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Pirate spaceship

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BruceS

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Next build thread. Inspired by "The Road Not Taken" by Harry Turtledove and a Michael's birdhouse.IMG_20200412_205126.jpg
Removed the nose
IMG_20200412_205126.jpg IMG_20200417_204438.jpg
Using Scorchmark to highlight the staves.
Drilled out the bottom.
Next, install the captain, body tube w/motor mount, and nose.
 

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KenECoyote

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OMG! I have the same one...my wife and daughter got it for me for Father's Day many years back. :D

Definitely interested in watching because while I dreamed of this, I didn't know of how it could be done.
 

GlenP

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Yeah, that's not the captain, he is the pirate who is trying to steal the Cap'n Crunch!
 

Crawf56

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Ok, really love this...…..but I am aerodynamically confused. Does there need to be a "cannon" on the other side of the rocket, to balance out?
 

BruceS

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Initial spin test. Good and bad. Will try adding a little more fin. (Damn I'm dizzy).
 

BruceS

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Added cardboard fins to test. Now to build out of balsa and glue on.
 

BruceS

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Not enough fin space is why I went with a large "engine bell" cone for drag stabilization.
I didn't believe the simulation that showed it stable. The small fin extensions appear to be adequate.
 

BABAR

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Both successful and entertaining!
Congrats.
 

BruceS

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Second launch on Estes D12-3 with 1oz nose weight added. More power needed?
 

neil_w

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More nose weight, probably. That's a very tough shape to get stable.

More power (e.g., an E20 or E30) is always good, but I suspect you've got a basic CG/CP problem to solve first.
 

BABAR

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More nose weight, probably. That's a very tough shape to get stable.

More power (e.g., an E20 or E30) is always good, but I suspect you've got a basic CG/CP problem to solve first.
Agree on problem, not the solution.

Adding nose weight at the same time you add bigger motors is kind of a push me pull you situation, as your go up on the motor you are adding tail weight, and as you go up on the nose weight you need more motor to get it up to speed....l

Seems like the solution may be to go more the @jadebox Akavish approach


Or Odd’l rockets Sputnik


Yours is a pirate ship. Put the masts on the bottom and put the fins (sails?) at the bottom of the masts. This will easily move your CP back and simultaneously move the CG forward, in fact it is almost a tractor type with the motor well forward of the tail.

You will need some strong dowels to make the masts, as assuming forward eject it is going to come down hard on the masts.
 

BABAR

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Another idea would be some anchor shaped fins below the current ones
 

Funkworks

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What would happen if there were a few “cannons” (tubes) sticking out the front and back of the bulge? Drag I suppose but not so much because well, tubes are hollow.

Never saw that before, but then I never saw a big-waisted rocket before either. Just throwing it out there.
 

BruceS

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Great suggestions, but I really like the way it looks. Going to try increased nose weight and an E30-4 engine first.
 

Daddyisabar

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It's bulbusness is not letting any clean airflow to your stabilizing surfaces. Same problem kaboom krew had with their oddroc. Power and nose weight will help but a more thorough mindsim is needed. Extendo fins if motor is in the back...where it should not be!
 

modeltrains

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Could be amusing if the nosecone ejection charge launches about a cup of Capn Crunch cereal in to the wind.
Flight physics might be iffy but it succeeds brilliantly at being a cheerful looking rocket.
 
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