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Raptor, Cryogenic methane-fueled rocket engine

Discussion in 'SpaceX' started by HVM, Aug 9, 2016.

  1. HVM

    HVM Savolainen

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    #1 HVM, Aug 9, 2016
    Last edited: Aug 9, 2016
    WOW, SpaceX raptor program is advanced more, that I think before:

    C. G. Niederstrasser ‏@RocketScient1st

    "Shotwell - just shipped first Raptor engine to Texas last night. #SpaceX #smallsat"

    And Texas means here, the SpaceX Rocket Development and Test Facility in McGregor,

    Blah, Grendal ninjaposted me.
     
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  2. Grendal

    Grendal Active Member

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    Sorry about that.... :)
     
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  3. HVM

    HVM Savolainen

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    Raptor Specs:

    Cycle: Full-flow staged combustion
    Oxidizer: Subcooled liquid oxygen
    Fuel: Subcooled liquid methane
    Chamber Pressure: 300 bar
    Throttle Capability: 20% to 100% thrust

    Sea-Level Nozzle
    Expansion Ratio: 40
    Thrust (SL): 3,050 kN
    Isp (SL): 334 s

    Vacuum Nozzle
    Expansion Ratio: 200
    Thrust: 3,500 kN
    Isp: 382 s


    There should be two turbopumps and two pre-burners +turbines, can you find them?
    raptor.jpg
     
  4. siai47

    siai47 Member

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    I don't know anything about rocket engines---however a nice picture. Could the pumps be compound pumps? There appears to be one on the side and one of the top of the engine. The nozzle section looks more like the high bay lights in my shop---sure would be bright if lit up but would most likely clean out the shop before departing through the roof :) !
     
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  5. HVM

    HVM Savolainen

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    Nasaspaceflightcom's AP3 have same idea; guess for a flow diagram:
    Raptor_flow.jpg
    Where a LOX Pump, Turbine and the Preburners are integrated same blog as Combustion Chamber.
     
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