Comments for B E S P I N

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Comment on Success! by bespin

bespin — Tue, 14 Feb 2012 16:34:54 +0000

Hey Dean, While we don't have the video to prove it from either of the launches we did with the inertia rods, we DID have a rotation detection device inside the final payload of the season. A friend of ours is working on a gyro motor for balloons and wanted to get rotational info from our launch. Once we get up above the jet stream winds, or rate of spin slowed considerably and became a very constant, slow directional spin, which is what we were hoping for. There is no way to eliminate the spin, so you just have to hope to reduce it or control it as much as possible. Along with the inertia rods, I'd highly recommend getting some ball bearing swivels to put at the top of the payload and base of the parachute. Anything to reduce the spin created by the turning of the balloon/twisting of the rope will make the inertia rods all the more effective. http://www.apogeerockets.com/swivels.asp Best of luck!

Comment on Success! by Dean Fournier

Dean Fournier — Sun, 12 Feb 2012 06:18:00 +0000

Hello from Ottawa, Canada!

I’m about to do my first launch in a few months, and I was wondering how the inertia rods worked for stopping the spinning. Thanks for any info,and I hope I do as well as you guys did!

Dean

Comment on A New Beginning by bespin

bespin — Mon, 16 Jan 2012 03:53:33 +0000

The trick for helium is to weight your payload, then fill a water jug to approximately 2 lbs more than what your payload weighs. Then connect the jug to a string and I hang it off the end of the hose you use to fill the balloon. Once your balloon is lifting the jug off the ground, you know you have enough helium.

Hope that helps.

Comment on A Look Inside by bespin

bespin — Mon, 16 Jan 2012 03:51:40 +0000

To use the big red bee you’ll need a HAM radio license. It uses APRS radio frequency to report position and altitude to the Internet. I also use a SPOT tracker, as the big red bee will not accurately report on the ground when it loses line of sight radio connectivity with other radio towers, so the SPOT works great for precise ground location.

Comment on A Look Inside by Ignacio

Ignacio — Wed, 11 Jan 2012 01:16:07 +0000

Hi,

Did you use only the Big Red Bee BLGPS 2M HP to track the payload ? Does the Big Red cell phone signal or only with gps signal is enough ?

Regards
Ignacio

Comment on A New Beginning by Ignacio

Ignacio — Wed, 11 Jan 2012 01:09:43 +0000

Hi,

How much helium did you use for the balloon?
I from Argentina and we want to launch a ballon and take picture here.
I will buy weather balloon from amazon (600gr) but we don’t know how much helium we need to inflate it.

Regards
Ignacio

Comment on A Look Inside by bespin

bespin — Tue, 10 Jan 2012 19:05:55 +0000

Yes, you can get Telemetry & positioning with the Telemetrum, however it requires you having a direct line of sight connection with an antenna on the ground, connected to a computer running the AltOS software. Its all very easy to use, the only problem we had was we lost line of sight fairly early in our flight and had foolishly not used enough battery power to get enough wattage to reach us on the ground. We had MUCH better luck with our Big Red Bee tracker. http://www.bigredbee.com/blgps_2mhp.htm

Hope that helps.

Comment on A Look Inside by Phil Marcoux

Phil Marcoux — Wed, 04 Jan 2012 02:03:23 +0000

Hi,
can you really get telemetry and gps positioning with the telemetrum?

I though the max high was 40k feet???

Please let me know i have just ordered a telemetrum.

thxs,

Phil

Comment on Success! by bespin

bespin — Thu, 27 Oct 2011 18:01:37 +0000

Hey Niran,
The max altitude for our project this year was 121,500 ft up. That’s about 23.01 miles above the earth’s surface. As for Helium, we get a T size tank and have a weight hanging from the nozzle that connects to the balloon, once that weight is lifted off the ground by the balloon, we know we have enough helium and we can tie off the balloon. The electronics fair quite well in the cold temperatures. The batteries will die faster during extreme cold, but that’s why we try to keep the payload as air tight as possible and insulated with a styrofoam. The heat generated from the electronics themselves is usually enough to mitigate any real serious loss of battery life.

Hope that helps.

Comment on Success! by Niran

Niran — Thu, 27 Oct 2011 17:55:39 +0000

Hi every one
It’s a great work. I like the landing. Can you give us an idea of max altitude you achieve what is the weight of the payload and how much gas you put in to the bag/balloon. Also how fair your electronics behave at that temperature. Sorry for all the questions just curious.
Thanks
Niran