From Brian_Whorley at comcast.net Sun Jan 10 11:46:11 2010 From: Brian_Whorley at comcast.net (Brian Whorley) Date: Sun, 10 Jan 2010 12:46:11 -0700 Subject: [ARTS] GPS telemetry Data - ARTS mode vs GPS mode Message-ID: I am working on my level 3 project. I am putting together a 98MM Mongoose. In the nose cone I am putting the Arts Telemetry, and currently debating if I should also put the ARTS2 altimeter in the nose cone. I do not want to put a vent hole in the nose cone or it's shoulder due to it's effects on CD. It will not be triggering any pyro charges. The altimeters in the electronics payload will handle that. Is there an advantage to using the ARTS mode over the GPS mode, I assume it will record the data on the ARTS Altimeter in the ARTS mode. But with out a vent hole the Baro Data will be inaccurate. I will have 2 altimeters in addition in the electronics payload which can record. What data and from where does that data come from ( GPS or Altimeter ) ? and do they occur in both modes ( GPS & ARTS ) ? Originates from In GPS mode In ARTS mode 1) Launch ? ? ? 2) Burn out ? ? ? 3) Coast ? ? ? 4) Apogee ? ? ? 5) Drogue ? ? ? 6) Main ? ? ? 7) Altimeter reading ? ? ? 8) Acceleration ? ? ? 9) Descent ? ? ? Thanks -------------- next part -------------- An HTML attachment was scrubbed... URL: From jetgen at sbcglobal.net Sun Jan 10 13:09:20 2010 From: jetgen at sbcglobal.net (Jenni and John Etgen) Date: Sun, 10 Jan 2010 15:09:20 -0600 Subject: [ARTS] GPS telemetry Data - ARTS mode vs GPS mode In-Reply-To: References: Message-ID: <4B4A4200.40009@sbcglobal.net> Brian: In GPS mode you get the NMEA datastream. You can not use RadioRX with that. You will need to use someother program to display. All the information that you are listing below ( 1 - 9 ) comes in the ARTS mode from the ARTS. In GPS Mode you will get the Altitude from GPS, The only advantage to me of ARTS ( ARTS1 or ARTS2 ) mode over GPS mode is that you will receive altitude data as long as you have radio contact even if the GPS is not aquiring it's lock. In the ARTS mode, you only receive the long and lat data from the GPS stream no other information that is there. . The Altitude that is reported is the ART's Altitude. Also in the ARTS mode it will transmit the GPS coordinates the end of it's recording time. So if you are tracking the recovery ( like I normally do ) you will not know if it has been found and is on it's way back. If you are going to fly in the ART's mode you really need to a vent hole in, otherwise all the data that you are besides long and lat will be bogus as all those are dependent on the altitude. Jenni Etgen Brian Whorley wrote: > I am working on my level 3 project. I am putting together a 98MM Mongoose. > > In the nose cone I am putting the Arts Telemetry, and currently > debating if I should also put the ARTS2 altimeter in the nose cone. > > I do not want to put a vent hole in the nose cone or it's shoulder due > to it's effects on CD. It will not be triggering any pyro charges. The > altimeters in the electronics payload will handle that. > > Is there an advantage to using the ARTS mode over the GPS mode, I > assume it will record the data on the ARTS Altimeter in the ARTS mode. > But with out a vent hole the Baro Data will be inaccurate. I will have > 2 altimeters in addition in the electronics payload which can record. > > What data and from where does that data come from ( GPS or Altimeter ) > ? and do they occur in both modes ( GPS & ARTS ) ? > > Originates from In GPS > mode In ARTS mode > 1) Launch ? > ? ? > > 2) Burn out ? > ? ? > > 3) Coast ? > ? ? > > 4) Apogee ? > ? ? > > 5) Drogue ? > ? ? > > 6) Main ? > ? ? > > 7) Altimeter reading > ? ? ? > > 8) Acceleration > ? ? ? > > 9) Descent > ? ? ? > > Thanks > > > ------------------------------------------------------------------------ > > _______________________________________________ > ARTS mailing list > ARTS at lokiresearch.com > http://mx1.blastzone.com/mailman/listinfo/arts From jeff at lokiresearch.com Sun Jan 10 22:04:11 2010 From: jeff at lokiresearch.com (Jeff Taylor) Date: Mon, 11 Jan 2010 01:04:11 -0500 Subject: [ARTS] GPS telemetry Data - ARTS mode vs GPS mode In-Reply-To: <4B4A4200.40009@sbcglobal.net> References: <4B4A4200.40009@sbcglobal.net> Message-ID: <4B4ABF5B.2050000@lokiresearch.com> Jenni and John Etgen wrote: > > If you are going to fly in the ART's mode you really need to a vent > hole in, otherwise all the data that you are besides long and > lat will be bogus as all those are dependent on the altitude. While I certainly recommend a vent hole when using an ARTS for deployment, I think you will find that it works just fine without one. It is probably possible to seal a nose cone or payload bay tightly enough to give the ARTS bad barometric readings, but it isn't easy. I fly one in the fiberglass nosecone of my Scorpion rocket and the data looks the same as from the other ARTS in the vented altimeter bay. The nosecone is fiberglass that is closed by a fiberglass bulkplate. Somehow, enough air manages to leak around the bulkplate to make the ARTS work (no o-ring seal or anything, but a tight fit). Your first test flight will show how well this works (or doesn't work). -J -- Jeffrey S. Taylor, Ph.D. President Loki Research, LLC Arsenal Business Center 5301 Tacony Street, Box 210 Philadelphia, PA 19137 Office: (215) 288-0500 Cell: (203) 500-2678 From ehall at ozarkaerospace.com Tue Jan 12 15:00:48 2010 From: ehall at ozarkaerospace.com (Erik Hall) Date: Tue, 12 Jan 2010 18:00:48 -0500 Subject: [ARTS] GPS telemetry Data - ARTS mode vs GPS mode In-Reply-To: References: Message-ID: <342C119FFA024C39AB220B7B0F511C58@OzarkX4> Brian, In GPS mode: You get the data stream directly from the GPS. Position, velocity, satellite info, etc. In ARTS mode: You get Latitude and Longitude from the GPS. From the ARTS you get barometric altitude, the status of the pyros and a verification of the flight profile, and an indication of the flight state (on the pad, thrusting, coasting up, coasting down, landed). Basically, if you want flight status, use the ARTS and put in a vent hole. If you just want tracking GPS position, then do not use the ARTS. In either case, after the flight you can look at the flight data saved in the ARTS. I hope this helps, please let us know if you have further questions! Thanks, Erik _____ From: arts-bounces at lokiresearch.com [mailto:arts-bounces at lokiresearch.com] On Behalf Of Brian Whorley Sent: Sunday, January 10, 2010 2:46 PM To: arts at lokiresearch.com Cc: MIke Whorley Subject: [ARTS] GPS telemetry Data - ARTS mode vs GPS mode I am working on my level 3 project. I am putting together a 98MM Mongoose. In the nose cone I am putting the Arts Telemetry, and currently debating if I should also put the ARTS2 altimeter in the nose cone. I do not want to put a vent hole in the nose cone or it's shoulder due to it's effects on CD. It will not be triggering any pyro charges. The altimeters in the electronics payload will handle that. Is there an advantage to using the ARTS mode over the GPS mode, I assume it will record the data on the ARTS Altimeter in the ARTS mode. But with out a vent hole the Baro Data will be inaccurate. I will have 2 altimeters in addition in the electronics payload which can record. What data and from where does that data come from ( GPS or Altimeter ) ? and do they occur in both modes ( GPS & ARTS ) ? Originates from In GPS mode In ARTS mode 1) Launch ? ? ? 2) Burn out ? ? ? 3) Coast ? ? ? 4) Apogee ? ? ? 5) Drogue ? ? ? 6) Main ? ? ? 7) Altimeter reading ? ? ? 8) Acceleration ? ? ? 9) Descent ? ? ? Thanks -------------- next part -------------- An HTML attachment was scrubbed... URL: From iain.banks at fiserv.com Thu Jan 14 23:28:55 2010 From: iain.banks at fiserv.com (Banks, Iain) Date: Fri, 15 Jan 2010 01:28:55 -0600 Subject: [ARTS] Paging Erik Hall Message-ID: <21EC214B18334243A30E07A0F823AE520BFC00A3@MKEXCHVS2.Mail.Fiserv.net> Hi Erik, Can you contact me on iain_banks at blueyonder.co.uk regarding the status of repair of the two ARTS I sent back to you, I have a feeling my work email server blocks your emails. Many Thanks Iain Banks -------------- next part -------------- An HTML attachment was scrubbed... URL: