Quote from: Silmfeanor on 10/18/2012 10:21 pmhttps://twitter.com/Astro_Suni/status/258628475722809344QuoteOn unloading #Dragon, we found a very thoughful and timely gift from our friends @SpaceX - fall apples! http://twitpic.com/b5164yJim will have a field day over this one.Love the picture. That other 'unlisted' gift shows in the back.
https://twitter.com/Astro_Suni/status/258628475722809344QuoteOn unloading #Dragon, we found a very thoughful and timely gift from our friends @SpaceX - fall apples! http://twitpic.com/b5164y
On unloading #Dragon, we found a very thoughful and timely gift from our friends @SpaceX - fall apples! http://twitpic.com/b5164y
Would have been fired for doing something like that. I wonder if behind the scenes, there are some discussions going on.
Quote from: Jim on 10/19/2012 11:09 amWould have been fired for doing something like that. I wonder if behind the scenes, there are some discussions going on. You know, the simplest explanation is that all of these additions were cleared with the Astronaut Office in advance -- but the crew just weren't told that they were on board.
Quote from: peter-b on 10/19/2012 11:16 amQuote from: Jim on 10/19/2012 11:09 amWould have been fired for doing something like that. I wonder if behind the scenes, there are some discussions going on. You know, the simplest explanation is that all of these additions were cleared with the Astronaut Office in advance -- but the crew just weren't told that they were on board.It wouldn't be the Astronaut Office that one would have to ask for permission or forgiveness.
Quote from: psloss on 10/19/2012 11:20 amQuote from: peter-b on 10/19/2012 11:16 amQuote from: Jim on 10/19/2012 11:09 amWould have been fired for doing something like that. I wonder if behind the scenes, there are some discussions going on. You know, the simplest explanation is that all of these additions were cleared with the Astronaut Office in advance -- but the crew just weren't told that they were on board.It wouldn't be the Astronaut Office that one would have to ask for permission or forgiveness.You know what I mean.
Quote from: woods170 on 10/19/2012 07:09 amQuote from: Silmfeanor on 10/18/2012 10:21 pmhttps://twitter.com/Astro_Suni/status/258628475722809344QuoteOn unloading #Dragon, we found a very thoughful and timely gift from our friends @SpaceX - fall apples! http://twitpic.com/b5164yJim will have a field day over this one.Love the picture. That other 'unlisted' gift shows in the back.Would have been fired for doing something like that. I wonder if behind the scenes, there are some discussions going on.
You know, the simplest explanation is that all of these additions were cleared with the Astronaut Office in advance -- but the crew just weren't told that they were on board.
Quote from: Jim on 10/19/2012 11:09 amQuote from: woods170 on 10/19/2012 07:09 amQuote from: Silmfeanor on 10/18/2012 10:21 pmhttps://twitter.com/Astro_Suni/status/258628475722809344QuoteOn unloading #Dragon, we found a very thoughful and timely gift from our friends @SpaceX - fall apples! http://twitpic.com/b5164yJim will have a field day over this one.Love the picture. That other 'unlisted' gift shows in the back.Would have been fired for doing something like that. I wonder if behind the scenes, there are some discussions going on. Guess I’ve come to more of an understanding; putting myself in Jim’s shoes so to speak.What we are seeing are “signs” the program is going out of control. Signs that the SpaceX crew thinks they are NASA, and not a contractor.In SpaceX culture, this could get ugly.
Massive dump of hi res images from CRS-1 being uploaded in L2! (The set NASA didn't publish, like with the C2+ dump!)
Quote from: AndyX on 10/19/2012 07:05 pmMassive dump of hi res images from CRS-1 being uploaded in L2! (The set NASA didn't publish, like with the C2+ dump!)My posts seem to keep getting deleted.I'm still new to these forums, can you be more specific? What is L2?
Used some of those photos (I think we're over 300, at 3Mb or so each!) in the article I've just put on:Dragon enjoying ISS stay, despite minor issues – Falcon 9 investigation begins:http://www.nasaspaceflight.com/2012/10/dragon-iss-stay-minor-issues-falcon-9-investigation/
The article mentions the extensive testing done on the Merlin 1C. I'm curious if they've ever had a Fuel Dome problem in any of those tests? If so, will that make nailing down what happened simpler & not delaying the upcoming CRS-2?
Then there is the question of dealing with the comparatively rare case of a chamber rupture. To protect against this, Falcon 9 will have a blast shield protecting the entire base of the vehicle just above the gimbal joints of the engines. In addition, there will be fireproofed Kevlar fragment containment around each engine, similar to those present in jet engine nacelles. The explosive power of a liquid rocket chamber is actually not exceptionally high – it can be thought of as simply a small pressure vessel containing (in our case) 800 psi hot gas. During the development of Merlin, we saw several of what we refer to as RUD (rapid unscheduled disassembly) events and no fragments have ever penetrated more than 2mm of aluminum. Also, the direction of fragments is in a shallow downward cone away from the vehicle.As additional measures of protection, all propellant and pneumatic lines have either pre-valves or check valves nested up high in the thrust structure. If anything happens to the engine, the flight computer is able to cut off all propellant and pressurant flow immediately.Given all of the above, I really believe we have a stage that has considerably higher propulsion reliability than a single engine vehicle.
A SpaceX update page from 2005 mentions that during Merlin development the company had witnessed a number of RUD events. (Rapid Unscheduled Disassembly). The update specifically mentions a chamber rupture, so, it seems likely that SpaceX has witnessed a similar event before during Merlin testing.