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Ryan Nadar,
Prof. Shiva Prasad,
- Student, Department of Aerospace Engineering, Ajeenkya DY Patil University, Pune, Maharashtra, India
- Professor, Department of Aerospace Engineering, Ajeenkya DY Patil University, Pune, Maharashtra, India
Abstract
Field-Emission Electric Propulsion (FEEP) represents a cutting-edge advancement in electric propulsion systems, leveraging the principle of ion emission through intense electric fields to generate precise and efficient thrust for spacecraft. This study explores the working mechanisms, performance characteristics, and applications of FEEP thrusters in the context of modern space exploration. FEEP systems utilize liquid metals, such as cesium or indium, as propellants, which are ionized at the emitter tip and accelerated by an electric field to generate thrust. The ultra-low thrust levels, high specific impulse (10,000 – 100,000 s), and minimal propellant consumption make FEEP an ideal solution for fine attitude control, station-keeping, and precision maneuvers for small satellites and interplanetary missions. A revolutionary development in space exploration, ion propulsion technology allows for longer and more effective spaceship missions. Ion thrusters, in contrast to traditional chemical propulsion, use electrically charged particles to produce thrust with unmatched efficiency. This article examines the latest developments in ion propulsion technology, as well as its wide range of uses and importance in contemporary space missions. Performance-enhancing advancements in materials engineering, power management, and ion thruster design are highlighted. The paper also explores how ion propulsion might affect satellite operations and interplanetary travel in the future.
Keywords: FEEP, Space exploration, Ion Thruster, propulsion, satellite operations.
[This article belongs to Recent Trends in Fluid Mechanics (rtfm)]
Ryan Nadar, Prof. Shiva Prasad. The Evolution of Ion Propulsion Systems: A Comprehensive Review of Technologies and Applications. Recent Trends in Fluid Mechanics. 2025; 12(01):-.
Ryan Nadar, Prof. Shiva Prasad. The Evolution of Ion Propulsion Systems: A Comprehensive Review of Technologies and Applications. Recent Trends in Fluid Mechanics. 2025; 12(01):-. Available from: https://journals.stmjournals.com/rtfm/article=2025/view=194223
References
- Gil Berl. Google (n.d.). Ion thruster (US Patent No. 9657725B2). Retrieved from https://patents.google.com/patent/US9657725B2/en
- The Space (n.d.). (February 10, 2021) Ion thrusters: How it works. [Online]. Available from https://www.thespacetechie.com/ion-thrusters-how-it-works/
- Goebel, M., & Katz, I. Fundamentals of Electric Propulsion: Ion and Hall Thrusters. Jet Propulsion Laboratory, California Institute of Technology. JPL SPACE SCIENCE AND TECHNOLOGY SERIES (March 2008.) Retrieved from https://descanso.jpl.nasa.gov/SciTechBook/series1/Goebel cmprsd_opt.pdf
- European Space Agency (ESA). (n.d.). (2025). What is electric propulsion?[Online Retrieved from https://esa.int/Enabling_Support/Space_Engineering_Technology/What_is_Electric_propulsion
- Suk Hyun Yeo, Dinaol Gadisa, Hideaki Ogawa, HyoChoong Bang. Multi-objective design optimization and physics-based sensitivity analysis of field emission electric propulsion for CubeSat platforms. Aerospace Science and Technology. November 2024; 154, 109516
- Marcuccio, A. Genovese, M. Andrenucci, C. Bartoli, J. Gonzalez, G. Saccoccia. Field Emission Electric Propulsion (FEEP) System Study. In Proceedings of the International Electric Propulsion Conference (IEPC-93-156) . electricrocket. Retrieved from https://electricrocket.org/IEPC/IEPC1993-156.pdf
- Manish K. Bhartiz, Sonia Chalia. Literature Study of Field Emission Electric Propulsion Microthruster. International Research Journal of Engineering and Technology. May 2017; 4(05): 2777-2781.
- Pizzagalli, V., Gonzalez del Amo, J., Stramaccioni, D., & Ponti, FDarwin Mission: The Field Emission Electric Propulsion (FEEP) Option. Proceedings of the 4th International Spacecraft Propulsion Conference (ESA SP-555). 2-9 June, 2004, Chia Laguna (Cagliari), Sardinia, Italy. CDROM., id.84.1
- Tajmar, J. Mitterauer and J. Wang. Field-Emission-Electric-Propulsion (FEEP) plasma modeling – 3-D full particle simulations. 22 Aug 2012. 35th Joint Propulsion Conference and Exhibit. 20 June 1999 – 24 June 1999. Los Angeles, CA, U.S.A.
- Seifert B, Bettiol L, Buldrini N, Eizinger M, Krejci D, Del Amo JG, Massotti L. Field Emission Electric Propulsion: Enabling future Science and Earth Observation Missions. In2024 IEEE Aerospace Conference 2024 Mar 2 (pp. 1-13). IEEE.
- Tajmar M, Genovese A, Steiger W. Indium field emission electric propulsion microthruster experimental characterization. Journal of propulsion and power. 2004 Mar;20(2):211-8.
- Hugonnaud V, Mazouffre S, Krejci D. Faraday cup sizing for electric propulsion ion beam study: Case of a field-emission-electric propulsion thruster. Review of Scientific Instruments. 2021 Aug 1;92(8).

Recent Trends in Fluid Mechanics
Volume | 12 |
Issue | 01 |
Received | 04/01/2025 |
Accepted | 07/01/2025 |
Published | 15/01/2025 |