Talk:Raptor (rocket engine)

From Wikipedia, the free encyclopedia
Jump to: navigation, search
WikiProject Spaceflight (Rated Start-class, Mid-importance)
WikiProject icon This article is within the scope of WikiProject Spaceflight, a collaborative effort to improve the coverage of spaceflight on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.
Start-Class article Start  This article has been rated as Start-Class on the project's quality scale.
Checklist icon
 Mid  This article has been rated as Mid-importance on the project's importance scale.
 
WikiProject Rocketry  
WikiProject icon This article is within the scope of WikiProject Rocketry, a collaborative effort to improve the coverage of rocketry on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.
 ???  This article has not yet received a rating on the project's quality scale.
 ???  This article has not yet received a rating on the project's importance scale.
 

Raptor is an engine, not a rocket stage.[edit]

SpaceX's web site and presentations mention the raptor as a rocket engine, not a rocket stage.I suppose it could be both, though. Recommend this article be renamed Raptor (rocket engine). I see that there are web pages that mention it as being an upper stage, but these seem to be mistaken, and SpaceX's own web site would be a much more reliable source for what it actually is. --71.214.211.224 (talk) 15:13, 3 November 2010 (UTC)

That seems to be correct, it is an engine and not a rocket stage. Let's wait another week or two to see in anyone else wants to weigh in. If not, let's just rename the article per proposal by 71.214.211.224 above. N2e (talk) 05:43, 13 December 2010 (UTC)
I cant find mention of Raptor as an engine on SpaceX's web site can you give a link. If Raptor is the name of the engine then it would make sence to change the name but as Raptor would use diffent fuel to the merlin it would need a new stage which would proberly carry the same name so the stage should still be mentioned. 86.173.128.42 (talk) 01:10, 22 December 2010 (UTC)
I don't know of a source still available from the SpaceX website; SpaceX may have gone proprietary on some of their current advanced plans. The source in the article, from the AIAA Innovations in Orbit: An Exploration of Commercial Crew and Cargo Transportation conference held in June 2009, is the source I am familiar with, and where I first heard of the Raptor concept design. I'm glad the AIAA caught the talk on video. I have captured the quotation: "[SpaceX has] begun initial design of the Raptor LOX/Hydrogen upper stage, which dramatically increases payload performance."
But the important note to make is we still have no (zip, zilch, nada) source that indicates that "Raptor" is a rocket stage. We could speculate on the name for the stage, but this is Wikipedia so we can't, and should just go with what we have verifiable information for. So I think it is time to rename the article. Looking at other rocket engine articles, I would propose: Raptor (rocket engine). N2e (talk) 06:25, 22 December 2010 (UTC)

Cleanup[edit]

I've made a few edits to begin to cleanup the article, including requests for more up-to-date information on the formal status of this development(?) or conceptual(?) program. Much more is needed. N2e (talk) 05:48, 13 December 2010 (UTC)

Hydrogen?[edit]

According to Musk they are working on a Methane engine.--92.225.133.101 (talk) 22:58, 4 September 2012 (UTC)

Could be. But it is not clear that any Methane engine they might be working on is the Raptor, and therefore may not belong in this article. If you have a source, please edit the article and update it with the facts. Cheers. N2e (talk) 04:45, 5 September 2012 (UTC)
Yes check.svg Done. November talk by Elon Musk has confirmed that Raptor is now a Methane/LOX propellant engine. And another editor has started by adding that claim to the article. N2e (talk) 03:12, 22 November 2012 (UTC)

"MCT is not a engine. Raptor is the next engine."[edit]

Elon Musk, November 2012: "MCT is not a engine. Raptor is the next engine. More details to be revealed next year!".

Looks like this supports the discussion above, from 2010, and the article should be renamed. As well, this info will need to be reflected in the article body. Cheers. N2e (talk) 07:10, 21 November 2012 (UTC)

Here's a timelink to where in the video he says that quote.--Craigboy (talk) 08:35, 8 March 2013 (UTC)

more press on the same topic[edit]

Article move[edit]

Based on previous discussions on this Talk page since 2010, and now recent reliable sources confirming both that the SpaceX "Raptor" development project is an engine, not an upper stage—and that it will utiilize Methane/LOX as a propellant, not LH2/LOX—I am going to move the article to Raptor (rocket engine) from its existing article name Raptor (rocket stage). N2e (talk) 03:17, 22 November 2012 (UTC)

Yes check.svg Done N2e (talk) 15:29, 22 November 2012 (UTC)

Substantially more information released to the public, October 2013[edit]

In recent news releases, a good bit of new information has been publically released by SpaceX about the Raptor engine, and the whole methane-based Raptor concept objective (inner solar system travel and exploration and colonization of Mars). I have updated the article with several aspects of the new information: mostly technical specs, testing plans, and the launch vehicle objectives of the new methane powered rockets.

Having said that, there is more info in the Space News article, on the financials for the Mississippi test facility, and more, should other editors want to read it, and consider its use in the article. Cheers. N2e (talk) 02:26, 26 October 2013 (UTC)

I've got a possible citation for the Raptor specific impulse, if some guesswork is allowed[edit]

"I realized that a methane-oxygen rocket engine could achieve a specific impulse greater than 380." - Elon Musk

http://money.cnn.com/2013/11/21/leadership/steve-jobs-elon-musk.pr.fortune/index.html

NortySpock (talk) 19:19, 24 November 2013 (UTC)

I'd go ahead and add it to the article, as the current citation does not support the 380 claim at all. N2e (talk) 05:38, 26 November 2013 (UTC)

Liquid methane[edit]

Why not refer to liquid methane as LCH4 for short? The following paper does so: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20090004695.pdf — Preceding unsigned comment added by 89.77.157.164 (talk) 07:09, 13 June 2014 (UTC)