Jump to content

Blue Origin thread.


Vanamonde

Recommended Posts

3 minutes ago, mikegarrison said:

According to the article, the former STENA ship will be used to "transport rocket components". Considering it is a freighter, that would be understandable. I saw nothing there about being used as a landing platform. Where did that come from?

The NG production facility is at the Cape. There is no need to transport rocket components on a ship. Assuming ULA selects Be-4, the engine production is in Alabama, but those easily fit on trucks.

The rocket transportation is likely because landing platform isn't already something in existing licensing I would bet. It WILL transport rocket components back to FL. From the Atlantic.

Also it looks sorta like what they were imagining (forward bridge, anyway):

blue-origin-drone-ship.jpg?itok=6pSrc6Yj

 

Link to comment
Share on other sites

1 hour ago, CatastrophicFailure said:

It shall be interesting to see how things play out with BO supplying such a critical component to their biggest competitor. 

Pretty routine in the defense contracting world to collaborate with competitors. I mean, that's what ULA *is*. Boeing and Lockheed Martin collaborating on a business project.

Link to comment
Share on other sites

Some cool work on trying to estimate the BE-4 performance :

https://forum.nasaspaceflight.com/index.php?topic=45518.0

They are clustering around 312s - 345s for the isp based on the geometry, cycle, pressure and thrust. 

This estimate puts it just over RD-180 series performance at 311-337s.

The TWR is a mystery. It is a massive powerhead.

I figure it may be somewhere near 80:1 like the RD-180.

Maybe more since the chamber pressure is so low 13.4MPa vrs 26.7MPa on the russian engine.

Less metal needed around the chamber.

If so, the 240t thrust engine would have a mass of about 3t.

Link to comment
Share on other sites

56 minutes ago, insert_name said:

Doesn't arriane space get more payloads considering arriane 5 carries two payloads most of the time?

In 2017, there were 18 SpaceX launches.

Arianespace launched 6, all Ariane 5.

 

SpaceX launched 55 sats.

Ariane 5 launched 17 sats.

Link to comment
Share on other sites

  • 2 weeks later...
On 9/26/2018 at 11:28 AM, mikegarrison said:

According to the shipping article, the former STENA ship will be used to "transport rocket components". Considering it is a freighter, that would be understandable. I saw nothing there about being used as a landing platform. But the other article said it would be the landing platform. Where did that info come from?

[Additional info: on Burghardt's twitter he later said, "we don't have an official confirmation that Stena Freighter will be the recovery ship."]

 

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...