diy high altitude balloon project in australia

M

mark krawczuk

Guest
hi, does anyone know where i can get info on sending up a high altitude
ballon , with camera , gps etc.... in australia ? i need info about the
weight , dimensions etc....
any help be much appreciated.

thanks,
mark krawczuk
 
mark krawczuk wrote:
hi, does anyone know where i can get info on sending up a high
altitude ballon , with camera , gps etc.... in australia ? i need
info about the weight , dimensions etc....
Click to expand...
and legalities...
I'd suggest your local model rocket club/associsation would be a good place
to start.

Dave.

--
================================================
Check out my Electronics Engineering Video Blog & Podcast:
http://www.alternatezone.com/eevblog/
 
"mark krawczuk" <krawczuk@adam.com.au> wrote in message
news:_PSdnajTU_92HNDXnZ2dnUVZ_gydnZ2d@adnap.net.au...
hi, does anyone know where i can get info on sending up a high altitude
ballon , with camera , gps etc.... in australia ? i need info about the
weight , dimensions etc....
any help be much appreciated.

thanks,
mark krawczuk
Click to expand...
Go for a tour of a BOM weather station at an airport or country centre where
they launch weather balloons / sondes. You'll get some good ideas there.
Google Vaisala sondes and see if you can get the specs on weight size etc.
 
hi, hmmm theres no model rocket/club around here for about 300 plus
km`s !!!


mark k



"David L. Jones" <altzone@gmail.com> wrote in message
news:9Vg3m.3361$8P7.1069@newsfe21.iad...
mark krawczuk wrote:
hi, does anyone know where i can get info on sending up a high
altitude ballon , with camera , gps etc.... in australia ? i need
info about the weight , dimensions etc....

and legalities...
I'd suggest your local model rocket club/associsation would be a good
place to start.

Dave.

--
================================================
Check out my Electronics Engineering Video Blog & Podcast:
http://www.alternatezone.com/eevblog/
Click to expand...
 
On Fri, 3 Jul 2009 13:28:33 +0930, "mark krawczuk" <krawczuk@adam.com.au> wrote:

hi, does anyone know where i can get info on sending up a high altitude
ballon , with camera , gps etc.... in australia ? i need info about the
weight , dimensions etc....
any help be much appreciated.

thanks,
mark krawczuk
Click to expand...
High altitude glider project
http://members.shaw.ca/sonde/index.htm

dmm
 
Hi,
here are some basic equations to help.

density of air (nitrogen) = 1.18221 kg/m^3
density of helium = 0.178 kg/m^3
balloon lifting capacity = 4/3 * pi * r^3*(density air - density
helium)-mass of balloon. where r is the ballon diameter

Also PV=nRT , so as the balloon rises it's diameter will increase, so don't
fully fill a balloon.

As the balloon rises the air density decreases, so if there isn't enough
initial lift in the ballon it will reach an equilibrium height rather than
the balloon limit.

Hope that's a start, recommend a trip to the library for a physics book or
two

have a look here too
http://moo.pl/~tygrys/balloon/
http://www.natrium42.com/halo/flight2/
and many others

Good luck

Greg


"mark krawczuk" <krawczuk@adam.com.au> wrote in message
news:_PSdnajTU_92HNDXnZ2dnUVZ_gydnZ2d@adnap.net.au...
hi, does anyone know where i can get info on sending up a high altitude
ballon , with camera , gps etc.... in australia ? i need info about the
weight , dimensions etc....
any help be much appreciated.

thanks,
mark krawczuk
Click to expand...
 
On Fri, 03 Jul 2009 13:28:33 +0930, mark krawczuk wrote:

hi, does anyone know where i can get info on sending up a high
altitude ballon , with camera , gps etc.... in australia ?
Click to expand...
Troll the web. I remember there is at least one page out there. Not very
common in Australia, partly as we have highly controlled airspace.

i need info
about the weight , dimensions etc....
Click to expand...
Caveat; at high altitude, your lifting gas expands greatly, which is why
the high altitude weather kit is like it is.

any help be much appreciated.
Click to expand...
Well,
i know someone locally is still at the orange garbage bag hot air ballon
stage of developing their own high altitude(?) balloon. They have found
that night times are the best time for maximum height(and best local
newspaer coverage of "Flying Saucer Scare" {:).
thanks,
mark krawczuk
Click to expand...




--
Great advances in Debian Linux; post a bug report and get spam in three
days.







--
Great advances in Debian Linux; post a bug report and get spam in three
days.
 
Hi again,
of course you want the ballon to burst at some point so it returns to earth.
It's a matter of knowing the burst diameter of the balloon and then working
out at what height that will occur.

Density of air as a function of height can be calculated, have a look here

http://www.engineeringtoolbox.com/air-altitude-pressure-d_462.html and
http://wahiduddin.net/calc/density_altitude.htm and
http://mintaka.sdsu.edu/GF/explain/thermal/hydrostatic.html and
http://www.chem.hawaii.edu/uham/lift.html and
http://www.solartran.com.au/balloon_engine.htm what a wierd idea that one


Cheers
Greg

"gcd" <gcdmelbnospam@deletemelbnospam.iimetro.com.au> wrote in message
news:4a4e197f$1@dnews.tpgi.com.au...
Hi,
here are some basic equations to help.

density of air (nitrogen) = 1.18221 kg/m^3
density of helium = 0.178 kg/m^3
balloon lifting capacity = 4/3 * pi * r^3*(density air - density
helium)-mass of balloon. where r is the ballon diameter

Also PV=nRT , so as the balloon rises it's diameter will increase, so
don't fully fill a balloon.

As the balloon rises the air density decreases, so if there isn't enough
initial lift in the ballon it will reach an equilibrium height rather than
the balloon limit.

Hope that's a start, recommend a trip to the library for a physics book or
two

have a look here too
http://moo.pl/~tygrys/balloon/
http://www.natrium42.com/halo/flight2/
and many others

Good luck
Click to expand...
 
terryc wrote:
On Fri, 03 Jul 2009 13:28:33 +0930, mark krawczuk wrote:

hi, does anyone know where i can get info on sending up a high
altitude ballon , with camera , gps etc.... in australia ?

Troll the web. I remember there is at least one page out there. Not very
common in Australia, partly as we have highly controlled airspace.

i need info
about the weight , dimensions etc....

Caveat; at high altitude, your lifting gas expands greatly, which is why
the high altitude weather kit is like it is.

any help be much appreciated.

Well,
i know someone locally is still at the orange garbage bag hot air ballon
stage of developing their own high altitude(?) balloon. They have found
that night times are the best time for maximum height(and best local
newspaer coverage of "Flying Saucer Scare" {:).
thanks,
mark krawczuk
Click to expand...
When I was 15 I sent up a hot air balloon that was reported in the local
paper as a UFO. I used one of those bags the dry cleaners put over your
clothes when they've been cleaned.
 
On Sat, 04 Jul 2009 11:37:52 +1000, gcd wrote:

Hi again,
of course you want the ballon to burst at some point so it returns to
earth. It's a matter of knowing the burst diameter of the balloon and
then working out at what height that will occur.
Click to expand...
Oh no,no,no, You want something a bit better controlled then that. you
really need gas release at a certain height, with auto parachute
deployment, plus emergency release, such as you suddenly discover that
your previous payload is making for Antartica.


--
Great advances in Debian Linux; post a bug report and get spam in three
days.
 
On Sat, 04 Jul 2009 09:50:55 +0800, Davo wrote:


When I was 15 I sent up a hot air balloon that was reported in the local
paper as a UFO. I used one of those bags the dry cleaners put over your
clothes when they've been cleaned.
Click to expand...
It is/was a common brussel sprout activity at one stage. The local person
is obviously using orange garbage bags.


These are very easy to make, You just make a loop of light wire to hold
the bag open and tape bag mouth around it. Support cotton wool ball in
middle on two thin wire cross arms. Preheat air with metho stove or
similar(do this for longer flight), then when it is lifting, light metho
soaked cotton wool ball and let it lift off.

Works great with no crosswinds and on coldish nights.






--
Great advances in Debian Linux; post a bug report and get spam in three
days.







--
Great advances in Debian Linux; post a bug report and get spam in three
days.
 
terryc wrote:
On Sat, 04 Jul 2009 09:50:55 +0800, Davo wrote:


When I was 15 I sent up a hot air balloon that was reported in the local
paper as a UFO. I used one of those bags the dry cleaners put over your
clothes when they've been cleaned.

It is/was a common brussel sprout activity at one stage. The local person
is obviously using orange garbage bags.


These are very easy to make, You just make a loop of light wire to hold
the bag open and tape bag mouth around it. Support cotton wool ball in
middle on two thin wire cross arms. Preheat air with metho stove or
similar(do this for longer flight), then when it is lifting, light metho
soaked cotton wool ball and let it lift off.

Works great with no crosswinds and on coldish nights.


Bingo!
Click to expand...
 
On Fri, 3 Jul 2009 22:25:33 +0930, "mark krawczuk"
<krawczuk@adam.com.au> said:
hi, hmmm theres no model rocket/club around here for about
300 plus
Click to expand...

Hi Mark,
Where do you live? I've an interest in doing the same. Sydney's not a
great place from a free air-space perspective though :)

Terry
 
hi, i live in renmark , south australia , " perfect weather one day ,
beautiful the next ....."

mark k


"Terry Dawson" <vk2ktj@gmail.com-fu> wrote in message
news:almarsoft.3307697631518275569@news.eternal-september.org...
On Fri, 3 Jul 2009 22:25:33 +0930, "mark krawczuk"
krawczuk@adam.com.au> said:
hi, hmmm theres no model rocket/club around here for about
300 plus

Hi Mark,
Where do you live? I've an interest in doing the same. Sydney's not a
great place from a free air-space perspective though :)

Terry
Click to expand...
 
You must log in or register to reply here.

Welcome to EDABoard.com

Sponsor

Back
Top