First homemade rocket´s!

[Pyrostar]

Hi all!


It have made my first homemade rocket´s.
I used 15g of Mortar and Pestle blackpowder for the propellant.
The tube was a homemade craftpaper tube with 3mm thick walls.
The tube has the following measurement´s:
1/2 ID, 7cm in length.
Noozle ID was 3mm and the core was 10mm deep.
Balance test was perfect, too.
Here are the video´s:( sorry for daytime recording )

http://youtube.com/watch?v=dg7GoDEPwBY

http://www.youtube.com/watch?v=6WA19-jovJs

Other rockets will follow.


Pyrostar

[Tyneman]

Verry nice for greenpowder!
They go verry straight up, cool. Keep up the good work my man!

Gr33tZ

[Pyrostar]

Hi

Thank´s Tyneman.

I´ll record some rocket´s at nighttime with some tigertail stars.
They are so small but very powerfull .

And I didn´t use a ball mill, hurrey!

Rocket´s are my favourite firework now.
And I have got enough blackpowder to make a lot of rocket´s.

Pyrostar

[yellowcard]

Nice work ! They go up pretty fast for green powder ! I bet it's the good charcoal whitch did the work .
Try to put one with the nozzle up on a non-digital scale, so you can see how much power they have.
Or if you're really sure about yourself and your motors, try a payload !

Good luck.

Yellowcard

edit: power not powder !

[mr.stijntje]

Flying High! Good rockets!

Try to put one with the nozzle up on a non-digital scale, so you can see how much powder they have.

Hehe, you mean how much Power they have. The amount of Powder is known lol. :)

[Pyrostar]

Hi all


I started to make bigger rockets, now I have made a rocket with 15mm ID tube and 10cm in length.
The propellant is mortar and pestle BP again.

I am a bit afraid that they will CATO, don´t know why:)

I am thinking of a payload( salute)

What can I use instead of KCLO4 or Kmno4 as a strong flashpowder oxidizier?
Something with BaNO3 or anything else?
I have heard that it is used as a substitute for KCLO4

I have acces to aluminiumpowder or magnesiumpowder

Pyrostar

[mr.stijntje]

You want to add a payload to a rocket you haven't even tested? Just fire it first, if it works, make an other, exactly the same. Then you can add a payload.

Ba(NO3)2 works well in flash, but even KNO3/Mg works really fine! Make your KNO3 as fine as possible and sieve the Mg through. It gives very bright flash, incredibly cool for aerial salutes.

[Pyrostar]

Hi all

What about using another charcoal such as pine?
Are different ratio´s needed?

I am tired of using willow, because it doesn´t leave a big tail, and that is what I am looking for,
a thick sparkling tail.
Is pine a good charcoal for this?
And does it matter at which temperature I cooked the charcoal?


Thanks,


Pyrostar

[Pjee]

I am tired of using willow, because it doesn´t leave a big tail

Willow charcoal is just fine for creating a big tail, maybe you should just try to slightly change your composition to Tiger tail for example. (44 - 44- 6)

P.S: Willow charcoal creates way better propellant then pine..

@Stijntje: Got me there, but it's also nice if your rocket actually flies. :)

[mr.stijntje]

P.S: Willow charcoal creates way better propellant then pine..

While pine works better in streamers.. :)

[Pyrostar]

Oh god,

I ran out of willow and now I have 200g of pine charcoal, because I was thinking it will make a
good propellant


Anyway, I will charring some willow on the weekend then, and there is enough time and money to make enough rocket´s, cause I have 6 week´s holidays now

I notice that some pieces of my charcoal are very soft, and other chunks are very hard( very difficult to grind them in a non-electric-coffeegrinder).
What is wrong here?
Is it the charring temperature?

What is the best charring temperature for rocket charcoal and how can I see that the temperature is perfect without a thermometre?



Pyrostar

[pudidotdk]

If the outerpart of the charcoal is crumbly and soft and the inner part uncarbonized you might need smaller pieces of wood. How big are your sticks and your cooler roughly?

[Keesthemad]

Nice rockets, I have nothing to add on them...

Wish I had some more time to experiment with them, got som excellent black powder which even gave a report when fired in my musket WITHOUT a bullet... So a rocket with that stuff will go up with a bang !

[Pyrostar]

Hi

My wood-sticks are a bit too big I belive( much bigger and thicker then a thumb).
Sometimes, I have the same problem with willow.
At this time it was pine.

And keesthemad: Your BP will be much too fast for rocket´s I did the same with my 10h milled BP and
all the rocket´s I had built had a CATO.
Now I stuck to Mortar and Pestle BP and I never had a CATO( built 5 rockets, they all went fine)

Check out my video for the burn speed of this BP:

http://www.youtube.com/watch?v=heYhtA28N24

PS: I have made 10 rockets now, they all have a payload.
I´ll record and upload them on youtube.
Check my videos if you want to.


And thanks for the advices,


Pyrostar