What is your project for Thunda Down Under 2019?

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Re: What is your project for Thunda Down Under 2019?

Postby SpaceManMat » Wed Jul 04, 2018 10:02 am

Glad to see to haven’t forgotten us Matthew.
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Re: What is your project for Thunda Down Under 2019?

Postby Lamp » Sat Jul 21, 2018 8:27 pm

After all the manic last minute building to get the 1:1 scale Sparrow/Arcas two stage built in time to fly at the last Thunder, I have no plans. I’m so busy at the moment maybe I could manage an Estes “Alpha” and/or “Big Bertha”...
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Re: What is your project for Thunda Down Under 2019?

Postby drew » Wed Jul 25, 2018 5:25 pm

Lamp wrote:After all the manic last minute building to get the 1:1 scale Sparrow/Arcas two stage built in time to fly at the last Thunder, I have no plans. I’m so busy at the moment maybe I could manage an Estes “Alpha” and/or “Big Bertha”...


No need to fly d00d, I'll be happy just to see you! First round is on me. :D
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Re: What is your project for Thunda Down Under 2019?

Postby kopius » Sat Jul 28, 2018 3:48 am

drew wrote:
Lamp wrote:After all the manic last minute building to get the 1:1 scale Sparrow/Arcas two stage built in time to fly at the last Thunder, I have no plans. I’m so busy at the moment maybe I could manage an Estes “Alpha” and/or “Big Bertha”...


No need to fly d00d, I'll be happy just to see you! First round is on me. :D

Don’t be ridiculous! There is every reason to fly those classics Pete ;-) I’ll still drink your first round though Drew


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Re: What is your project for Thunda Down Under 2019?

Postby matthew » Sat Aug 11, 2018 6:56 pm

SpaceManMat wrote:Glad to see to haven’t forgotten us Matthew.


I would never forget. :)

Kathy and I are looking forward to catching up with everyone again. 8)

Well, project/s have started. I dropped an order into AR a few days ago, and bought some fg and peel ply yesterday. I need to think about a couple of build threads.
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Re: What is your project for Thunda Down Under 2019?

Postby AlBychek » Sat Nov 17, 2018 1:13 pm

Hey Matthew,
It will be good to see you, and everyone else, again at Thunda. Can't wait!
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Re: What is your project for Thunda Down Under 2019?

Postby matthew » Sun Nov 18, 2018 6:22 pm

Hey Al, it's fantastic you're heading down again!

As for projects, I have far too many planned but have narrowed it down to a stretched RB-05A on a M1830, and a J-J 2 stage Darkstar Jr. Others will be if time allows. I'd really like to do a small upscale of my first ever scratch build. I have the parts, but not much spare time...
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Re: What is your project for Thunda Down Under 2019?

Postby matthew » Fri Mar 22, 2019 5:42 pm

Well, I -should- have something to fly. The 2 Stage Darkstar Jr and the RB-05A have made it to painting. I have also reincarnated my Drag Queen from Thunda15. It has a new airframe (the blue tube warped on the original after spending some time in a paddock before being recovered) so it is now dubbed the "Drag Queen, Too". Also made the upscale I talked about in the last post.

rb05a_ds2stg_600x800.jpg
rb05a_ds2stg_600x800.jpg (230.49 KiB) Viewed 257 times


Still have much to do, but gosh darnit, I intend to burn the propellant I bought! :lol:

Edit : oh yeah, if I ever talk about building rockets that have long fin roots again, you have my permission to slap some sense into me. Dang, those fillets took some work. :(
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Re: What is your project for Thunda Down Under 2019?

Postby OverTheTop » Fri Mar 22, 2019 6:05 pm

The Nike Apache is almost done for me. O3400 staging to M2020. Sims to 40k', will probably make 50k' if I am lucky. Peak speed is M2.3, so the sim will likely be a bit (likely a lot) pessimistic. Just finishing camera mounts this week, and putting some reinforcing (JB & cloth) over the sustainer fin leading edges. Pretty happy with where everything is sitting on this.
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Re: What is your project for Thunda Down Under 2019?

Postby Lamp » Sun Mar 24, 2019 1:32 pm

kopius wrote:
drew wrote:No need to fly d00d, I'll be happy just to see you! First round is on me. :D

Don’t be ridiculous! There is every reason to fly those classics Pete ;-) I’ll still drink your first round though Drew


You get the first round Drew and I'll get the second round, Third round is on you Blake! :D
I have given up on flying Estes...But I'm trying to build a 1:1 scale single stage Arcas HV....I feel I have to go with the Arcas again :roll:
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Re: What is your project for Thunda Down Under 2019?

Postby kopius » Wed Mar 27, 2019 8:15 am

I’m trying to pull the old faithfuls to fly as I have been busy rolling tubes for Uni teams and others.

Remember to bring anything and everything to throw into some drag races ;-)


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Re: What is your project for Thunda Down Under 2019?

Postby matthew » Sat Mar 30, 2019 5:17 pm

Another first for me - having to take a ladder to the launch so I can arm my avionics. :lol:

2stgds_ready_600x800.jpg
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Re: What is your project for Thunda Down Under 2019?

Postby air.command » Sun Apr 07, 2019 8:06 pm

We didn't quite get to finish the booster for our 2 stage project for Thunda, but we will be bringing the sustainer with us to fly on it's own. Again we made two of them (red ones) so that if one blows up, we can still fly the other. One has a thinner wall and is lighter and the other has a thicker wall and is heavier.

The overall construction is different to the rocket we flew at thunda last time (yellow rocket in the photo below). These are all carbon fiber, whereas the one we flew last time was part fiberglass part carbon fiber. We are hoping to go at signficantly higher pressures than we flew last time. Hydro tests on test pressure chambers have shown that they were still holding pressure at 1250psi (85 bar) for the thinner wall one, and 1500psi+ (100 bar) for the thicker one. How this however translates to a rocket under acceleration 70-100G is a different question. We will start at 800psi (55bar) for the lighter one for the first flight and then 1000psi (70 bar) for the next flight and 1100psi (75 bar) for the one after. For the thicker wall one we'll start at 1000psi and go up from there, probably 1200psi for the next flight. We are also using a new remote launcher so that we can be 50 meters away from it during launch.
The parachute deployment mechanisms are also completely new, so we'll test those at thunda.

The rocket in the middle is sitting on the staging mechanism from the booster, so we'll be launching the rockets from it to test it.
Horizon1.jpg


About to put on decals from Krusty
Horizon2.jpg
Horizon2.jpg (120.99 KiB) Viewed 72 times


There is a quarter scale model just above the rockets of what the full 2 stage version is going to look like.
Horizon3.jpg
Horizon3.jpg (135.4 KiB) Viewed 72 times
Crop Circles: ... just a bunch of guys looking for their rockets ....

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Re: What is your project for Thunda Down Under 2019?

Postby Lamp » Mon Apr 08, 2019 10:04 pm

air.command wrote:We didn't quite get to finish the booster for our 2 stage project for Thunda, but we will be bringing the sustainer with us to fly on it's own. Again we made two of them (red ones) so that if one blows up, we can still fly the other. One has a thinner wall and is lighter and the other has a thicker wall and is heavier.


It is a pity about your booster George, but your rockets are amazing! It will be great to see them fly. :D
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Re: What is your project for Thunda Down Under 2019?

Postby air.command » Mon Apr 08, 2019 10:15 pm

Thanks Lamp. :) Yup, we underestimated by quite a bit how long it was going to take, well and a lot of procrastinating too. We hope to get it finished by the end of the year in time for another HPR launch in Mullaley later on in the year.
Crop Circles: ... just a bunch of guys looking for their rockets ....


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