Did anyone ever post the value of Bulk Density for the Merlin D? It seems a little tricky to estimate due to the various densities given for RP-1.
OK, that helps. Now, do we know what the RP-1/LOX ratio is?
Quote from: aero on 07/04/2012 05:53 pmOK, that helps. Now, do we know what the RP-1/LOX ratio is?I have not found any numbers for 1D but there are clues about 1C in here.From the LOX and RP-1 tank capacities mentioned on page A-3, 15586 kg and 7159 kg, the O/F ratio should be about 2.21For Merlin 1D it might be a different though.
Not sure if anyone noticed but this can be viewed in 3d
I just noticed something interesting near the bottom of the second page in this article on smallsats:http://www.aviationweek.com/Article.aspx?id=/article-xml/AW_08_20_2012_p31-486488.xml"To produce the motors, CRP uses a computer-aided design (CAD) file containing the motor's shape, and electronically divides it into layers for the 3-D printing. Space Exploration Technologies Corp. (SpaceX) uses the same technique to manufacture tiny impellers and other parts for its Merlin rocket engines from titanium powder, according to a SpaceX spokesman."[Emphasis mine.]I don't recall hearing before that SpaceX was using 3-D printing in their engine manufacturing. Is anybody else doing this? It sounds pretty bleeding edge. Could they really be manufacturing turbopump impeller blades that way? The required tolerances are awfully fine.
I don't recall hearing before that SpaceX was using 3-D printing in their engine manufacturing....Could they really be manufacturing turbopump impeller blades that way?
First picture of the Merlin 1D-Vac:https://twitter.com/elonmusk/status/252528724602400768QuoteElon Musk @elonmuskNow test firing our most advanced engine, the Merlin 1D-Vac, at 80 tons of thrust. pic.twitter.com/HGK1joVQ
Elon Musk @elonmuskNow test firing our most advanced engine, the Merlin 1D-Vac, at 80 tons of thrust. pic.twitter.com/HGK1joVQ
Copied from the "general" thread:-Quote from: Lars_J on 09/30/2012 10:10 pmFirst picture of the Merlin 1D-Vac:https://twitter.com/elonmusk/status/252528724602400768QuoteElon Musk @elonmuskNow test firing our most advanced engine, the Merlin 1D-Vac, at 80 tons of thrust. pic.twitter.com/HGK1joVQDoes this match the expected thrust for M1D vac?cheers, Martin
Quote from: MP99 on 09/30/2012 10:47 pmCopied from the "general" thread:-Quote from: Lars_J on 09/30/2012 10:10 pmFirst picture of the Merlin 1D-Vac:https://twitter.com/elonmusk/status/252528724602400768QuoteElon Musk @elonmuskNow test firing our most advanced engine, the Merlin 1D-Vac, at 80 tons of thrust. pic.twitter.com/HGK1joVQDoes this match the expected thrust for M1D vac?cheers, MartinFrom SpaceX website Merlin Engine(presumably M-1D) Vacuum Thrust: 161,000 lbf