Polaron G2 - Build thread

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air.command
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Re: Polaron G2 - Build thread

Postby air.command » Wed Apr 13, 2011 10:18 am

Update: The Polaron G2 can now be used as a quick and easy sculpting tool. It allows you to create interesting rocket range sculptures from launchers:

Image

Here is an update with photos and slow-mo video of the sculpting process:
http://www.aircommandrockets.com/day103.htm

The update also covers the new side deploy mechansim.
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Re: Polaron G2 - Build thread

Postby Scoop1261 » Wed Apr 13, 2011 10:48 am

"Doonside.........We have a problem!" ......."We appear to be venting something"


Sorry to see the damage George......but I'm sure your team will recover.........and the sculptures are quite interesting
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Re: Polaron G2 - Build thread

Postby october sky » Wed Apr 13, 2011 3:24 pm

There sure was incredible amount of force in play there !! :shock:

Even though the "sculpture" looks great I'm sure it would have been nice to see it perform as it should have been.

May I just repeat what I have said before : George is NASA of water rockets ! 8) You do fantastic work ! :D
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Re: Polaron G2 - Build thread

Postby air.command » Thu Apr 14, 2011 1:35 pm

october sky wrote:There sure was incredible amount of force in play there !!


I think we will extend the hose and launch string even further with these rockets.


At 250psi there is about 123 metric tons collectively pushing on the inside walls of the rocket. (I know the number is pretty silly one to calculate. :wink: ) Out of the 1100 odd square inches of surface area, one of them just wasn't up to scratch.
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Re: Polaron G2 - Build thread

Postby ROCKet STAR » Fri Apr 15, 2011 8:57 am

Wow, that must have made a few people jump! Sorry to see the damage George, I hope it hasn't set you back too far. Seeing something like that really reinforces to me the healthy respect that compressed gasses deserve.
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Re: Polaron G2 - Build thread

Postby cha05cat » Fri Apr 15, 2011 1:00 pm

air.command wrote:
october sky wrote:There sure was incredible amount of force in play there !!


I think we will extend the hose and launch string even further with these rockets.


At 250psi there is about 123 metric tons collectively pushing on the inside walls of the rocket. (I know the number is pretty silly one to calculate. :wink: ) Out of the 1100 odd square inches of surface area, one of them just wasn't up to scratch.


Thats insane!!!!! I LIKE IT! :twisted:
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Re: Polaron G2 - Build thread

Postby PK » Fri Apr 15, 2011 5:49 pm

Can I sugguest that the lesson here is: "String is not an approprate material for the structure of a rocket launcher."

:-)
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Re: Polaron G2 - Build thread

Postby cha05cat » Fri Apr 15, 2011 6:15 pm

That isn't string! Its top quality dental floss mate! :roll:
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Re: Polaron G2 - Build thread

Postby air.command » Tue May 10, 2011 10:54 pm

hee hee ... all strings removed (they were actually pretty annoying) .... and new rail launcher built:



(in HD here: http://www.youtube.com/watch?v=UZg7_cU5oFs)
And full details are here: http://www.aircommandrockets.com/day104.htm

We also repaired the rocket after the CATO and had a great flight with it last weekend. We launched it at a lower pressure (210psi) to get at least one good flight in. We'll increase the pressure again on subsequent flights. I could tell from watching the flight that there were bigger loads on the rocket than normal and will need to make things stronger on future versions. Top speed was 269km/h. Running the sims tells us we should be able to eek out a couple more hundred feet if we launch at the design pressure of ~250psi.

Highlights video is here:


(in HD: http://www.youtube.com/watch?v=e8gi6Ky0b1c )



Full launch day report is here:
http://www.aircommandrockets.com/day105.htm
Crop Circles: ... just a bunch of guys looking for their rockets ....

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Re: Polaron G2 - Build thread

Postby KennethThomas » Tue Apr 24, 2018 8:37 pm

Lol this post reminded me of this deep-fried https://bestairfryer.reviews/large-capacity/


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