Cesium fueled mpd arc jet engine performance

Bennett, S. C.; Enos, G.; John, Richard R.; Tuchman, A. K.

doi:10.2514/6.1965-296

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1966

1967

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“…[4][5][6]. It should be emphasized that the thrust increases with tank pressure by a factor of 2, whereas the tank pressure varies by a factor of 100.…”

Section: Measurements and Discussionmentioning

confidence: 99%

Diagnostic studies in a Hall accelerator at low exhaust pressure.

et al. 1966

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Thrust measurements have indicated that the coaxial Hall current accelerator can produce directed ion energies higher than the energy of an ion falling through the arc voltage. Measurements of thrust are made at tank pressures from 10 -1 to 10 ~4 Torr and at mass flows of 0.03 to zero grams per second of argon. It is found that at high tank pressure and low mass flow the measurements are affected by gas en trainmen t. At extremely low mass flow electrode material is eroded into the discharge. For some conditions where slight excess energies are measured the thrust measurements may give accurate velocities. Langmuir probe measurements also indicated that there may be a slight excess energy for some operating conditions. Hall current, floating potential, and Langmuir probe velocity measurements indicate that acceleration occurs close to the electrodes.

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“…[4][5][6]. It should be emphasized that the thrust increases with tank pressure by a factor of 2, whereas the tank pressure varies by a factor of 100.…”

Section: Measurements and Discussionmentioning

confidence: 99%