Xenon ion propulsion systems are being developed by NASA Lewis Research Center and the Jet Propulsion Laboratory to provide flight qualification and validation for planetary and earth-orbital missions. In the ground-test element of this program, light-weight (less than 7 kg), 30 cm diameter ion thrusters have been fabricated, and preliminary design verification tests have been conducted. At 2.3 kW, the thrust, specific impulse, and efficiency were 91 mN, 3300 s, and 0.65, respectively. An engineering model thruster is now undergoing a 2000 h wear-test. A breadboard power processor is being developed to operate from an 80 V to 120 V power bus with inverter switching frequencies of 50 kHz. The power processor design is a pathfinder and uses only three power supplies. The projected specific mass of a flight unit is about 5 kg/kW with an efficiency of 0.92 at the full-power of 2.5 kW. Preliminary integration tests of the neutralizer power supply and the ion thruster have been completed. Fabrication and test of the discharge and beam/accelerator power stages are underway.


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    Titel :

    Development Status of the NASA 30-cm Ion Thruster and Power Processor


    Beteiligte:
    J. S. Sovey (Autor:in) / T. W. Haag (Autor:in) / J. A. Hamley (Autor:in) / M. A. Mantenieks (Autor:in) / M. J. Patterson (Autor:in)

    Erscheinungsdatum :

    1994


    Format / Umfang :

    10 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Development Status of the NASA 30-CM Ion Thruster and Power Processor

    Sovey, J. / Haag, T. / Hamley, J. et al. | British Library Conference Proceedings | 1994


    Development Status of the NASA 30-cm Ion Thruster and Power Processor

    Sovey, James S. / Haag, Thomas W. / Hamley, John A. et al. | NTRS | 1994



    NASA 30 cm Ion Thruster Development Status

    Patterson, M. / Haag, T. / Rawlin, V. et al. | British Library Conference Proceedings | 1994


    NASA 30 cm Ion Thruster Development Status

    M. J. Patterson / T. W. Haag / V. K. Rawlin et al. | NTIS | 1995