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telemetry

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rickpegser(at)yahoo.com
Guest

Posted: Sat Jun 06, 2009 8:36 pm Post subject: telemetry

we have been playing with telemtry for our rockets. using gps modules to track them and an interface to the altimeters. the equipment has come to the cost point that that you can build a remote telemetry module for less then 500$ with a 7 mile range. durring test flight this might be a good idea, forget watching the panel the ground crew is doing it for you. just a thought. if anybody wants to know how to do it give me an email off list at rickpegser(at)yahoo."you know what"



rick



--- On Sat, 6/6/09, Kevin Horton <khorton01(at)rogers.com> wrote:



 	  Quote: 	
		   From: Kevin Horton <khorton01(at)rogers.com>

 Subject: Re: ROD END BEARING JAM NUT - Torque

 To: rv-list(at)matronics.com

 Date: Saturday, June 6, 2009, 10:30 AM

 

 Kevin Horton <khorton01(at)rogers.com>

 

 If you could get a torque wrench on it, you would want to

 use a torque value for a shear nut.  E.g., if it was

 10-24, you would want 12-15 in-lb, according to the torque

 table in AC43.13-1B.

 

 Kevin Horton

 

 On 6-Jun-09, at 09:25 , Michael Kraus wrote:

 

 > Why would you not use the standard torque specified

 for a bolt/nut of the size being

 torqued??   Like if it is 10-24 then it would

 be 20-25 in lbs.... Etc

 > 

 > Sent from my iPhone

 > 

 > On Jun 6, 2009, at 8:40 AM, Kelly McMullen <kellym(at)aviating.com>

 wrote:

 > 

 >> Yes. If that is sufficiently tight for your

 calibrated wrist and ability to hold wrench on nut, it isn't

 going anywhere.

 >> 

 >> Garey Wittich wrote:

 >>> 

 >>> 

 >>> .  Is this 1/8 turn adequate for the Jam

 Nut tightness, if NOT how do you turn the Nut (since it is

 recessed) ????

 >>> 

 >>> W

 >> <mime-attachment.jpeg>

 > 

 

 

 --

 Kevin Horton

 Ottawa, Canada

 

 

 

 

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sbuc(at)hiwaay.net
Guest

Posted: Sun Jun 07, 2009 5:55 am Post subject: telemetry

RICHARD MILLER wrote:

 	  Quote: 	
		   

 

 

 we have been playing with telemtry for our rockets. using gps modules

 to track them and an interface to the altimeters. the equipment has

 come to the cost point that that you can build a remote telemetry

 module for less then 500$ with a 7 mile range. durring test flight

 this might be a good idea, forget watching the panel the ground crew

 is doing it for you. just a thought. if anybody wants to know how to

 do it give me an email off list at rickpegser(at)yahoo."you know what"

 


	


The infrastructure is already in place for *worldwide* monitoring of 

flight data. Many of us have adopted the APRS protocol for tracking our 

aircraft:



http://www.vansairforce.com/community/forumdisplay.php?f=104



http://www.vansairforce.com/community/showthread.php?t 7773



http://aprs.fi/?call=N399SB&mt=m&z=10&timerange=3600



This is a service in the ham radio two-meter band that already provides 

GPS location, heading, speed, and altitude. The data is displayed on 

internet servers that provide real-time monitoring anywhere at no cost.



There are some new APRS trackers coming soon that will allow much more 

data to be transmitted. It will be up to someone to engineer the 

interface between the aircraft parameters and the tracker, but with 

engine monitors spitting out a serial stream, this shouldn't be 

unsurmountable.



Sam Buchanan

- The Matronics RV-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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rickpegser(at)yahoo.com
Guest

Posted: Sun Jun 07, 2009 5:20 pm Post subject: telemetry

SAM

 we have this for the rockets too. the reason most of us don't use it, is the test requirements and the cost. for the rockets we use two xbee pro xsc radio modems. one mounted to a ttl serial board this one talks to the on board pic which does three axis g, baro altimeter , fire the ejection charges, and passes the gps info the modem. cost to build    200.00$

base unit xbee pro xsc mounted in a usb board attached to the laptops. cost to build 100.00$ 

add on cost for aircraft telemtry. about three hundred for the extra sensors and pic capable of handling them. figure three axis gyro and accelerometer, static and pitot pressure, oil pressure and temp, cht and egt

our concern with the rockets is where the hell did they go. when you slap a 20 lb rocket in ths butt with 500lbs. of thrust, it has a tendancy to go out of sight. even if you can see it it will be a long walk and at three or more miles away they can be hard to find.

rick

--- On Sun, 6/7/09, Sam Buchanan <sbuc(at)hiwaay.net> wrote:

 	  Quote: 	
		   From: Sam Buchanan <sbuc(at)hiwaay.net>

 Subject: Re: telemetry

 To: rv-list(at)matronics.com

 Date: Sunday, June 7, 2009, 6:44 AM

 Buchanan <sbuc(at)hiwaay.net>

 RICHARD MILLER wrote:

 > 

 <rickpegser(at)yahoo.com>

 > 

 > 

 > we have been playing with telemtry for our rockets.

 using gps modules

 > to track them and an interface to the altimeters. the

 equipment has

 > come to the cost point that that you can build a

 remote telemetry

 > module for less then 500$ with a 7 mile range. durring

 test flight

 > this might be a good idea, forget watching the panel

 the ground crew

 > is doing it for you. just a thought. if anybody wants

 to know how to

 > do it give me an email off list at

 rickpegser(at)yahoo."you know what"

 > 

 The infrastructure is already in place for *worldwide*

 monitoring of flight data. Many of us have adopted the APRS

 protocol for tracking our aircraft:

 http://www.vansairforce.com/community/forumdisplay.php?f=104

 http://www.vansairforce.com/community/showthread.php?t 7773

 http://aprs.fi/?call=N399SB&mt=m&z=10&timerange=3600

 This is a service in the ham radio two-meter band that

 already provides GPS location, heading, speed, and altitude.

 The data is displayed on internet servers that provide

 real-time monitoring anywhere at no cost.

 There are some new APRS trackers coming soon that will

 allow much more data to be transmitted. It will be up to

 someone to engineer the interface between the aircraft

 parameters and the tracker, but with engine monitors

 spitting out a serial stream, this shouldn't be

 unsurmountable.

 Sam Buchanan

 Forum -

 FAQ,

    - MATRONICS WEB FORUMS -

 List Contribution Web Site -

               -Matt

 Dralle, List Admin.

- The Matronics RV-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV-List

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