[tccrockets] Re: Tripoli Rules 2012

  • From: James Dougherty <jafrado@xxxxxxxxx>
  • To: "tccrockets@xxxxxxxxxxxxx" <tccrockets@xxxxxxxxxxxxx>
  • Date: Wed, 8 Feb 2012 00:59:53 -0800

James

I see your point, but it's the method we should focus on - not the 
implementation.  In other words if you use a break-wire with a FET switch or a 
break-wire with a flight computer, it shall not be used as an initiator. 

The consequences of even an experienced HPR flier tripping on such a thing cans 
do permanent damage

Work it backwards and then it is a lot more clear ...

It's not a big deal, there are better ways to do this and Jack and I can show 
you at the next launch


-James

Sent from my iPhone

On Feb 7, 2012, at 8:57 PM, "James Eadie" <eadiefx@xxxxxxxxx> wrote:

> Jack,
>  
> I am not trying to “put more into it than what is written,” I am just trying 
> to understand the new safety code (and by extension, TCC policies.)
>  
> Maybe you can clarify for me. As you said in your earlier post, “A Rocket 
> Motor Shall not be ignited by any of the following not electronics or av bay 
> activation or timer activation A Rocket Motor.” So if any of those 
> electronics, av bays or timers are for airstarting motors, may or may not 
> they use a pull wire for arming?
>  
> Thanks,
> James Eadie
>  
> From: tccrockets-bounce@xxxxxxxxxxxxx 
> [mailto:tccrockets-bounce@xxxxxxxxxxxxx] On Behalf Of Jack Garibaldi
> Sent: Tuesday, February 07, 2012 8:30 PM
> To: tccrockets@xxxxxxxxxxxxx
> Subject: [tccrockets] Re: Tripoli Rules 2012
>  
> Interpretate as you will but anyone bringing up a rocket that a motor will be 
> lit by a pull pin, mercury switch or pressure roller will not be able to fly 
> it at TCC try not to put more into it than what is written.
>  
> Jack G
>  
> From: tccrockets-bounce@xxxxxxxxxxxxx 
> [mailto:tccrockets-bounce@xxxxxxxxxxxxx] On Behalf Of Karl Baumheckel
> Sent: Tuesday, February 07, 2012 8:08 PM
> To: tccrockets@xxxxxxxxxxxxx
> Subject: [tccrockets] Re: Tripoli Rules 2012
>  
> It is probably not safe to have electronics ignite a second stage HPR motor 
> that doesn't have a minimum altitude arm feature.  Not only that but the 
> electronics should not be armed until the complex rocket is in the upright 
> position and should be unarmed before laying down the rocket.  By the way, 
> you make a great point James.
>  
> Karl
> 
>  
>  
> From: "James Eadie" <eadiefx@xxxxxxxxx>
> To: tccrockets@xxxxxxxxxxxxx
> Sent: Tuesday, February 7, 2012 7:27:56 PM
> Subject: [tccrockets] Re: Tripoli Rules 2012
> 
> The safety code isn’t worded very well.
>  
> I think what Tripoli intended to say (as touched upon by Owen) is that break 
> wires may not be used to arm electronics which in turn ignite motors.
>  
> We all know a broken wire in itself is not going to ignite a motor.
>  
> James Eadie
>  
> From: tccrockets-bounce@xxxxxxxxxxxxx 
> [mailto:tccrockets-bounce@xxxxxxxxxxxxx] On Behalf Of Jack Garibaldi
> Sent: Tuesday, February 07, 2012 5:46 PM
> To: tccrockets@xxxxxxxxxxxxx
> Subject: [tccrockets] Re: Tripoli Rules 2012
>  
> Under 2-12.6 it says  A Rocket Motor Shall not be ignited by any of the 
> following not electronics or av bay activation or timer activation A Rocket 
> Motor
>  
> Jack G
>  
> From: tccrockets-bounce@xxxxxxxxxxxxx 
> [mailto:tccrockets-bounce@xxxxxxxxxxxxx] On Behalf Of Karl Baumheckel
> Sent: Tuesday, February 07, 2012 5:23 PM
> To: tccrockets@xxxxxxxxxxxxx
> Subject: [tccrockets] Re: Tripoli Rules 2012
>  
> That is a good question.  I would say that you could still use a breakwire 
> for timer activation.  And in my opinion this is a more reliable method than 
> the G switch for what it's worth.
> 
>  
>  
> From: "SCOTT B" <triptechb@xxxxxxxxx>
> To: tccrockets@xxxxxxxxxxxxx
> Sent: Tuesday, February 7, 2012 2:15:59 PM
> Subject: [tccrockets] Re: Tripoli Rules 2012
> 
> Would this include activation of avionics using a breakwire for low 
> speed/g-force launches, or just using breakwires for lighting motors? 
> Scotty B.
> 
> --- On Tue, 2/7/12, AiRobert <airobert@xxxxxxxxxxxxx> wrote:
> 
> From: AiRobert <airobert@xxxxxxxxxxxxx>
> Subject: [tccrockets] Re: Tripoli Rules 2012
> To: tccrockets@xxxxxxxxxxxxx
> Date: Tuesday, February 7, 2012, 11:01 AM
> 
> Yes these are switches used to for launch detect to start a second stage.
>  
> From: tccrockets-bounce@xxxxxxxxxxxxx 
> [mailto:tccrockets-bounce@xxxxxxxxxxxxx] On Behalf Of Gene Engelgau
> Sent: Tuesday, February 07, 2012 8:58 AM
> To: tccrockets@xxxxxxxxxxxxx
> Subject: [tccrockets] Re: Tripoli Rules 2012
>  
> I think a launch controller is a type of ignition system.  They may be 
> referring to cluster and staging ignition?  But yes, the TCC controller is 
> great as is...
>  
> -G
> 
> On Tue, Feb 7, 2012 at 8:24 AM, Jack Garibaldi <jackgaribaldi@xxxxxxx> wrote:
> I still haven’t read it all but either way our launch system does not use 
> none of these
>  
> Jack G
>  
> From: tccrockets-bounce@xxxxxxxxxxxxx 
> [mailto:tccrockets-bounce@xxxxxxxxxxxxx] On Behalf Of Gene Engelgau
> Sent: Tuesday, February 07, 2012 5:57 AM
> To: tccrockets@xxxxxxxxxxxxx
> Subject: [tccrockets] Re: Tripoli Rules 2012
>  
> It references the switched in regards to motor ignition and seems to refer to 
> the launch controller:
>  
> 2-12.6 A rocket motor shall not be ignited by any of the following:
> a. A switch that uses mercury.
> b. “Pull wires” that disconnect or complete a circuit.
> c. “Pressure roller” switches
>  
> ----
>  
> It does not make reference to av-bar arming switches.
>  
> -G
>  
>  
>  
> On Mon, Feb 6, 2012 at 8:38 PM, Jack Garibaldi <jackgaribaldi@xxxxxxx> wrote:
> Hey All I have attached the 2012 Tripoli sanctioned rules and we are a 
> Tripoli club so everyone needs to read them, print them carry them or however 
> you want to help enforce and use our newest rules, I will get time this week 
> to really study them but I noticed a couple of quick ones like
>  
> Section 2-18 Participation now reads in part:
> "Non-HPR Fliers are allowed in the High Power Launch Area if escorted by
> a HPR Flier. A HPR Flier may escort and be accompanied by not more than
> two (2) non-HPR fliers in the High Power Launch Area. The HPR flier
> escort is required to monitor the actions of the escorted non-HPR
> fliers, and the escort is fully responsible for those actions and for
> the safety of those escorted."
>  
> There are other changes.  For example, the use of mercury switches, pull
> wires, and roller switches have now been banned.  This means there are
> various products by different manufactures that can no longer be used
> for air-starts.
>  
>  
> I don’t want to due a review until I have had time to look the complete pages 
> over.
>  
> Jack G
> 
> 
>  
> --
> - Regards
> 
> Gene Engelgau
> KI6IBL, NAR 86770 / TRA 12243 - L3
> http://fruitychutes.com - Consumer and Aerospace Recovery Solutions
> Like us on Facebook!
> Follow us on Twitter!
> 408-499-9050
>  
> 
> 
>  
> --
> - Regards
> 
> Gene Engelgau
> KI6IBL, NAR 86770 / TRA 12243 - L3
> http://fruitychutes.com - Consumer and Aerospace Recovery Solutions
> Like us on Facebook!
> Follow us on Twitter!
> 408-499-9050
>  
> No virus found in this incoming message.
> Checked by AVG - www.avg.com
> Version: 8.5.455 / Virus Database: 271.1.1/4193 - Release Date: 02/06/12 
> 19:34:00
>  

Other related posts: