
>>
_______________________________________________<br>
>> NSRCA-discussion mailing
list<br>
>> <a moz-do-not-send="true"
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href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion"
target="_blank">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><br>
>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><br>
<br>
-- <o:p></o:p></p>
<div>
<div>
<div>
<p class="MsoNormal"><b><span
style="font-size:13.5pt;font-family:"Comic
Sans MS";color:#3333FF">Scott A. McHarg</span></b><o:p></o:p></p>
<div>
<p class="MsoNormal">VSCL / CANVASS U.A.S.
Research Pilot<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">Texas A&M University<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">PPL - ASEL<o:p></o:p></p>
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<p class="MsoNormal"><br>
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<br>
<pre wrap="">_______________________________________________
NSRCA-discussion mailing list
<a class="moz-txt-link-abbreviated" href="mailto:NSRCA-discussion@lists.nsrca.org">NSRCA-discussion@lists.nsrca.org</a>
<a class="moz-txt-link-freetext" href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a></pre>
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