Show us your hybrid

Discussions on hybrid rocketry including rockets, motors and technologies.

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Voyager
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Re: Show us your hybrid

Postby Voyager » Sun May 20, 2018 10:41 pm

TRA 14574 L2 (CRG)
AMRS 199 L2 (NSWRA)

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CATO
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Re: Show us your hybrid

Postby CATO » Mon May 21, 2018 6:53 am

"In thrust we trust"

AMRS 21 L3 RSO
TRA 07459 L3


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Voyager
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Re: Show us your hybrid

Postby Voyager » Mon May 21, 2018 11:12 am

TRA 14574 L2 (CRG)
AMRS 199 L2 (NSWRA)

strud
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Re: Show us your hybrid

Postby strud » Wed May 22, 2019 9:28 am

Hybrids are different in many ways, not all "more betterer"

- lower perceived cost in larger impulse launches (ie consumables, not in support equip etc)
- novel flight differences - longer thrust duration, different sound, lower thrust level at higher impulse etc
- higher complexity - need to bring a lot more gear to the launch, actual launch is more complicated (more to go wrong, more to think about)
- no engine delay ejection ie must have independent recovery control system

Some of the most 'fun' launches I have done were 2 stage with hybrid sustainers that had 10s+ burn times :D Another real crowd pleaser I can remember was TPs at WWW2010*?) that was 'going into orbit' as TP put it.

All that being said, they are interesting and in bigger impulse flights will be the way I proceed mostly.

There does seem to be a limit that commercial motors hit around the M class and indeed not many manufacturers seem to be about for the long haul.

CATO - happy to assist with any questions you have and with GSE etc.

Oh by the way, anyone bought N2O lately? What is it costing nowadays?

strud
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Re: Show us your hybrid

Postby strud » Wed May 22, 2019 9:38 am

Just remembered there are a few videos drew put up of the commercial motors I've flown (rattworks)



Will have to look harder for some others....

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Voyager
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Re: Show us your hybrid

Postby Voyager » Wed May 22, 2019 10:45 pm

TRA 14574 L2 (CRG)
AMRS 199 L2 (NSWRA)

strud
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Re: Show us your hybrid

Postby strud » Wed May 29, 2019 5:15 pm

Hi Voyager

Is that from BOC?

I got a price of $225 + GST about a week ago from them so a bit more than your paying.

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Voyager
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Re: Show us your hybrid

Postby Voyager » Sat Jun 01, 2019 5:15 pm

TRA 14574 L2 (CRG)
AMRS 199 L2 (NSWRA)

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Re: Show us your hybrid

Postby Voyager » Sat Jun 01, 2019 5:29 pm

Here is my extended Double Shot 2nd stage on a Contrail 38mm 36" motor with a J246-HP grain and medium nozzle at our last HPR launch in April. The flight was with a redundant dual deploy configuration using Altus Metrum EasyMinis. A Featherweight GPS Tracker was installed in the nosecone. The darker mid section is the required extension to accommodate the 36" motor tube. The flights with this configuration have been impressive.

contrail-38mm-J246-hybrid-1-s2.jpg
contrail-38mm-J246-hybrid-1-s2.jpg (145.5 KiB) Viewed 174 times
TRA 14574 L2 (CRG)
AMRS 199 L2 (NSWRA)


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