Rails for Thunda

Australian Rocketry's Thunda Down Under 2015

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jimnz
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Rails for Thunda

Postby jimnz » Fri Dec 12, 2014 2:44 pm

So is 1530 the biggest rail or will there be something like a Unistrut as well?

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Scoop1261
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Re: Rails for Thunda

Postby Scoop1261 » Fri Dec 12, 2014 3:23 pm

Hey Jim,

I'm talking to someone, who's talking to someone, that knows someone that owns a trailer mounted rig to see if it will handle a unistrut rail and a big assed rocket ...... Hopefully the news will be positive!
Why Limit Yourself?

AMRS #4 - L3 |TRA #11080 - L3 |MDRA #263

Impulse: A Whole Lot ..So much I've lost count!

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cryoscum
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Re: Rails for Thunda

Postby cryoscum » Fri Dec 12, 2014 3:45 pm

The big trailer has a >5m long 1515 rail mounted on a big steel truss that'll handle anything short of a car being launched from it! There are other trailers and many fixed rail launch pads too. Do you know yourexpected lift-off weight, Jim?
AMRS L3 | NAR L3 | QRS 089 | MDRA 224
AMRS Technical Advisory Group

Total impulse for 2016: 32,458 Ns (thus far)
Total impulse for 2015: 84,231 Ns
Total impulse for 2014: 40,757 Ns
Total impulse for 2013: 62,927 Ns

jimnz
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Re: Rails for Thunda

Postby jimnz » Sat Dec 13, 2014 10:53 am

She runs about 17-18 kg GTOW with the old booster. Having to build a new booster after last flight so weight may go up or down a bit.
Main issue for me is M8 bolts on the lugs. Would have to make some thread adaptors to fit M6 for the 1530 rail. (It is a 125mm Black Brant on a 150mm booster)

Also need a 3 rail lug-less launcher for 29mm rocket. I have one here that easily attaches to a standard rail but it is too big to ship/carry. I'm still working on it.
Jim

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cryoscum
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Re: Rails for Thunda

Postby cryoscum » Sat Dec 13, 2014 1:11 pm

There will be launch towers for 3 and 4 fin arrangements for rockets from 29mm to 4". If anybody needs anything bigger, like for a minimum diameter O25000 or the 6" Gorilla stuff, let me know ASAP...
AMRS L3 | NAR L3 | QRS 089 | MDRA 224
AMRS Technical Advisory Group

Total impulse for 2016: 32,458 Ns (thus far)
Total impulse for 2015: 84,231 Ns
Total impulse for 2014: 40,757 Ns
Total impulse for 2013: 62,927 Ns

jimnz
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Re: Rails for Thunda

Postby jimnz » Sat Dec 13, 2014 1:20 pm

Brilliant! Saves me one project. Will it go down small enough for a 29mm Outside Diameter tube?

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cryoscum
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Re: Rails for Thunda

Postby cryoscum » Sat Dec 13, 2014 4:01 pm

jimnz wrote:Brilliant! Saves me one project. Will it go down small enough for a 29mm Outside Diameter tube?


Yup, good down to 24mm...
AMRS L3 | NAR L3 | QRS 089 | MDRA 224
AMRS Technical Advisory Group

Total impulse for 2016: 32,458 Ns (thus far)
Total impulse for 2015: 84,231 Ns
Total impulse for 2014: 40,757 Ns
Total impulse for 2013: 62,927 Ns


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