There is a marked throttle up at 1:50 of the video timer and stays upthrottled until 7:20 which is a runtime of 5 mins 30 secs (330 seconds) at this elevated power level.
Quote from: Hog on 05/31/2015 05:29 amThere is a marked throttle up at 1:50 of the video timer and stays upthrottled until 7:20 which is a runtime of 5 mins 30 secs (330 seconds) at this elevated power level.The basics looked similar to Shuttle; the engine is throttled down from "full power" shortly after "liftoff" and then again to something like minimum power level at the end of the test to set up for shutdown.Maybe we'll get to see some detailed test objectives on L2 at some point in the development series.
Quote from: psloss on 05/31/2015 03:15 pmQuote from: Hog on 05/31/2015 05:29 amThere is a marked throttle up at 1:50 of the video timer and stays upthrottled until 7:20 which is a runtime of 5 mins 30 secs (330 seconds) at this elevated power level.The basics looked similar to Shuttle; the engine is throttled down from "full power" shortly after "liftoff" and then again to something like minimum power level at the end of the test to set up for shutdown.Maybe we'll get to see some detailed test objectives on L2 at some point in the development series.Actually, the engines was not at Rated Power Level (RPL) at lift-off (104.5%) but rather at 100%.
Do you mean the test will use the new controller?
http://www.nasaspaceflight.com/2015/08/sls-test-stennis-team-overview-rs25-ignition/Thanks for the great article Philip of which I like to refer to as "The music of the Shuttles"...
Test complete!Here's Philip's article to mark the series and preview the next - plus more on the turnaround of the engine between test six and seven. Top work by Philip with the access and quotes.http://www.nasaspaceflight.com/2015/08/rs-25-completes-test-series-next-engine/
Quote from: Chris Bergin on 08/27/2015 08:23 pmTest complete!Here's Philip's article to mark the series and preview the next - plus more on the turnaround of the engine between test six and seven. Top work by Philip with the access and quotes.http://www.nasaspaceflight.com/2015/08/rs-25-completes-test-series-next-engine/Very nice article!So we have DE-0525 which currently just finished its duty on the test stand for this current round of tests. DE-0525 will now be swapped out for the 2nd Development Engine-DE-0528 for another battery of tests for SLS usage. 16 Main Engines and 2 Development Engines for a total of 18 RS-25s in NASA's current inventory.Block II/RS25D Engines with flight experience (listed with last mission flown)1) 2044 STS-1332) 2045 STS-1353) 2047 STS-135 4) 2048 STS-1335) 2050 STS-1206) 2051 STS-1327) 2052 STS-132 2054 STS-1319) 2056 STS-12110) 2057 STS-13411) 2058 STS-13312) 2059 STS-13413) 2060 STS-13514) 2061 STS-134Unflown Block II/RS25D engines15) 2062 (circa 2010 build)16) 2063 (2015 build)Development Engines Block II/RS25D17) 052518) 0528According to the supplied excerpt from the 2000 Block III SSME Upgrades Project Overview which states that there are three-Block III Development Engines and two-Block III Certification Engines with a total of 154 starts and 60,000 seconds (16.6 hours)of hotfire runtime that were in existence at some time.001-Development Engine002-Development Engine003-Development Engine004-Certification Engine005-Certification EngineI wonder what became of these Block III RS-25 engines?Heres a link to the 2000 Block III SSME proposal for those who haven't seen it.http://archive.org/stream/nasa_techdoc_20000112952/20000112952#page/n0/mode/2upHopefully the next round of testing using DE-0528 goes as well as testing with DE-0525 did.
The press release does not indicate how many RS-25 engines will be manufactured under the $1.16 Billion dollar contract. Anyone know?