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Poseidon- High Powered Modified H2O Rocket Answered

Just thought I would give those interested a sneak peak at the Poseidon's main booster module.

Construction-
12 x 1.25L Soda bottles spliced with external sleeves using Sikaflex 11FC.

The Poseidon's booster module is not yet complete, it has another 7L of capacity to be added. The booster will then be combined with several other modules before Poseidon is ready for launch.

You may also like to note the quick attach/release fin system. They are saw toothed sign holders normally found in stationary shops. They allow the fins not only to be attached perpendicular to the body, but also provide a reproducible fixing method.

Although this is not my preferred method of splicing, Aircommand.com has put together an excellent tutorial which can show you the principal. My method (which I DID NOT create) involves shrinking the inner bottle with our curled lip. Air command in that tutorial reduces the outside sheath from a larger capacity bottle to suit. The method I use does not call for the use of different sized bottles or a blow torch, just boiling water. Air Commands Splicing tutorial

Aircommand.com

35 Replies

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kelseymh (author)2009-01-07

FYI -- if you're putting together your I'ble, don't publish it until tomorrow! See Eric's pre-announcement in his "Green Year" topic.

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starwing123 (author)2009-01-06

What do you mean by main booster? That implies there are other boosters.

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Lftndbt (author)starwing1232009-01-06

There is a mock version of the sustainers and rocket here...

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Lftndbt (author)starwing1232009-01-06

Yup yup... I can't find where I called it the "main" booster, but if I did i'll correct myself and say. This is the Poseidons booster module. It will be accompanied by 3 sustainers and the actual rocket itself. This booster will hopefully "drop-away", followed by the sustainer module and parachute back down after they are exhausted.

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kelseymh (author)2009-01-04

You'd better be putting together an Instructable for this :-) It is extremely impressive, and deserves to be fully documented, including performance characteristics and launch videos (as Kiteman said).

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Lftndbt (author)kelseymh2009-01-04

Don't worry my friend. As a seasoned Instructabler I habitually take photos as I complete step. I am still a long way off finishing Poseidon. Many manifolds and mechanisms need to be manufactured to complete the upper trident unit. This is just the booster which will "drop away" once it has finished its burn phase.

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killerjackalope (author)Lftndbt2009-01-06

I love the way you've got modules named and the nautical myth theme going on, it makes it sound like pro jargon.

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Lftndbt (author)killerjackalope2009-01-06

LoL. No not "pro jargon" but just me trying to be creative.

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Kiteman (author)2009-01-04

I just made a little "oh" face.

You've really got to make sure you get a good video of its launch and flight.

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Lithium Rain (author)Lftndbt2009-01-05

HAHAHAHAHA! That's the best.

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Kiteman (author)Lithium Rain2009-01-05

Hmm... So many liberties taken with my avatar...

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kelseymh (author)Kiteman2009-01-06

Hmmmm....maybe someone should send Eric an envelope full of them to decorate his boring office door :-)

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Kiteman (author)kelseymh2009-01-06

I think the real fun with my avatar happened before you joined - it started as a very pixelated image I pinched from a BBC website (it was a button linking to a forum which no longer exists). I used it for a while, then got bored and re-drew it. Oh, the consternation! People were shocked by the change, so I let them loose on it themselves - there were pirate Kitemen, chinese Kitemen, grizzled Kitemen. Adrian even re-drew it to suit Kitewife.

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Lithium Rain (author)Kiteman2009-01-06

I'm just looking forward to when Thing One and Thing Two join. ;) Unless I miss my guess, I calculate this should occur in approximately two years. I already have a couple ideas up my sleeve...

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Kiteman (author)Lithium Rain2009-01-06

#1 already has an account (he has his own internet identity, so I "reserved" it for him), he's just not allowed to use it yet. He will be soon, though. I'll let him sort out his own avatar, but I'll let him know you have... ideas. #2 is only 8, and not really interested in the internet.

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Lithium Rain (author)Kiteman2009-01-06

Ooo! >Goes off to find #1 account<

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Lftndbt (author)Kiteman2009-01-05

Sorry. I'll remove it if you like.

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Kiteman (author)Lftndbt2009-01-06

No, it's fine. I guess it's just what happens when you keep the same basic avatar for so long - people expect it to look the way your posts sound.

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Lftndbt (author)Kiteman2009-01-06

That is exactley it!! I just needed to see "your" face.

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Lftndbt (author)Kiteman2009-01-04

Poseidon will carry an on-board video module containing a light weight recording device. I will also record the launch from the ground.

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Kiteman (author)Lftndbt2009-01-05

Excellent news. Do you have an expected altitude?

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Lftndbt (author)Kiteman2009-01-06

Conservativley speaking 300ft according to several simulators. It's not going to break any world records on its own though.

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Kiteman (author)Lftndbt2009-01-06

300' is plenty for a start isn't it? You can start tweaking for altitude later.

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xACIDITYx (author)Kiteman2009-01-06

99 guzillion billion yards 2

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Lftndbt (author)xACIDITYx2009-01-06

LoL... that would be nice.

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killerjackalope (author)Kiteman2009-01-06

Hmm that reminds me about the one I've been meaning to post, which is pointed directly at being simpler than any I've ever seen and fairly foolproof, plus without modification the launch pressure is always very consistent, if you ever wanted an aerodynamics project base that's not a paper plane.

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KentsOkay (author)2009-01-05

One word;
BOOYAH! !

methinks i need to post more rockets...

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kelseymh (author)KentsOkay2009-01-05

Well, duh! It would make your username seem less, er, arbitrary :-)

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KentsOkay (author)kelseymh2009-01-05

Hey, I posted an awesome bottle rocket :P When I joined this site, it was with the intention of posting said rocket. Oddly enough, I didn't get around to posting until a few ibles later... It's to late to change my name, my entire web identity is based upon RocketScientist2015

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Lftndbt (author)KentsOkay2009-01-06

I missed that one. Just read it then. Nice.

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Lftndbt (author)KentsOkay2009-01-05

That would be an excellent idea indeed.

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