Go Back   IceInSpace > General Astronomy > Astronomy and Amateur Science

Reply
 
Thread Tools Rate Thread
  #1  
Old 21-10-2020, 09:34 PM
Startrek (Martin)
Registered User

Startrek is offline
 
Join Date: Dec 2017
Location: Sydney
Posts: 2,727
Space X SN8 static fire test successful

I don’t if anyone saw the static fire of SN8, but for a moment there I thought the whole launch vehicle blew up on the test stand, simply spectacular enormous amount of kinetic energy in a split second , but it went off perfectly
3 raptor engines fired momentarily with a total thrust of nearly 900,000 pounds using liquid oxygen and methane as propellant
Next exciting event for Starship will be the 15km flight , launch date to be confirmed
Space X achieving milestones month after month, an incredible progressive space company !!
Reply With Quote
  #2  
Old 21-10-2020, 10:14 PM
glend (Glen)
Registered User

glend is offline
 
Join Date: Jun 2013
Location: Lake Macquarie
Posts: 6,022
Yep I watched it live, and it is still on Utube at Labpadre's channel or the NASA Spaceflight channel. First time three Raptors have ignited at the same time, previous tests were just with one engine. Nose cone should be moved to the pad tomorrow for stacking with the tank section, which will be the first time we see the complete Starship structure. Nose cone winglets are already installed.
Reply With Quote
  #3  
Old 22-10-2020, 03:54 PM
glend (Glen)
Registered User

glend is offline
 
Join Date: Jun 2013
Location: Lake Macquarie
Posts: 6,022
Nose section was moved to the launch pad this morning our time, crane is on the pad for stacking the nose later tonight our time. They do not appear to use the crane at night, with visibility issues I suppose, when your stacking ship sections which weigh so much and must align precisely. It will be interesting to see how they complete the section welding, by hand or robotically (I have yet to see the robotic welder they use inside the assemble tent, used outside).
Reply With Quote
  #4  
Old 22-10-2020, 08:29 PM
Startrek (Martin)
Registered User

Startrek is offline
 
Join Date: Dec 2017
Location: Sydney
Posts: 2,727
Quote:
Originally Posted by glend View Post
Nose section was moved to the launch pad this morning our time, crane is on the pad for stacking the nose later tonight our time. They do not appear to use the crane at night, with visibility issues I suppose, when your stacking ship sections which weigh so much and must align precisely. It will be interesting to see how they complete the section welding, by hand or robotically (I have yet to see the robotic welder they use inside the assemble tent, used outside).
I’m amazed how the majority of Starship is assembled , joined , welded etc.. out in the open under the hot gulf sun , wind , dust and so on .....
During project Apollo, Stages 1, 2 , 3 , the IU , the escape tower , the service module , the command module and the lunar module were all manufactured in clean , sterile space factories around America , wrapped and sealed against the elements , brought to the Cape in special ships and the “Guppy” and assembled in the VAB which was an environmentally controlled clean atmosphere ( the biggest building on the planet at the time )
Maybe it’s because Apollo was a government funded project and Starship is a private funded project so money is tight ??
Any thoughts on the above observation
Reply With Quote
  #5  
Old 22-10-2020, 09:50 PM
glend (Glen)
Registered User

glend is offline
 
Join Date: Jun 2013
Location: Lake Macquarie
Posts: 6,022
Quote:
Originally Posted by Startrek View Post
I’m amazed how the majority of Starship is assembled , joined , welded etc.. out in the open under the hot gulf sun , wind , dust and so on .....
During project Apollo, Stages 1, 2 , 3 , the IU , the escape tower , the service module , the command module and the lunar module were all manufactured in clean , sterile space factories around America , wrapped and sealed against the elements , brought to the Cape in special ships and the “Guppy” and assembled in the VAB which was an environmentally controlled clean atmosphere ( the biggest building on the planet at the time )
Maybe it’s because Apollo was a government funded project and Starship is a private funded project so money is tight ??
Any thoughts on the above observation
I do not believe money is tight for Elon Musk, he is throwing heaps at Starship development. The NASA model had build facilities scattered all over the US to placate Congressional members who voted for funding, hence big over heads on transport and assembly. In relation to seemingly casual construction, I admit the Starship has a steam punk look about it, almost an HG Wells illustration. However, the ring segments are all robot welded on big machines to very close tolerances. They are stacked three or four high in segments, again done inside a tent fabrication building. The segments are then stacked inside the mid bay building, so not much really done in the open. You would have seen the steps the welders take to block the wind (and oxygen) from any work they do in the open, and they use Argon gas to shield the work. There are onsite welding inspectors and certification people, who do not work directly for SpaceX, but are contracted for quality control. I believe they xray the welds on every ring section. Some equipment, like the engines, the engine mount thrust puck assembly, the fuel down pipes, landing legs, etc are manufactured elsewhere, likely Hawthorne, California, and the engines come from the Texas plant, so some distribution of manufacturing.
It''s a different way if working, granted, but Musk has been very clear that this is rapid prototyping, and he does not expect a final design and production process until Starship SN20. Luckily SpaceX is a private company, with good cash flow coming from its reusable launch vehicles, to fund this development. Once Starship becomes operational the cost per lifted ton will drop yet again, putting further pressures on SpaceX commercial competitors. I don't think Musk worries about competition, only about staying ahead of them.

There is an interesting article here on SpaceX development of new welding processes:

https://www.tesmanian.com/blogs/tesm...pacex-machines

Last edited by glend; 22-10-2020 at 10:02 PM.
Reply With Quote
Reply

Bookmarks

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 08:16 AM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Advertisement
Testar
Advertisement
Limpet Controller
Advertisement
NexDome Observatories
Advertisement
Bintel
Advertisement
Astronomy and Electronics Centre
Advertisement