Deployment charge

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NewtonsLaws
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Deployment charge

Postby NewtonsLaws » Sun Aug 13, 2017 7:26 am

I have had success so far with my tiny bag/masking tape deployment "caps" for dual deploy rockets.

But I have been seeing some rocketeers using other methods.

What have people been using?

I found this: https://macperformancerocketry.com/collections/aluminum-deployment-charge-canisters/products/aluminum-deployment-charge-canisters

As a reference from http://www.rocketryforum.com/showthread.php?133688-Madcow-AGM-33-Pike-8%94-L3-Cert-Build-quot-Maximum-Plaid-quot

What are your thoughts?
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SpaceManMat
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Re: Deployment charge

Postby SpaceManMat » Sun Aug 13, 2017 4:03 pm

Unfortunately charge wells is one of a few things that Blake does not offer.

I've used Dog House Rocketry in the past (now part of Binder Design)

http://binderdesign.com/store/page29.html
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str8up
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Re: Deployment charge

Postby str8up » Sun Aug 13, 2017 7:49 pm

Empty shotgun cartridges do exactly the same job and they are a hell of a lot cheaper - a 1/4 BSW screws through the primer pocket neatly and seals it. I even went very fancy using 'blue' shells for the primary charge and 'red' shells for the back up charge.
In the past I used charge cups (shotgun shells) but now make up my ejection charges using centrifuge vials - drill a hole through the bottom to put an ematch inside - seal the hole with hot glue or just tape it. Add BP charge, fill any remaining space with recovery wadding and tape the lot to seal it.

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NewtonsLaws
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Re: Deployment charge

Postby NewtonsLaws » Wed Aug 16, 2017 8:06 pm

Thanks awesome Str8up!

Where do you get the vials?
I found this but does not seem right. https://www.westlab.com.au/consumables/plasticware/tubes/153-559-micro-centrifuge-tube-15ml-pp-attached-cap
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AMRS #134 L2 RSO / LCO

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OverTheTop
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Re: Deployment charge

Postby OverTheTop » Wed Aug 16, 2017 8:16 pm

eBay is good for centrifuge vials.

I turn up my own canisters. I struck on the idea of leaving an o-ring groove on the top. When taping the tops closed sometimes the tape does not stick. It does not inspire confidence. An o-ring slipped over the tape holds it nice and secure.
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Burying them in the enclosure also saves space in the chute bay.
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str8up
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Re: Deployment charge

Postby str8up » Wed Aug 16, 2017 9:24 pm

Hey Rob, Will bring both the "shotgun case" set up and the vials to show you on Sunday.


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