Liquid Rocket Engines (J-2X, RS-25, general)

J-2X rocket engine
Here is the list of entries for Liquid Rocket Engines (J-2X, RS-25, general) based on the selected criteria.

LEO Progress: RS-25 Adaptation May 29, 2013 12:24:14 PM | William D. Greene
 
As the title suggests, for this article we're going to talk about "adaptation," specifically about adaptation of the RS-25 engine.
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Inside The J-2X Doghouse: Performance Measurement, Part 2 of 2 Oct 16, 2012 08:34:54 AM | William D. Greene
 
How do you measure "push," or in other words, force? The simple answer can be found through one of the most frightening household appliances any of us own: The dreaded bathroom scale…
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Inside The J-2X Doghouse: Beyond the Gas Generator Cycle Aug 08, 2012 10:01:42 AM | William D. Greene
 
Okay, I admit it: I'm a sucker for the Olympics. I watch with rapt attention to sporting events that I would otherwise never consider viewing other than under the once-every-four-years heading of the Olympics. Why is that?
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Welcome to the J-2X Doghouse: All a Matter of Balance -- and Power May 15, 2012 09:41:34 AM | William D. Greene
 
One of the most important analytical tools used in development of a rocket engine is called a "power balance."
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Welcome to the J-2X Doghouse: Old Dogs, New Tricks Mar 27, 2012 07:50:37 AM | William D. Greene
 
Considering the many brilliant and knowledgeable people with whom I have the privilege of working here at NASA, I've come to accept the conclusion that there is a lot more stuff to know than can ever be learned.
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J-2X Progress: Getting All Spun Up Feb 21, 2012 02:49:35 PM | William D. Greene
 
Testing at night is always so much more dramatic.
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J-2X Progress: The Next Phase for E10001 Feb 03, 2012 11:27:13 AM | William D. Greene
 
Things move on. The same is true for J-2X. Last year was momentous for our project but now things move on and the life of our good friend E10001 enters its next phase.
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J-2X Progress: A New Star on Our Horizon Dec 12, 2011 11:10:13 AM | William D. Greene
 
For weeks and weeks (or months and months really), we've been going on and on about the star of our J-2X project, development engine E10001. So, E10001 is unquestionably a star. Beyond this, however, we have other potential stars waiting in the wings. I would liken this situation to "American Idol" except that I've never actually seen that show and, further, all of our test articles are not in competition with each other.
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Welcome to the J-2X Doghouse: You Dropped a Bomb on Me, Baby! Dec 01, 2011 03:41:07 PM | William D. Greene
 
The next J-2X Engine 10001 will be a bomb test. You read that correctly: Bomb Test.
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J-2X Progress: Mission-Duration Test Nov 18, 2011 03:27:35 PM | William D. Greene
 
Five hundred seconds is exactly eight minutes and twenty seconds. That seems like a really long time when you're counting every second.
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J-2X Extras: Here Comes the Bride -- Vehicle Integration Nov 03, 2011 04:29:18 PM | William D. Greene
 
I just got back a few days ago after a long weekend in Philadelphia where my wife's niece got married. In the midst of all these festivities, an analogy came to mind regarding J-2X -- well okay, perhaps not truly in the midst of the festivities, but certainly as part of the next-day hangover.
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Inside The J-2X Doghouse: A2J006 &Turbopump Thrust Balance Oct 12, 2011 11:39:11 AM | William D. Greene
 
What is "thrust balance?"
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J-2X Progress: Engine 10001 Testing Status Oct 12, 2011 11:38:33 AM | William D. Greene
 
When last I discussed with y'all the status of testing on the first J-2X development engine, I showed you a video of our first mainstage test. That was just over a month ago. So, what's been happening since then?
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Inside The J-2X Doghouse: Engine Control -- Open versus Closed Loop Aug 24, 2011 02:59:30 PM | William D. Greene
 
As I was driving to work this morning, I came up over a rise and saw suddenly appear in my windshield, over towards the left on the other side of the road, a police cruiser with a radar gun mounted in the window.
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J-2X Doghouse: Okay, So We Ain't That Smart -- Yet Aug 01, 2011 02:21:02 PM | William D. Greene
 
Welcome back to the J-2X Doghouse. We ain't as smart as we thought were. Why?
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J-2X Progress: Pardon Me Jul 21, 2011 03:31:32 PM | William D. Greene
 
That's one heck of a burp.
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J-2X Progress: The Burp Test Jul 07, 2011 11:05:06 AM | William D. Greene
 
I give to you the J-2X Burp Test. No, that is of course not the official name. The official name is the "J-2X Ignition Test" or, even more formally: Test A2J001. That really rolls off the tongue doesn't it?
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J-2X Extra: The Rocket Engine Development Life Cycle Jun 20, 2011 04:25:26 PM | William D. Greene
 
Everyone has in their personal histories certain events that they can look back on and say, "That's where things changed for me." Everyone has a history, a story. It is the narrative of how we come to be who we are. Believe it or not, rocket engines also have a life story of how they come to be.
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J-2X Progress: Road Trip, Baby! Jun 13, 2011 10:52:29 AM | William D. Greene
 
It wasn't too many years ago that there was this thing about asking sports heroes after winning the big game, "So, what’s next?" They would always dutifully answer "I'm going to Disney World!" I guess that that whole thing is passé since I've not heard it in awhile, so I am going offer an alternative. Maybe it'll catch on and be the BIG THING this summer…
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J-2X Progress: Engine Assembly Complete Jun 06, 2011 05:21:20 PM | William D. Greene
 
Just by chance, did you happen to see the title for this article? We’ve all been working a long time to get to hoot and howl a bit about this. Wahoo! We are now officially into the next phase for J-2X development engine E10001.
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J-2X Extra Rocket Alchemy: How Paper Becomes Precious Metal May 10, 2011 02:51:06 PM | William D. Greene
 
Alchemy isn’t practiced much these days. That's a shame. But there is little doubt in my mind that alchemy is exactly what is going on behind the scenes, deep within the dungeons of NASA as we develop a rocket engine.
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J-2X Progress: Engine Assembly, Volume 4 Apr 19, 2011 03:54:41 PM | William D. Greene
 
It's been about three weeks since I last reported on the progress of J-2X Engine 10001 assembly. For the last few weeks the engineers and technicians have been diligently plugging away at smaller stuff, at the details. Details, details, details!
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J-2X Extra: Supplier Appreciation Apr 11, 2011 05:12:11 PM | William D. Greene
 
Pssssssst. Come over here. Yes, you. Come on. Right here. Lean in real close because I’ve got a secret to share. A little closer. Are you ready? Okay, here it is...
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J-2X Progress: Engine Assembly, Volume 3 Mar 28, 2011 04:47:34 PM | William D. Greene
 
Assembly of J-2X development Engine 10001 “officially” commenced on Monday 21 February of this year, just about a month ago. Here is the engine today. Awwwww, our little baby is growing up so fast!
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J-2X Progress: Engine Assembly Continues Mar 16, 2011 04:15:49 PM | William D. Greene
 
So, where does the engine assembly stand? I don’t know about you, but this is getting darn exciting for me.
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J-2X Extra: The Faces Behind J-2X, NASA MSFC, Part 2 Mar 08, 2011 03:19:58 PM | William D. Greene
 
There are literally hundreds of people behind the J-2X development effort and they span the country. Let me introduce you to much of the next tier of our motley - yet talented - management crew, namely the subsystem managers here on the NASA side.
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J-2X Progress: Engine Assembly Starts! Feb 28, 2011 10:43:24 AM | William D. Greene
 
Ready…Set…Go!!! We have finally begun assembling the very first J-2X, Engine 10001.
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J-2X Extra: Shiny Metal Pieces Feb 16, 2011 10:54:42 AM | William D. Greene
 
“Finally, it's been discovered! Rocket engineers CAN have a sense of humor! Oh, and they love shiny things...”
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J-2X Progress: Test Stands Moving Towards Readiness Feb 11, 2011 09:57:04 AM | William D. Greene
 
In previous articles you've seen overview articles about Stennis and the test stands. For this article, I'm going to provide an update and show off some neato pictures of the ongoing work.
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