Search found 242 matches

by Aquaman33
Wed Dec 11, 2019 8:29 am
Forum: Rocketry Control Room
Topic: Unkown ESA Rocket
Replies: 2
Views: 161

Re: Unkown ESA Rocket

Looks like a stylised Ariane 1. Shorter aspect ratio mainly I think. Thanks OTT. I think you are correct. Looks like a short, fat cartoon version of an Ariane 1. I like the look of this toy, but think I'll build a longer thinner version for better stability. Somewhere between the toy and the real t...
by Aquaman33
Sun Dec 08, 2019 5:08 pm
Forum: Rocketry Control Room
Topic: Unkown ESA Rocket
Replies: 2
Views: 161

Unkown ESA Rocket

I am hoping someone is able to help identify this ESA rocket. My son bought this toy and I thought it would be an interesting scale build (with oversized fins). But I need more info. https://i.ibb.co/ryhNY59/ESA-Rocket.jpg https://i.ibb.co/myPg08j/ESA-Rocket-2.jpg I did some Googling but I can't fin...
by Aquaman33
Thu Dec 05, 2019 1:04 pm
Forum: Low Powered Rocketry
Topic: 3d Printed Rocket for D and E Motors
Replies: 1
Views: 187

Re: 3d Printed Rocket for D and E Motors

And a few days later the build is complete. https://i.ibb.co/F5rVQ67/IMG-8633.jpg https://i.ibb.co/gzh5Msk/IMG-8635.jpg https://i.ibb.co/6spYVtS/IMG-8634.jpg I have done nothing to the 3d printed parts to finish them. I decided to just leave them as they are. I could have spent hours sanding, fillin...
by Aquaman33
Wed Dec 04, 2019 7:30 pm
Forum: How to's
Topic: Down Draft Table
Replies: 12
Views: 863

Re: Down Draft Table

Looks great.

I have always wanted to learn to weld.

Your welds look great for someone who is learning.

Look forward to seeing it when it's finished.
by Aquaman33
Tue Dec 03, 2019 6:21 pm
Forum: Low Powered Rocketry
Topic: 3d Printed Rocket for D and E Motors
Replies: 1
Views: 187

3d Printed Rocket for D and E Motors

I bought a new 3d printer and to celebrate I thought I would teach myself how to use Fusion 360. Until now I have been using SketchUp, which served a purpose, but had some limitations. I thought I should put my very limited Fusion 360 skills and my new printer to the test with a fun, simple rocket d...
by Aquaman33
Mon Dec 02, 2019 3:28 pm
Forum: Mid/High Powered Rocketry
Topic: Derek's Level 2 Build
Replies: 33
Views: 2089

Re: Derek's Level 2 Build

Great update Derek! The fluro colours really stand out. I didn't realize that you had such problems with the fold in the sleeve. The carbon fiber sleeves we use have a similar fold, but we've never had an issue with it once it was wetted out and put on the mandrel. I'll have to keep your workaround...
by Aquaman33
Mon Dec 02, 2019 1:04 pm
Forum: Mid/High Powered Rocketry
Topic: Derek's Level 2 Build
Replies: 33
Views: 2089

Re: Derek's Level 2 Build

After a few delays for various reasons I have finally started work on the body tubes. As mentioned previously I wanted to strengthen the cardboard tubes with fiberglass sleeves: https://i.ibb.co/6bn9mw9/IMG-7245-2.jpg I wrapped 2 couplers in Teflon tape and inserted them in either end of the body tu...
by Aquaman33
Tue Nov 26, 2019 6:34 pm
Forum: How's the Weather..?
Topic: LEGO Rocketry
Replies: 15
Views: 2962

Re: LEGO Rocketry

Love this:

by Aquaman33
Mon Nov 18, 2019 3:57 pm
Forum: Mid/High Powered Rocketry
Topic: Derek's Level 2 Build
Replies: 33
Views: 2089

Re: Derek's Level 2 Build

If you want to know what diameter it’s using then look at the measurements for CG and CP, I think it will be the largest diameter. Bigger question is what is stable for an odd shaped rocket. The caliber rule is based on an assumption that the rocket is of normal proportions, an alternative rule of ...
by Aquaman33
Fri Nov 08, 2019 8:07 am
Forum: Mid/High Powered Rocketry
Topic: Derek's Level 2 Build
Replies: 33
Views: 2089

Re: Derek's Level 2 Build

OpenRocket is giving a stability caliber of approximately 1.6x for some J motors. This is a bit low for my liking, especially if I end up building the back end a little heavy. But this stability is calculated based on the diameter of the rear body tube. Does anyone know if there are special conside...
by Aquaman33
Fri Nov 08, 2019 8:06 am
Forum: Mid/High Powered Rocketry
Topic: Derek's Level 2 Build
Replies: 33
Views: 2089

Re: Derek's Level 2 Build

I use 3mm push rivets like this for my rockets: images.jpg If you just push the outer in, and completely remove the center pin, the shear force is significantly reduced for an easier ejection. Thanks OTC. I have some rivets that look very similar to those, but I also have some of these sheer pins: ...
by Aquaman33
Tue Nov 05, 2019 7:43 pm
Forum: Mid/High Powered Rocketry
Topic: Derek's Level 2 Build
Replies: 33
Views: 2089

Re: Derek's Level 2 Build

That's an interesting design Derek. I don't think I have seen a motor mount go through the transition, but looks good! With a draggy back end like that, will you be using shear pins on the nosecone to avoid drag separation, especially if you end up adding nose weight? Yes, I think shear pins will b...
by Aquaman33
Sun Nov 03, 2019 9:11 pm
Forum: Mid/High Powered Rocketry
Topic: Derek's Level 2 Build
Replies: 33
Views: 2089

Re: Derek's Level 2 Build

This thread (and this project) had gone a little dormant as I have been procrastinating. The design of this rocket just wasn't doing it for me, so I decided to make some changes. It's my L2 so I want it to be right. :D The result of lots of pondering is this: https://i.ibb.co/hyxL95j/Screen-Shot-201...
by Aquaman33
Wed Oct 23, 2019 11:45 am
Forum: Rocketry Control Room
Topic: NZ Rocket Jobs
Replies: 2
Views: 201

NZ Rocket Jobs

A few interesting opportunities in NZ.

Image
by Aquaman33
Tue Oct 22, 2019 8:06 pm
Forum: Self Introductions
Topic: Hello from the Upper Hunter
Replies: 4
Views: 716

Re: Hello from the Upper Hunter

Hi Peter, Welcome to the forum! There have been a few posts on here in the past few months from people that live near Newcastle, the Hunter valley and Coffs Harbour. Almost enough to start a club :D NSW Rocketry Association is your nearest club. http://www.nswrocketry.org.au/ The club members launch...

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