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Hi all, Windows XP automatic update has alerted me to the existence of SP3. The smaller updates I usually install without giving them too much thought, but this one seems to be quite substantial. Does anybody know of any issues with SP3, stability etc., which should prevent me from installing...

Hi! Looking at the Falcon 1 and Falcon 9 specs, I started wondering. They both have RP-1/LOX second stages, which are rated with relatively low Isp (less than 350s). Usually, a second stage ignites in the upper atmosphere and is supposed to bring the payload into orbit, or nearly so...

I've been reading up about the rocket equation in Wikipedia, and I have a set of questions. The first and more focused one: How would the rocket equation look like for a design where some of the stages overlap? For example, the space shuttle uses the SRBs and the SSMEs together and then only...

Hi, I downloaded Mercury Project 5.0 from Orbit Hangar. Didn't have a chance to actually fly it yet, but looks great judging by the manuals. It's from Jan 2005. This is quite a long time ago, so I'm wondering whether I'm missing something and there's a new version ? Thanks.

Hi all! New to this forum. Taking refuge here from the technical mayhem at M6. I'm wondering which addons to use for the Space Shuttle. I knew about Shuttle Fleet. Now what's the story with GPCMFD, AutoFCSm and MEDS (all avionics MFDs for the Shuttle if I understood correctly) ? And what's...