From arnold.roquerre at verizon.net Sat Aug 1 12:04:32 2009 From: arnold.roquerre at verizon.net (Arnold) Date: Sat, 01 Aug 2009 15:04:32 -0400 Subject: [ARTS] FW: ARTS arming position In-Reply-To: <004601ca124d$7bf47300$73dd5900$@com> References: <000001ca123e$f29f9f20$d7dedd60$@roquerre@verizon.net> <004601ca124d$7bf47300$73dd5900$@com> Message-ID: <001501ca12da$e7c29520$b747bf60$@roquerre@verizon.net> Jason, I have an account which I set up years back. I bought a zillion high gee reeds at that time. Somehow, I am now down to 6. I have used them in RC toys, business, security, remote control, you name it. They all work. Since they are made to not activate from vibration, gees are not a problem. It really comes down to your needs. I use reeds that I installed into my own packages which requires soldering or shrink wrapping. You need to call and tell them that you want to buy just the reed switches with or without leads and with or without both leads (they will cut one for you). The links below are some I have used. If you exceed amperage the unit locks closed once armed. This is good for one time applications. I have used this approach, but if you need to power down, your screwed unless you have the bay designed for slide in slide out switching. If you get creative, you can use the magnets to power up the electronics until launch time, which comes in handy for long preps and limited on board power. http://www.grisk.com/surface_mount/pdf/500%20Series.pdf http://www.grisk.com/surface_mount/100.htm http://www.grisk.com/recessed/mighty_mag.htm http://www.grisk.com/surface_mount/505.htm http://www.grisk.com/surface_mount/pdf/100-110%20series.pdf I just edited the flight I posted before I left the country. Long flights are good for editing video. Anyway, I have posted the final version - http://www.youtube.com/watch?v=6czamPHPjpY. In the video you can see that even when the video camera slipped and broke the antenna, the magnetic switching worked as it did on the RDAS power supply. The bay took some serious vibration. If you check the graph, you can see there was a lot of vibration and still no connection problem from the switch. Channel 5 recorded the x axis. Channel 1 was recorded power. Arnold From: arts-bounces at lokiresearch.com [mailto:arts-bounces at lokiresearch.com] On Behalf Of Jason Andersen Sent: Friday, July 31, 2009 10:12 PM To: arts at lokiresearch.com Subject: Re: [ARTS] FW: ARTS arming position Hi Arnold, What switch do you use? The http://www.grisk.com/recessed/2120-12.htm ? I'm only guessing.... Specifics are always good. J Thanks, Jason <<<<< Always looking for a better switch option.. From: arts-bounces at lokiresearch.com [mailto:arts-bounces at lokiresearch.com] On Behalf Of Arnold Sent: Friday, July 31, 2009 6:28 PM To: arts at lokiresearch.com; 'Arnold' Subject: [ARTS] FW: ARTS arming position The rocket in the video at http://www.youtube.com/watch?v=8n_WIc_EOAw contained two magnetic switches. The RDAS was activated by a magnetic switch as was the video camera. Unfortunately, the antenna was damaged after the video unit slipped in the frame. I was able to find a viewable frame at 16000', but for all purposes the video ends at about 600'. The RDAS transmitted never lost power even though the patch antenna was dislodged at apogee, it still gave me GPS coordinates. In short, the magnetic switch is robust. I always position the switch so open end of the reed is facing up and open when the magnet is removed. I usually buy my switches from GRI - http://www.grisk.com/. From: Tomsrockets at aol.com [mailto:Tomsrockets at aol.com] Sent: Monday, July 27, 2009 12:15 PM To: arnold.roquerre at verizon.net; arts at lokiresearch.com Subject: Re: [ARTS] ARTS arming position Thanks all for your help. The magnetic switch may work for our application. Any particular manufacture or product number of magnetic switch you have used and found to be reliable? Thank you Tom Ciolino In a message dated 7/26/2009 10:16:17 A.M. Central Daylight Time, arnold.roquerre at verizon.net writes: I have found magnetic switches very useful. They have a high gee rating and are very easy to arm. You simply pull off the magnet. I have never had a failure using magnetic switches. The basic reed model with no housing is the most flexible, but the standard model works. One just has to remember to use the normally open terminals since the switch is to remain open while the magnet is present and closed when removed. The only limitation is you can only run 1 amp through them. For higher amperage there are ones available, but they are more expensive. I have found having the reed activate other high gee relays an easy work around. ----- Original Message ----- From: Tomsrockets at aol.com To: arts at lokiresearch.com Sent: Sunday, July 26, 2009 7:45 AM Subject: [ARTS] ARTS arming position I am helping out with a project that involves a tall rocket. Issue is trying to find a way to arm electronics without having a 12 foot ladder on the Black Rock playa. I know the ARTS manual states that the altimeter should only be armed in the upright firing position. How does the ARTS determine its' baseline position upon arming, and how would arming the altimeter in the horizontal position cause problems after launch? What is the minimum G force or acceleration required to put it into flight mode? Thanks Tom Ciolino _____ _____ _______________________________________________ ARTS mailing list ARTS at lokiresearch.com http://mx1.blastzone.com/mailman/listinfo/arts _____ -------------- next part -------------- An HTML attachment was scrubbed... URL: http://mx1.blastzone.com/pipermail/arts/attachments/20090801/95394fd7/attachment.htm From dwright at d2-tech.com Sat Aug 1 12:33:03 2009 From: dwright at d2-tech.com (Darren Wright) Date: Sat, 1 Aug 2009 15:33:03 -0400 Subject: [ARTS] FW: ARTS arming position In-Reply-To: <001501ca12da$e7c29520$b747bf60$@roquerre@verizon.net> References: <000001ca123e$f29f9f20$d7dedd60$@roquerre@verizon.net> <004601ca124d$7bf47300$73dd5900$@com> <001501ca12da$e7c29520$b747bf60$@roquerre@verizon.net> Message-ID: <1A7F347BAE4D7A48B8BFF0D853842A5701D90C0BD7A9@NEWDEHLI.dg2k.com> Are there actually G limits published? From: arts-bounces at lokiresearch.com [mailto:arts-bounces at lokiresearch.com] On Behalf Of Arnold Sent: Saturday, August 01, 2009 3:05 PM To: 'Jason Andersen'; arts at lokiresearch.com Subject: Re: [ARTS] FW: ARTS arming position Jason, I have an account which I set up years back. I bought a zillion high gee reeds at that time. Somehow, I am now down to 6. I have used them in RC toys, business, security, remote control, you name it. They all work. Since they are made to not activate from vibration, gees are not a problem. It really comes down to your needs. I use reeds that I installed into my own packages which requires soldering or shrink wrapping. You need to call and tell them that you want to buy just the reed switches with or without leads and with or without both leads (they will cut one for you). The links below are some I have used. If you exceed amperage the unit locks closed once armed. This is good for one time applications. I have used this approach, but if you need to power down, your screwed unless you have the bay designed for slide in slide out switching. If you get creative, you can use the magnets to power up the electronics until launch time, which comes in handy for long preps and limited on board power. http://www.grisk.com/surface_mount/pdf/500%20Series.pdf http://www.grisk.com/surface_mount/100.htm http://www.grisk.com/recessed/mighty_mag.htm http://www.grisk.com/surface_mount/505.htm http://www.grisk.com/surface_mount/pdf/100-110%20series.pdf I just edited the flight I posted before I left the country. Long flights are good for editing video. Anyway, I have posted the final version - http://www.youtube.com/watch?v=6czamPHPjpY. In the video you can see that even when the video camera slipped and broke the antenna, the magnetic switching worked as it did on the RDAS power supply. The bay took some serious vibration. If you check the graph, you can see there was a lot of vibration and still no connection problem from the switch. Channel 5 recorded the x axis. Channel 1 was recorded power. Arnold From: arts-bounces at lokiresearch.com [mailto:arts-bounces at lokiresearch.com] On Behalf Of Jason Andersen Sent: Friday, July 31, 2009 10:12 PM To: arts at lokiresearch.com Subject: Re: [ARTS] FW: ARTS arming position Hi Arnold, What switch do you use? The http://www.grisk.com/recessed/2120-12.htm ? I'm only guessing........ Specifics are always good. :) Thanks, Jason <<<<< Always looking for a better switch option.. From: arts-bounces at lokiresearch.com [mailto:arts-bounces at lokiresearch.com] On Behalf Of Arnold Sent: Friday, July 31, 2009 6:28 PM To: arts at lokiresearch.com; 'Arnold' Subject: [ARTS] FW: ARTS arming position The rocket in the video at http://www.youtube.com/watch?v=8n_WIc_EOAw contained two magnetic switches. The RDAS was activated by a magnetic switch as was the video camera. Unfortunately, the antenna was damaged after the video unit slipped in the frame. I was able to find a viewable frame at 16000', but for all purposes the video ends at about 600'. The RDAS transmitted never lost power even though the patch antenna was dislodged at apogee, it still gave me GPS coordinates. In short, the magnetic switch is robust. I always position the switch so open end of the reed is facing up and open when the magnet is removed. I usually buy my switches from GRI - http://www.grisk.com/. From: Tomsrockets at aol.com [mailto:Tomsrockets at aol.com] Sent: Monday, July 27, 2009 12:15 PM To: arnold.roquerre at verizon.net; arts at lokiresearch.com Subject: Re: [ARTS] ARTS arming position Thanks all for your help. The magnetic switch may work for our application. Any particular manufacture or product number of magnetic switch you have used and found to be reliable? Thank you Tom Ciolino In a message dated 7/26/2009 10:16:17 A.M. Central Daylight Time, arnold.roquerre at verizon.net writes: I have found magnetic switches very useful. They have a high gee rating and are very easy to arm. You simply pull off the magnet. I have never had a failure using magnetic switches. The basic reed model with no housing is the most flexible, but the standard model works. One just has to remember to use the normally open terminals since the switch is to remain open while the magnet is present and closed when removed. The only limitation is you can only run 1 amp through them. For higher amperage there are ones available, but they are more expensive. I have found having the reed activate other high gee relays an easy work around. ----- Original Message ----- From: Tomsrockets at aol.com To: arts at lokiresearch.com Sent: Sunday, July 26, 2009 7:45 AM Subject: [ARTS] ARTS arming position I am helping out with a project that involves a tall rocket. Issue is trying to find a way to arm electronics without having a 12 foot ladder on the Black Rock playa. I know the ARTS manual states that the altimeter should only be armed in the upright firing position. How does the ARTS determine its' baseline position upon arming, and how would arming the altimeter in the horizontal position cause problems after launch? What is the minimum G force or acceleration required to put it into flight mode? Thanks Tom Ciolino ________________________________ ________________________________ _______________________________________________ ARTS mailing list ARTS at lokiresearch.com http://mx1.blastzone.com/mailman/listinfo/arts ________________________________ -------------- next part -------------- An HTML attachment was scrubbed... URL: http://mx1.blastzone.com/pipermail/arts/attachments/20090801/45cd03a5/attachment-0001.htm From arnold.roquerre at verizon.net Sat Aug 1 16:03:29 2009 From: arnold.roquerre at verizon.net (Arnold) Date: Sat, 01 Aug 2009 19:03:29 -0400 Subject: [ARTS] FW: ARTS arming position In-Reply-To: <1A7F347BAE4D7A48B8BFF0D853842A5701D90C0BD7A9@NEWDEHLI.dg2k.com> References: <000001ca123e$f29f9f20$d7dedd60$@roquerre@verizon.net> <004601ca124d$7bf47300$73dd5900$@com> <001501ca12da$e7c29520$b747bf60$@roquerre@verizon.net> <1A7F347BAE4D7A48B8BFF0D853842A5701D90C0BD7A9@NEWDEHLI.dg2k.com> Message-ID: <003c01ca12fc$493c0810$dbb41830$@roquerre@verizon.net> When you call you can get the information on the gees a given switch has been tested for. A lot of switches are used in military equipment and security situations were vibrations are common. My first batch were very expensive because I ordered high gee switches. In truth, the cheap ones work just fine. Article on ratings used: http://www.hamlin.com/specSheets/AN111A-Tech-Shock.pdf From: arts-bounces at lokiresearch.com [mailto:arts-bounces at lokiresearch.com] On Behalf Of Darren Wright Sent: Saturday, August 01, 2009 3:33 PM To: 'arts at lokiresearch.com' Subject: Re: [ARTS] FW: ARTS arming position Are there actually G limits published? From: arts-bounces at lokiresearch.com [mailto:arts-bounces at lokiresearch.com] On Behalf Of Arnold Sent: Saturday, August 01, 2009 3:05 PM To: 'Jason Andersen'; arts at lokiresearch.com Subject: Re: [ARTS] FW: ARTS arming position Jason, I have an account which I set up years back. I bought a zillion high gee reeds at that time. Somehow, I am now down to 6. I have used them in RC toys, business, security, remote control, you name it. They all work. Since they are made to not activate from vibration, gees are not a problem. It really comes down to your needs. I use reeds that I installed into my own packages which requires soldering or shrink wrapping. You need to call and tell them that you want to buy just the reed switches with or without leads and with or without both leads (they will cut one for you). The links below are some I have used. If you exceed amperage the unit locks closed once armed. This is good for one time applications. I have used this approach, but if you need to power down, your screwed unless you have the bay designed for slide in slide out switching. If you get creative, you can use the magnets to power up the electronics until launch time, which comes in handy for long preps and limited on board power. http://www.grisk.com/surface_mount/pdf/500%20Series.pdf http://www.grisk.com/surface_mount/100.htm http://www.grisk.com/recessed/mighty_mag.htm http://www.grisk.com/surface_mount/505.htm http://www.grisk.com/surface_mount/pdf/100-110%20series.pdf I just edited the flight I posted before I left the country. Long flights are good for editing video. Anyway, I have posted the final version - http://www.youtube.com/watch?v=6czamPHPjpY. In the video you can see that even when the video camera slipped and broke the antenna, the magnetic switching worked as it did on the RDAS power supply. The bay took some serious vibration. If you check the graph, you can see there was a lot of vibration and still no connection problem from the switch. Channel 5 recorded the x axis. Channel 1 was recorded power. Arnold From: arts-bounces at lokiresearch.com [mailto:arts-bounces at lokiresearch.com] On Behalf Of Jason Andersen Sent: Friday, July 31, 2009 10:12 PM To: arts at lokiresearch.com Subject: Re: [ARTS] FW: ARTS arming position Hi Arnold, What switch do you use? The http://www.grisk.com/recessed/2120-12.htm ? I'm only guessing.... Specifics are always good. J Thanks, Jason <<<<< Always looking for a better switch option.. From: arts-bounces at lokiresearch.com [mailto:arts-bounces at lokiresearch.com] On Behalf Of Arnold Sent: Friday, July 31, 2009 6:28 PM To: arts at lokiresearch.com; 'Arnold' Subject: [ARTS] FW: ARTS arming position The rocket in the video at http://www.youtube.com/watch?v=8n_WIc_EOAw contained two magnetic switches. The RDAS was activated by a magnetic switch as was the video camera. Unfortunately, the antenna was damaged after the video unit slipped in the frame. I was able to find a viewable frame at 16000', but for all purposes the video ends at about 600'. The RDAS transmitted never lost power even though the patch antenna was dislodged at apogee, it still gave me GPS coordinates. In short, the magnetic switch is robust. I always position the switch so open end of the reed is facing up and open when the magnet is removed. I usually buy my switches from GRI - http://www.grisk.com/. From: Tomsrockets at aol.com [mailto:Tomsrockets at aol.com] Sent: Monday, July 27, 2009 12:15 PM To: arnold.roquerre at verizon.net; arts at lokiresearch.com Subject: Re: [ARTS] ARTS arming position Thanks all for your help. The magnetic switch may work for our application. Any particular manufacture or product number of magnetic switch you have used and found to be reliable? Thank you Tom Ciolino In a message dated 7/26/2009 10:16:17 A.M. Central Daylight Time, arnold.roquerre at verizon.net writes: I have found magnetic switches very useful. They have a high gee rating and are very easy to arm. You simply pull off the magnet. I have never had a failure using magnetic switches. The basic reed model with no housing is the most flexible, but the standard model works. One just has to remember to use the normally open terminals since the switch is to remain open while the magnet is present and closed when removed. The only limitation is you can only run 1 amp through them. For higher amperage there are ones available, but they are more expensive. I have found having the reed activate other high gee relays an easy work around. ----- Original Message ----- From: Tomsrockets at aol.com To: arts at lokiresearch.com Sent: Sunday, July 26, 2009 7:45 AM Subject: [ARTS] ARTS arming position I am helping out with a project that involves a tall rocket. Issue is trying to find a way to arm electronics without having a 12 foot ladder on the Black Rock playa. I know the ARTS manual states that the altimeter should only be armed in the upright firing position. How does the ARTS determine its' baseline position upon arming, and how would arming the altimeter in the horizontal position cause problems after launch? What is the minimum G force or acceleration required to put it into flight mode? Thanks Tom Ciolino _____ _____ _______________________________________________ ARTS mailing list ARTS at lokiresearch.com http://mx1.blastzone.com/mailman/listinfo/arts _____ -------------- next part -------------- An HTML attachment was scrubbed... URL: http://mx1.blastzone.com/pipermail/arts/attachments/20090801/576b48ce/attachment-0001.htm