Electrohydrodynamic thruster for near-space applications

• Published in: Acta astronautica Vol. 180; pp. 141 - 148
• Main Authors: Khomich, V.Yu, Malanichev, V.E., Rebrov, I.E.
• Format: Journal Article
• Language: English
• Published: Elmsford Elsevier Ltd 01.03.2021; Elsevier BV
• Subjects: Altitude; Atmospheric pressure; Corona; Discharge; Effectiveness; Electroaerodynamic systems; Electrohydrodynamic thruster; Electrohydrodynamics; High voltage; Ionocraft; Lifter; Low pressure; Near-space; Positive corona; Space applications; Thrust; Vacuum chambers; Electroaerodynamic systems; Lifter; Effectiveness; Low pressure; Near-space; Electrohydrodynamic thruster; Ionocraft
• ISSN: 0094-5765; 1879-2030
• DOI: 10.1016/j.actaastro.2020.12.002

Studies of the lifting force of an electrohydrodynamic thruster based on a corona discharge in wire-to-cylinder geometry in a rarefied atmosphere have been carried out. Electrohydrodynamic cell parameters at three interelectrode gaps of 50, 100, and 150 mm and at pressures from 1 to 0.05 atm with positive corona discharge were investigated. The experimental system included a vacuum chamber, an EHD thruster, a high voltage power source (HVDC), and a thrust, voltage, and current acquisition system was created. The effectiveness of the thruster reached 26 mN/W at atmospheric pressure at a 150 mm gap. At a pressure of 0.05 atm (corresponds to an altitude of 20 km) the maximum thrust per unit length was 1.8 mN/m and the thrust-to-power ratio was 0.5 mN/W. Theoretical and experimental data on the normalized effectiveness on the altitude of the thruster were obtained. •Electrohydrodynamic thruster performance at the lower boundary of the near-space was studied.•Thruster efficiency reached 26 mN/W at 1 atm.•The thrust per unit length of 1.8 mN/m and the effectiveness of 0.5 mN/W at pressure of 0.05 atm was achieved.