[tccrockets] Re: Nike Smoke

  • From: James Dougherty <jafrado@xxxxxxxxx>
  • To: "tccrockets@xxxxxxxxxxxxx" <tccrockets@xxxxxxxxxxxxx>
  • Date: Thu, 28 May 2015 07:04:00 -0700

Very well - remember that this is the same concept of a fog machine

The smoke candles, grenades we did MANY times in the past. It does work - i
even have a key manufacturer for flame less or cold smoke and we modified for
ematches - probably still have half a dozen...
But - these make a mess out of your rocket and recovery gear, sometimes they
will explode (G-forces), tangle up your recovery gear, and most importantly you
have no direct control (they keep burning)

But yeah, a g-switch timer set to burn out sense works fine
If you look in the newsletters you may find some pictures

Btw, I was using 10000 cubic feet white and colored (dye)

I've since decided fogger is the way to go

Sent from my iPhone

On May 27, 2015, at 11:47 PM, Berry Van Oostende <bv3017@xxxxxxxxx> wrote:

But how long does the glycerin fog last, or is there an alternative that we
could use to produce smoke. There are smoke candles that are used to detect
leaks in hvac systems. These candles burn for a set amount of time and then
go out. The 30 second candle produces 4000 cubic feet of smoke

On May 27, 2015 11:18 PM, "James Dougherty" <jafrado@xxxxxxxxx> wrote:
You'll have to do the redox equations to figure out what volume to burn for
a given temperature.
My plan was to use a high pressure pump and a burn chamber made out of those
heating elements.
I planned on using a 1lb 4A SLA 12v battery which could double as ballast
anyhow and just let us fly
a larger motor.

Probably the most massive amount of smoke can be made by using a fogger
nozzle like the below:
http://www.planetnatural.com/product/fogg-it-nozzle/

And simply inject it in the burn chamber.
You'll run an inlet vent on your nosecone right through the burn chamber.
A new "modern" smoke with no nasty chemicals.

But, I wonder how much of that stuff you can atomize.

The tracking smoke I used before I once got it to smoke on the way up, but
we need to do this
to at least 10K' AGL to even see anything worth while.

And we'll want to shut it off on descent to prevent fouling up the recovery
gear.


On Wed, May 27, 2015 at 10:40 AM, Berry Van Oostende <bv3017@xxxxxxxxx>
wrote:
Cool, thanks.


On May 27, 2015 10:25 AM, "James Dougherty" <jafrado@xxxxxxxxx> wrote:

Here's some stuff to look at:

Hi Temp Heating Element
http://www.ebay.com/itm/PTC-heating-element-250-10W-12V-consistant-temperature-ceramic-Thermostatic-/151681455742?pt=LH_DefaultDomain_0&hash=item2350eb567e

Fog Juice
http://www.instructables.com/id/Make-your-own-smoke-fluid/
http://lifehacker.com/5854472/make-a-fog-machine-for-your-party-for-5

High Pressure Pump
http://www.ebay.com/itm/Mini-DC-12V-6L-min-6A-80W-Micro-Diaphragm-High-Pressure-Water-Pump-Reflux-Valve-/251969749200?pt=LH_DefaultDomain_0&hash=item3aaa9140d0

Make a prototype and we can figure out how to control it with a processor.


On Wed, May 27, 2015 at 10:16 AM, Berry Van Oostende <bv3017@xxxxxxxxx>
wrote:

Oh I understand, if you want help with that, I'd be interested to do
what I can.


On May 27, 2015 10:14 AM, "James Dougherty" <jafrado@xxxxxxxxx> wrote:

Yes, I do have designs for something like this with a pump and
glycerine smoke generator.
But alas, something for next year ... too many projects this year ;-)



On Wed, May 27, 2015 at 10:02 AM, Berry Van Oostende
<bv3017@xxxxxxxxx> wrote:

Thanks, James. That was very interesting and informative. I wonder if
we can duplicate the tracking smoke on a smaller scale. Could be
interesting.

On May 26, 2015 10:27 PM, <srkendal@xxxxxxxxxxx> wrote:

That was cool, thanks!

-Steve


Sent from XFINITY Connect Mobile App


-----Original Message-----

From: jafrado@xxxxxxxxx
To: tccrockets@xxxxxxxxxxxxx
Cc:
Sent: 2015-05-26 22:12:14 GMT
Subject: [tccrockets] Nike Smoke

Found this tonight ....
https://www.youtube.com/watch?v=_UwDvZ0QZs0

Looking forward to next launch!






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