Australian Rocketry Association INC
June 28, 2017, 03:34:47 PM *
Welcome, Guest. Please login or register.

Login with username, password and session length
News: Congrats to Mr F from EPR on his Level 2
 
   Home   Help Login Register  
Pages: [1]   Go Down
  Print  
Author Topic: Terra Australis Booster Rebuild  (Read 4218 times)
0 Members and 1 Guest are viewing this topic.
EMiR
ARA Member

Offline Offline

Posts: 1066


Sir L3


WWW
« on: August 13, 2012, 09:22:07 PM »

So after breaking one of the fins, time to rebuild with an improved design. (see if I can't get it a little higher and faster)

I won't say what the redesign is just yet, I'll let it unfold with pictures over the coming week or so.

Hopefully it will be ready for ARQ's Sept Launch, and W.A's Doomsday

first step in the rebuild..

Machine some parts...??



all up these weigh 450g, when I finish with them they should be down to ~200g
Logged

wolflair
ARA Member

Offline Offline

Posts: 4357


V2


WWW
« Reply #1 on: August 13, 2012, 09:29:38 PM »

nice machining there mate
Logged

Join the Australian Rocketry Association INC the largest model and high power rocketry organisation in Australia

ARA # 007
ARA Level 3

WRL Rocketry
Australian Aerotech Dealer
Australian Rocketry Fo
EMiR
ARA Member

Offline Offline

Posts: 1066


Sir L3


WWW
« Reply #2 on: August 13, 2012, 09:43:31 PM »

Thanks Wolf,

Also putting the rocket on a diet, I should be able to get a 1kg - 3kg out of the glow. (-15% thereabouts)

I've got 100g out of the boat tail so far, with another 50-100g more to take of it, as a start. (50% reduction)

If I can get it 15-20% lighter and a 20% decrease in fin drag, I should see a nice increase in the Max Alt and speed.

It was well over optimal weight for the record flight. so hopefully I'll see it break the 20,000' mark this time around.
Logged

EMiR
ARA Member

Offline Offline

Posts: 1066


Sir L3


WWW
« Reply #3 on: August 17, 2012, 08:08:23 AM »





Logged

Rocketmad
ARA Member

Offline Offline

Posts: 968


I am what I am


« Reply #4 on: August 17, 2012, 09:50:34 AM »

EMiR you have some great tools, are they yours?
i wish i had a shed with a lathe and stuff, i would live in it, that would pee the missis off  diztongue
Logged
hotspot
ARA Member

Offline Offline

Posts: 1023


« Reply #5 on: August 17, 2012, 09:24:14 PM »

Your home is your cave you can do what ever you want I do.
Logged
EMiR
ARA Member

Offline Offline

Posts: 1066


Sir L3


WWW
« Reply #6 on: August 18, 2012, 08:56:23 AM »

these machines, belong to friend.
but I did buy a smaller Lathe/Mill combo machine for my self. (500mm Centre with over the bed mill)




Logged

EMiR
ARA Member

Offline Offline

Posts: 1066


Sir L3


WWW
« Reply #7 on: August 18, 2012, 09:12:39 AM »

So after a bit of creative TIG Welding, it comes together

Big thanks to my friend Oli, from MetalCraft International, for helping with this....










So all up, this booster is now 700g Lighter than the Carbon booster previous, and has 30% less CD on the fins.
Logged

DragonFlight

Offline Offline

Posts: 2



« Reply #8 on: August 18, 2012, 08:25:27 PM »

Looks good, mate! :-) That's gonna' look mighty fine on the pad... ;-)
Logged

Stop the Rock!!!  I want to get off!
EMiR
ARA Member

Offline Offline

Posts: 1066


Sir L3


WWW
« Reply #9 on: September 04, 2012, 06:15:39 PM »

Who would have though metal fins on a rocket like this would cause an issue  bllipsrsealed

Though I think on rockets like this, there is a place for them.
and see no problem with the build.

But I have to yield to the rules and regs, So I have started to rebuild with Carbon/Ply fins

This time around, the fins are laid up in a 3Ply/3Carbon/3Ply/3Carbon/3Ply arrangement, with 2Carbon to be added to out sides later.
even with this stack, I've managed to keep the thickness to 3.5mm, reducing from over 5mm on the original fins, giving me a 30% reduction.



great thing is, I can reuse the original booster tubing, which I'll get some pictures of the hack and slash on that over the next day or so

Logged

Rocketmad
ARA Member

Offline Offline

Posts: 968


I am what I am


« Reply #10 on: September 04, 2012, 07:28:38 PM »

i am hearing you EMiR but carbon fiber will do nicely still
Logged
EMiR
ARA Member

Offline Offline

Posts: 1066


Sir L3


WWW
« Reply #11 on: September 10, 2012, 12:23:09 PM »

Got the Fins cut and shaped over the weekend.

These will be surface mounted, with Tip 2 Tip Carbon as top layers



Logged

Pages: [1]   Go Up
  Print  
 
Jump to:  

Design By simply sibyl And CreateAForum.com
Powered by SMF 1.1.20 | SMF © 2013, Simple Machines