DIRECT 3.0 launchers
Author
Discussion

MartG

Original Poster:

22,314 posts

226 months

Thursday 11th November 2010
quotequote all
For a while now I’ve been intrigued by the Jupiter family of launch vehicle contained in the DIRECT 3.0 proposal – this proposal was to cancel NASAs Ares I and V launcher development and replace them with two versions of a cheaper ( and quicker to develop ) single vehicle. This would have a 1st stage based on the Shuttle external tank with two SRBs and a payload fairing on the nose – an optional 2nd stage would be used for heavier lift missions. The favoured configurations are known as Jupiter-130 and Jupiter-246 – see www.directlauncher.com for more details



As the only model available to date is a paper one, I decided to have a bash at making them in 1/144 scale in resin.



The first part I made was the SRBs – I made these in several sections as the Jupiter proposals include options for the existing 4 segment SRBs and the 5 segment version developed for Ares and wanted to have the option of building either version.







Then I started work on the core 1st stage – the pic below shows the first test shot fresh from the mould tonight.







Now to start on the payload fairings ( standard and wide versions, manned and cargo ), then the 2nd stage for the -246

MartG

Original Poster:

22,314 posts

226 months

Tuesday 8th February 2011
quotequote all
Well I've finally finished the resin 1/144 Jupiter-130 model, with alternative payloads too.

Cargo version


Manned version


Disassembled



More pics on my website at http://homepages.tesco.net/martin.goldsack/144.htm

Edited by MartG on Tuesday 8th February 13:51

dr_gn

16,718 posts

206 months

Wednesday 9th February 2011
quotequote all
Nice work - I'm very impressed by the fact that you make your own parts.

What do your resin moulds look like: are they split solid moulds or rubber?

I'm using some aftermarket resin at the moment, and some of the tiny detail appears to have undercut surface features which would appear to be difficult or impossible to release from a conventional solid mould (unless it was multi-part). I can't believe it would be a multi-part mould judging by the 'head' blocks and the overall size of the parts.

Cheers.

MartG

Original Poster:

22,314 posts

226 months

Wednesday 9th February 2011
quotequote all
All the moulds are one piece RTV silicone

MartG

Original Poster:

22,314 posts

226 months

Friday 18th February 2011
quotequote all
I've now finished the Jupiter-246 two stage version



Next to an Airfix Saturn V to show the relative size


Disassembled

perdu

4,885 posts

221 months

Friday 18th February 2011
quotequote all
This is very impressive modelling, I like it mucho

doc, when I used to mould me own with RTV moulds I found undercuts were fairly "easy" to allow for, but making a couple of PT6A engines was nothing like as impressive as this work

knock out stuff