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Some new interesting launches :)


MinamotoKobayashi

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Hello.

First of all I must thanks a lot Zmuro because he have built for me a giant tool set that has permitted me to built a massive

1Kg core burner r-candy rocket with a very long conic spindle.

The total lenght of the rocket was 410mm, the inside diameter 38mm, the wall thickness 2mm.

I used a reusable aluminum body with 3x1250mm long samba sticks to counterbalance the rocket.

This rocket will be suitable for 8" and perhaps 10" shells. There is again space to improve the thrust, such as increase the packing pressure,

reducing the titanium percentage and adding perlite to the mix.

Here is the impressive launch:

 

https://youtu.be/f-tNnd2BWqE

 

Then, I built a scary 4 inch shell half filled with flash powder+titanium+rice hulls as fluffing agent.

I used a r-candy powdered rocket suitable for 5 inch shells, and since the ball was relatively heavy, I reached an average altitude of 500 meters!

The shell was heavy confined to improve the explosion a lot.

It was used about 150 grams of flash powder (58% KCLO4 and 42% German Dark formula).

 

https://youtu.be/c9NT7aJENm8

 

My cameraman-friend was so scared from the big dazzling flash generated (it seemed a sun in the night) that lower the camera almost istantly :)

Obiouvsly the cell microphone could not capture the tremendous loud bang of the explosion.

Here is a shot of the explosion. Take a look how big show the flash at 500 meters (no zoom):

 

48289145382_222538bba4_b.jpg

 

Finally, a beautiful 6" shell with golden glitters+red+strobe:

 

https://youtu.be/1DzJ40SvAf0

 

Enjoy :)

Edited by MinamotoKobayashi
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Hi Bigmark.

I'm about to build another version.

The new version will have a lot of improvements:

 

- I will increase the packing pressure of the mix inside the rocket;

- I will add 10% perlite;

- I will eliminate the titanium mixed inside the r-candy granulated mix and I will add finer mesh only in the delay part.

 

These three moddings will enhance a lot the thrust.

 

I will post a full tutorial in a new thread, stay tuned :)

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:)

Please be patient, I'm just prepping the propellant. This kind of rocket needs about 700 grams of granulated r-candy mix!

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