Overview of Russian EP Activities

Kim, Vladimir; Popov, G.A.; Tverdokhlebov, Sergey; Semenkin, Alexander; Garkusha, V. I.; Murashko, V.; Koryakin, A.; Nyatin, Arkadii; Romashko, A.; Yermoshkin, Yuri; Petrusevich, V.; Gorshkov, O. A.; Koroteyev, Anatolii

doi:10.2514/6.2002-3562

Cited by 2 publications

(1 citation statement)

References 6 publications

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“…9 To date, approximately 200 SPT-100s have flown, with reports indicating nominal performance in orbit. [9][10][11][12][13] The SPT-100 was qualified for flight on Western spacecraft through testing in the 1990s at Fakel, [14][15][16] at the NASA Glenn Research Center, 17 and at the Jet Propulsion Laboratory. 18 Between them, they covered vacuum facility background pressures ranging from 4.3×10 -4 to 7.5×10 -3 Pa (3.2×10 -6 to 5.6×10 -5 Torr), however it is not clear that trends in thruster performance as a function of background pressure can be reliably established from those tests since the same thruster and cathode flow fraction were not used in all cases.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Background Pressure on SPT-100 Hall Thruster Performance

Diamant¹,

Liang²,

Corey³

2014

50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference

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A flight-model SPT-100 Hall thruster from the Fakel Experimental and Design Bureau was characterized with respect to performance and plume properties at The Aerospace Corporation and at L-3 Electron Technologies, Inc. over vacuum facility background pressures ranging from 2.3×10 -4 to 9.5×10 -3 Pa (1.7×10 -6 to 7.1×10 -5 Torr). Thrust and xenon mass flow rate measured at both facilities agreed to within the measurement uncertainties. Thrust decayed exponentially, while flow rate increased linearly with decreasing pressure. Using simple curve-fits for extrapolation, thrust, specific impulse, efficiency, and flow rate were projected to change by -4, -10, -14, and 7% respectively at zero pressure relative to 6.7×10 -3 Pa (5.0×10 -5 Torr). A decrease in net ion accelerating voltage and an increase in plume divergence were identified as contributors to decreased thrust with decreasing pressure. The amplitude of discharge current oscillations decreased linearly with decreasing background pressure, while the center frequency of the oscillations also decreased, from 26 to 16.5 kHz, but in non-linear fashion. Neutral density near the exit plane of Hall thrusters can be quite low, O(10 18 ) m -3 , such that background neutrals from the residual gas in the vacuum chamber may significantly influence ionization and conduction there.

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Section: Introductionmentioning

confidence: 99%

The Effect of Background Pressure on SPT-100 Hall Thruster Performance

Diamant¹,

Liang²,

Corey³

2014

50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference

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Overview of Electric Propulsion Activities in Russia

Tverdokhlebov¹,

Semenkin²,

Garkusha³

et al. 2004

40th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit

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The paper provides a review of major activities in the Russian industry and research organizations in a field of research, development and application of Electric Propulsion. Leading spacecraft manufacturers in Russia-NPO PM (Krasnoyarsk), Rocket Corporation "Energiya" (Korolev city), Khrunichev Space Center (Moscow), VNIIEM (Moscow) continue successful EP application on GEO and LEO spacecrafts. Design Bureau "Arsenal" (Saint Petersburg) and NPO Mash (Reutov city) plan to use EP on their satellites. Growing EP application generates new requirements to the parameters of the propulsion systems and stimulates development and research activity at EDB "Fakel", RIAME, TsNIIMASH, MIREA, Keldysh Research Center. For Hall thrusters the main directions of these activities are to expand operation range in regard to specific impulse, thrust and power. Several thruster schemes are under evaluation-one stage SPT and TAL, two stages SPT and TAL. For low power propulsion systems PPT and low power Hall systems are under consideration. EP application is supported by permanently improving computer modeling necessary for calculation of different plasma effects accompanying EP operation onboard of a spacecraft (SC). Space experiments on the International Space Station are undergoing in support of verification and improvement of the computer codes and physical models.

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Overview of Russian EP Activities

Cited by 2 publications

References 6 publications

The Effect of Background Pressure on SPT-100 Hall Thruster Performance

The Effect of Background Pressure on SPT-100 Hall Thruster Performance

Overview of Electric Propulsion Activities in Russia

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