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  2. RS-25 - Wikipedia

    en.wikipedia.org/wiki/RS-25

    The RS-25 engine consists of pumps, valves, and other components working in concert to produce thrust. Fuel (liquid hydrogen) and oxidizer (liquid oxygen) from the Space Shuttle's external tank entered the orbiter at the umbilical disconnect valves and from there flowed through the orbiter's main propulsion system (MPS) feed lines; whereas in the Space Launch System (SLS), fuel and oxidizer ...

  3. Staged combustion cycle - Wikipedia

    en.wikipedia.org/wiki/Staged_combustion_cycle

    The RS-25 Space Shuttle main engine is another example of a staged combustion engine, and the first to use liquid oxygen and liquid hydrogen. [4] Its counterpart in the Soviet shuttle was the RD-0120 , which had similar specific impulse , thrust, and chamber pressure, but with some differences that reduced complexity and cost at the expense of ...

  4. Space Launch System core stage - Wikipedia

    en.wikipedia.org/wiki/Space_Launch_System_core_stage

    Propelled by 4 RS-25 engines, the stage generates approximately 7.44 MN (1,670,000 lb f) of thrust, about 25% of the Space Launch System's thrust at liftoff, for approximately 500 seconds, propelling the stage alone for the last 375 seconds of flight. The stage lifts the rocket to an altitude of approximately 162 km (531,380 ft) before ...

  5. Space Shuttle external tank - Wikipedia

    en.wikipedia.org/wiki/Space_Shuttle_external_tank

    The core stage of the rocket is 8.4 meters (28 ft) in diameter and mount a Main Propulsion System (MPS) incorporating four RS-25 engines. [23] [24] The core stage is structurally similar to the Space Shuttle external tank, [25] [26] and initial flights will use modified RS-25D engines left over from the Space Shuttle program. [27]

  6. RS-232 - Wikipedia

    en.wikipedia.org/wiki/RS-232

    Presence of a 25-pin D-sub connector does not necessarily indicate an RS-232-C compliant interface. For example, on the original IBM PC, a male D-sub was an RS-232-C DTE port (with a non-standard current loop interface on reserved pins), but the female D-sub connector on the same PC model was used for the parallel "Centronics" printer port ...

  7. Musk and Ramaswamy won't be paid to lead new Department of ...

    www.aol.com/musk-ramaswamy-wont-paid-lead...

    Of three posts made, as of Thursday afternoon, the most recent requested "super high-IQ-small-government revolutionaries willing to work 80+ hours per week" to apply for a role in DOGE. "DM this ...

  8. Comparison of orbital rocket engines - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_orbital...

    Engine Origin Designer Vehicle Use Propellant Power cycle Specific impulse (s) [a] Thrust (N) [a] Chamber pressure (bar) Mass (kg) Thrust: weight ratio [e] Oxidiser: fuel ratio ...

  9. Dying To Be Free - The Huffington Post

    projects.huffingtonpost.com/dying-to-be-free...

    To enter the drug treatment system, such as it is, requires a leap of faith. The system operates largely unmoved by the findings of medical science. Peer-reviewed data and evidence-based practices do not govern how rehabilitation facilities work. There are very few reassuring medical degrees adorning their walls.