...And a link should you wish to read more: http://guest.warr.de/Archiv/Konferenzen/EUCASS_2013_Papers/full/p596.pdf...
Someone posted this on /r/BlueOrigin under the subject "New Commemorative Patch", hopefully this means we'll have some good news about BE-4 soon.
Quote from: spacenut on 08/28/2017 12:46 pmDoes anyone know a timeframe for another test?When it was announced in 2014, full scale testing was expected in 2016 and first flight in 2019. I suppose one must add one year to each number at this point. We're getting close to needing to add two years. When was AR-1 supposed to be ready again? - Ed Kyle
Does anyone know a timeframe for another test?
on the lower right, there are 9 lines.does the fact that the 2nd line is red signify that they are working on the 2nd step in a 9 step master plan?
Quote from: coal_burner on 08/28/2017 12:31 pmon the lower right, there are 9 lines.does the fact that the 2nd line is red signify that they are working on the 2nd step in a 9 step master plan?9 lines, 1 of them red.8 stars, none of them red.Perhaps representing the number of test milestones (engines) and their major Oops?(Terraserver imagery is from ~1 week before the oops, and nothing since. Frustrating)
From what I understand, the first test of BE-4 failed. The sub-scale test of Raptor was a success. The first sub-scale test of AR-1 was a success. Is this correct? If so, seems as if BE-4 is falling behind.
Make no mistake - proving a powerpack to an engine of this scale is hard - note the F-1B powerpack test that was done a few years back. But then you typically attach an injector/combustion chamber next, in order to validate operation in start up / shut down / "burp". So it's hard to believe they were just testing the powerpack again.This work is very tedious and often "goes backward". Redesign/rebuild/reprove/retest. With ORSC, you could end up in a "free fall" for a while, until things start working once again. Likely here.
so raptor is a FFSC. Full Flow Staged Combustion and therefore one half of it is ORSC Oxygen Rich Staged Combustion. So Spacex has the same problems as Blue?