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Electrolysis Spacecraft Propulsion Applications

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Electrolysis Spacecraft Propulsion Applications ( electrolysis-spacecraft-propulsion-applications )

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Legend: Figure 4: I:_ _F Electrolysis Solenoid Valve Relief Valve Check Valve Flow Venturi Propulsion System l-_ Schematic Thermocouple Particle Filter NASA TM-113157 13 2.1 2.0 1.9 1.8 ••O • • ••m 2.1 2.0 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.4 3000 1.7 " 1.6 1.5 1.4 ' _ , " " • EC @ 344 mA/cm2 • EC @ 258 mA/cm2 - EC @ 172 mA/cm2 _ EC @ 86 mA/cm2 Active Area 46 cm2 Nation 117, E-5TM catalyst Inlet Temperature 322 K 0.38 MPa H2 / H20 Vapor 0.45 MPa 02 / H20 Vapor 300 =me FC 0108 mA/cm2 300 sec EC @258 mA/cm2 1.3 1.2 1.1 1.0 0,9IIII I JFC@ 43mA/cm2 " FC @ 172 mAJcm2 " FC @ 237 mA/cm2 0.8 eO• • • • " Water Breadboard __ Io Lxisting Regulated Nitrogen Purge Supply Hydrogen '' _ ' ' ' : 1500 2000 : 2500 , [] ' • °FC@108mA/cm2 -_'_ D 0 &AA _ A ii1|Ii 500 Figure 3: Measured Performance as a Function of Cycle Number for a Single Cell URFC 0.7 0.6 0.5 0.4 0 D A ' _ .... 1000 [] I olysis Tank High temperature Oxidation Resistant 1.0 N Thruster Cycle Number (600 sec ! cycle) /m Ton_ Propellant Tank Pressure Transducer

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