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

J-2X Progress: Two Stands Occupied Apr 24, 2012 02:12:49 PM | William D. Greene: It's been awhile since I've had the opportunity to update what we've been doing for the J-2X development test campaign. So, everyone is probably wondering where we stand.; › 4 Comments › Permalink

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.; › 7 Comments › Permalink

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?; › 11 Comments › Permalink

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.; › 12 Comments › Permalink

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?; › 7 Comments › Permalink

J-2X Progress: Pardon Me Jul 21, 2011 03:31:32 PM | William D. Greene: That's one heck of a burp.; › 4 Comments › Permalink

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?; › 5 Comments › Permalink

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.; › 5 Comments › Permalink

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…; › 9 Comments › Permalink

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.; › 4 Comments › Permalink

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!; › 8 Comments › Permalink

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!; › 3 Comments › Permalink

J-2X Doghouse: The Rocket Equation! Wahoo! Mar 21, 2011 10:34:04 AM | William D. Greene: In response to a couple of early requests on this blog, I’d like to talk about rocket engine performance characteristics and how they relate to successfully getting off the planet and into orbit. Because this comes down to a matter of equations – and therefore at least half of the reading audience will click on their Facebook icon as soon as they see any equations – let me start with an old joke...; › 12 Comments › Permalink

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.; › 13 Comments › Permalink

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.; › 7 Comments › Permalink

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...”; › 5 Comments › Permalink

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.; › 2 Comments › Permalink

J-2X Progress: Valves, Commands into Action Jan 25, 2011 11:54:43 AM | William D. Greene: Everyone seems to like analogies between the composition of a rocket engine and that of the human body --and in some cases, they work pretty well!; › 8 Comments › Permalink

J-2X Extra: The Faces Behind J-2X, NASA MSFC, Part 1 Jan 20, 2011 12:06:04 PM | William D. Greene: An introduction to just a few of the people -- out of hundreds -- responsible for making J-2X engine a reality.; › 6 Comments › Permalink

J-2X Progress: The Main Combustion Chamber -- the Heart of the Fire Jan 06, 2011 04:23:58 PM | William D. Greene: Containing combustion products at 6,000 degrees Fahrenheit and pressure over 1,300 pounds per square inch? Sounds like a job for an MCC!; › 4 Comments › Permalink

Inside The J-2X Doghouse: The Gas-Generator Cycle Engine Dec 15, 2010 10:51:58 AM | William D. Greene: How do you provide enough propellant to move something like, say, the Saturn V that was over 300 feet tall and weighing millions of pounds? That's where things get interesting.; › 12 Comments › Permalink

J-2X Extras: Rebuilding the Past Dec 01, 2010 10:50:54 AM | William D. Greene: Why didn't NASA just dust off the old J-2 engine instead of launching into the J-2X development effort? There's a moral to that story...; › 14 Comments › Permalink

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