[NSRCA-discussion] Arming device

Sat May 16 14:17:42 AKDT 2015

On Saturday, May 16, 2015, Del R via NSRCA-discussion <
nsrca-discussion at lists.nsrca.org> wrote:

>  The nice thing about being brought up around GUNS.. It teaches people to
> respect it always as though it is loaded and cocked ready to deliver its
> physical life altering energy!!!.. < tic >
>
>
>
> ----- Original Message -----
> *From:* David Cook via NSRCA-discussion
> <javascript:_e(%7B%7D,'cvml','nsrca-discussion at lists.nsrca.org');>
> *To:* Jim Woodward
> <javascript:_e(%7B%7D,'cvml','jimwoodward89 at gmail.com');> ; General
> pattern discussion
> <javascript:_e(%7B%7D,'cvml','nsrca-discussion at lists.nsrca.org');>
> *Sent:* Saturday, May 16, 2015 10:48 AM
> *Subject:* Re: [NSRCA-discussion] Arming device
>
>  Just to open the can of worms from the other end.
> Now that I have seen the damage a runaway can do to a pool table even with
> an external arming device, I have begun to make it a common practice to
> remove the prop from the electric planes any time I am not at the field
> flying. Store the ammunition and the pin under two different locks. How
> easy is it to be careless in the shop or transporting a plane. This thread
> could just explode with stories of mishaps we have made or come way too
> close to.
> You just can't be too carful with these things!!!
> DC
>
> On Sat, May 16, 2015 at 10:21 AM, Jim Woodward via NSRCA-discussion <
> nsrca-discussion at lists.nsrca.org
> <javascript:_e(%7B%7D,'cvml','nsrca-discussion at lists.nsrca.org');>> wrote:
>
>>  ... Going electric induces a mental physchosis that requires everyone
>> else to switch, then go and change the rules for glow :)
>>
>> Sent from my iPhone
>>
>> On May 16, 2015, at 9:38 AM, Keith Hoard via NSRCA-discussion <
>> nsrca-discussion at lists.nsrca.org
>> <javascript:_e(%7B%7D,'cvml','nsrca-discussion at lists.nsrca.org');>>
>> wrote:
>>
>>   I think the YS guys should have their caller remove the fuel tank and
>> glow plug before picking up the plane and exiting the runway  . . .
>>
>>
>>
>> *From:* NSRCA-discussion [mailto:nsrca-discussion-bounces at lists.nsrca.org
>> <javascript:_e(%7B%7D,'cvml','nsrca-discussion-bounces at lists.nsrca.org');>]
>> *On Behalf Of *precisionaero via NSRCA-discussion
>> *Sent:* Saturday, May 16, 2015 8:38 AM
>> *To:* General pattern discussion
>> *Subject:* Re: [NSRCA-discussion] Arming device
>>
>>
>>
>> I think we should reconfigure a YS engine to drive a generator to supply
>> electricity to the electric motor.
>>
>>
>>
>>
>>
>> Sent via the Samsung Galaxy S™ III, an AT&T 4G LTE smartphone
>>
>>
>>
>> -------- Original message --------
>>
>> From: Peter Vogel via NSRCA-discussion
>>
>> Date:05/16/2015 09:31 (GMT-05:00)
>>
>> To: General pattern discussion , ronlock at comcast.net
>> <javascript:_e(%7B%7D,'cvml','ronlock at comcast.net');>, David
>>
>> Subject: Re: [NSRCA-discussion] Arming device
>>
>>
>>
>> I think we're all in agreement, which is why the rules proposal we put
>> forth requires a *physical* break in the circuit!
>>
>> Sent from Outlook <http://taps.io/outlookmobile>
>>
>>
>>
>>
>>
>>  On Sat, May 16, 2015 at 6:16 AM -0700, "ronlock--- via
>> NSRCA-discussion" <nsrca-discussion at lists.nsrca.org
>> <javascript:_e(%7B%7D,'cvml','nsrca-discussion at lists.nsrca.org');>>
>> wrote:
>>
>>   I'm in agreement.
>>
>> Ron Lockhart
>>
>>
>>  ------------------------------
>>
>> *From: *"David via NSRCA-discussion" <nsrca-discussion at lists.nsrca.org
>> <javascript:_e(%7B%7D,'cvml','nsrca-discussion at lists.nsrca.org');>>
>> *To: *nsrca-discussion at lists.nsrca.org
>> <javascript:_e(%7B%7D,'cvml','nsrca-discussion at lists.nsrca.org');>
>> *Sent: *Saturday, May 16, 2015 1:14:21 AM
>> *Subject: *[NSRCA-discussion] Arming device
>>
>>
>>
>> I'm not trying to bring up a sore subject but this has been bugging me
>> since it was up a while back. I am the senior electronics technician in the
>> plasma physics department at the University of Wisconsin. About a third of
>> what I do is make interlock circuits for the Madison Symmetric Torus. I
>> know that the best way of keeping things safe is to remove the potential
>> energy from a circuit to keep bad things from happening. The problem with
>> depending on a circuit such as the emcotec type of disconnect or to just
>> relying solely on the radio and ESC to keep things safe is failure modes.
>> You can plan for all different failure types but to make it a circuit that
>> isn't a lead brick being added to the plane there are compromises that have
>> to be made. This leads to designing systems that may deal with only the
>> most common types of failures. For example most common diodes and tantalum
>> capacitors usually fail in a shorted mode, but not always. Many carbon
>> resistors will decrease in résistance just prior to opening up. You get the
>> idea, there are just so many possibilities and combinations that in my
>> opinion the only real way to safe a power system is to disconnect the
>> energy source. Ok, now I feel better that I said something.
>>
>>
>>
>> David
>>
>>
>>
>>
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>>
>>
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>
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-- 
Vicente "Vince" Bortone
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