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Hybrid ThorJack

Post questions and info about hybrid (compressed gas with fuel) powered cannons here. This includes discussion about fuels, ratios, ignition systems, build types, safety, and anything else relevant.
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Unread postAuthor: Petitlu » Tue Jun 12, 2012 1:08 am

when you ordered?
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Unread postAuthor: jackssmirkingrevenge » Tue Jun 12, 2012 1:14 am

about the time we had this conversation.
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Unread postAuthor: Petitlu » Tue Jun 12, 2012 1:22 am

ok !

I have the memory of a goldfish!

3s ! :D
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Unread postAuthor: Petitlu » Fri Jun 15, 2012 12:47 am

little information:
The ThorJack entered the Hall of Fame! :D

http://patator.frbb.net/t10100-2012-thorjack
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Unread postAuthor: Petitlu » Fri Jun 15, 2012 5:15 pm

Well, tomorrow is the big day!

The beautiful JSR missile will explode the brake disc!

Everything is ready, the four cameras have their batteries charged block!

I doubled the thickness of my rupture disk, two disks cut from a "1664" steel so.
I even made a triple-layer disc! (sounds a bit PQ (toilet paper ...))
I know not yet how disk I will put to fire.
I look forward tomorrow morning, the preparation will be long I feel ....

:D
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Unread postAuthor: jackssmirkingrevenge » Sat Jun 16, 2012 1:42 am

Fine, this is me for the rest of the day!

Image

Good luck :D
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Unread postAuthor: Petitlu » Sat Jun 16, 2012 8:47 am

bé ... I spent 3 hours in the fields of Grandpa!

The preparation was fairly long, just install, level, be careful that the missile arrives ... well at 90 ° positioning of cameras and four more with 35 ° c on the skull!

In addition I have been unlucky with the videos ....
Same with the projectile ...

Overall it's still not too bad! :wink:
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Unread postAuthor: Petitlu » Sat Jun 16, 2012 9:41 am

Vidéo !

[youtube]http://www.youtube.com/watch?v=J4tGRnOh9zE[/youtube]
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Unread postAuthor: Petitlu » Sat Jun 16, 2012 12:32 pm

Another short video where we see the traces on the disk, the projectile took "the edge" or I think it would have passed through.
We see not there but on the other side of the disc can feel a bump

[youtube]http://www.youtube.com/watch?v=ncgU_7k8n6M[/youtube]
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Unread postAuthor: jackssmirkingrevenge » Sun Jun 17, 2012 12:53 am

Wow.

When I saw the aquarium shatter, my first thought was "yay, full penetration!" followed immediately after by "ah, pure energy transfer. boooo!"

Damn, it hit the radial support! Still, impressive penetration nonetheless :) how many millimetres is that?

Also, that's a lot of brass splatter, not much left! Is it just me though or did the tail break off?
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Unread postAuthor: Petitlu » Sun Jun 17, 2012 2:07 am

I had not seen but yes it is the tail that stands out!

There was no chance of hitting in the radial ....
Total penetration: 15mm - D6mm
impact on the second disc and a slight hump on the back of the disk, as we see on a picture, the disc is cracked!
I am sure that without the projectile passed through the radial!
It faudait also replace the tungsten carbide tungsten pure!

I said that for the first time I doubled the rupture disc!

EDIT : I made ​​a mistake for the 1000fps video, I forgot that the rust dust mask the projectile ...
I'll take the second disc that had no rust on it .... sorry

I hope you're not too disappointed throughout this test!
I am quite satisfied, there are lessons to be drawn from all this!
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Unread postAuthor: jackssmirkingrevenge » Sun Jun 17, 2012 2:55 am

Petitlu wrote:I hope you're not too disappointed throughout this test!


Nothing disappointing about punching through well over 1/2" of steel plate!

Most firearms don't even come close to that kind of penetration ;) so kudos!

It's a shame about the fact it hit it at the thickest point, but I have a feeling you're going to try again with one of the delrin-finned carbide rounds ;)
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Unread postAuthor: Petitlu » Sun Jun 17, 2012 12:32 pm

This is a success!

Effectively, I'll pull back on the disk with several tungsten projectile with! :D
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Unread postAuthor: jackssmirkingrevenge » Sun Jun 17, 2012 1:48 pm

Petitlu wrote:Effectively, I'll pull back on the disk with several tungsten projectile with! :D


...until it looks like this :D
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Unread postAuthor: Labtecpower » Sun Jun 17, 2012 1:51 pm

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