About that science stuff (4 May, 2018)

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About that science stuff (4 May, 2018)

Postby aardvark_admin » Fri May 04, 2018 9:22 am

This column is archived at: https://aardvark.co.nz/daily/2018/0504.shtml

The hydrogen-lift free-balloon aerial video project is coming along nicely -- albeit not without some failures along the way.

Hopefully next week will see the launch of the final design and some lovely video footage of the town or countryside over which it passes.

I deliberately decided to make this a series which documents the failures as well as the successes involved in developing a simple project like this and that appears to have paid off.

Let's hope it creates a passion for science and learning within at least a few young minds.

Do readers have suggestions for new projects that can be presented in a similar way to eager young (and old) minds?
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Re: About that science stuff (4 May, 2018)

Postby Stevesub » Fri May 04, 2018 10:30 am

Your next problem with the council will be littering - your dead balloons that have escaped and you have lost!!!!!!
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Re: About that science stuff (4 May, 2018)

Postby GSVNoFixedAbode » Fri May 04, 2018 10:43 am

Absolutely loving the Breaking Balloon series Bruce - keep them coming!

I'll be interested to see what plans you have for payload recovery - location, identification, etc: not just of the kit but of the images as well. I can see a perfect snap of a close-up of a pilot's face :lol:
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Re: About that science stuff (4 May, 2018)

Postby latewings » Fri May 04, 2018 11:07 am

I'll be interested to see what plans you have for payload recover


A long thin strip of Aluminium foil suspended underneath the balloon will allow Bruce to get it's location from Primary Radar services. Should be simple to track. :twisted:
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Re: About that science stuff (4 May, 2018)

Postby Hiro Protagonist » Fri May 04, 2018 11:09 am

You don't say what current you need at 12V, but a tripler is open-loop, why not use something like these?

https://www.banggood.com/DC-3_3V-3_7V-5 ... 09416.html
https://www.banggood.com/4A-XL6009E1-Ad ... 75699.html
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Re: About that science stuff (4 May, 2018)

Postby aardvark_admin » Fri May 04, 2018 11:28 am

Hiro Protagonist wrote:You don't say what current you need at 12V, but a tripler is open-loop, why not use something like these?

https://www.banggood.com/DC-3_3V-3_7V-5 ... 09416.html
https://www.banggood.com/4A-XL6009E1-Ad ... 75699.html


Because then I'll miss the opportunity to teach a little electronics theory.

It's like people asking "WHy don't you just get a cylinder of helium instead of making hydrogen?"

Answer: because it's more fun to make stuff than to just buy stuff and you learn a whole lot more in the process :-)
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Re: About that science stuff (4 May, 2018)

Postby Kiwiiano » Fri May 04, 2018 12:48 pm

And because hydrogen has more lift than helium plus is a lot cheaper.
If the Henry Cruns are going to ban H2 balloons on privacy concerns they also have to ban broom handles & gaffer tape, two story houses, ladders, telescopes, telephoto lenses, brace & bits, etc etc.
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Re: About that science stuff (4 May, 2018)

Postby mad » Fri May 04, 2018 1:46 pm

Kiwiiano wrote:And because hydrogen has more lift than helium plus is a lot cheaper.


It also gives you more options, such as adding a small piezo to the rig as a potential on board self destruct :)
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Re: About that science stuff (4 May, 2018)

Postby GSVNoFixedAbode » Fri May 04, 2018 3:01 pm

Kiwiiano wrote:...If the Henry Cruns are going to ban H2 balloons on privacy concerns they also have to ban broom handles & gaffer tape, two story houses, ladders, telescopes, telephoto lenses, brace & bits, etc etc.

Are you implying Bruce is more of a Neddy Seagoon?
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Re: About that science stuff (4 May, 2018)

Postby aardvark_admin » Fri May 04, 2018 5:32 pm

GSVNoFixedAbode wrote:
Kiwiiano wrote:...If the Henry Cruns are going to ban H2 balloons on privacy concerns they also have to ban broom handles & gaffer tape, two story houses, ladders, telescopes, telephoto lenses, brace & bits, etc etc.

Are you implying Bruce is more of a Neddy Seagoon?

I resemble that remark!

<splash!>

He's fallen in the water!
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