Finite element modelling and performance optimization of an ion thruster depending on the nature of the propellant
Tóm tắt
The electrostatic propulsion is a class of space propulsion which makes use of electrical power and this kind of systems are characterized by high exhaust velocities and specific impulse, enhancing the propulsive performances of thrusters compared to conventional chemical thrusters. Since the ionized particle exhaust velocity is a function of the ratio between the electrical charge and their molecular mass, the obvious solution is to use ions with low electrical charge–molecular mass ratio. Currently, the most used propellant for the space propulsion is the Xenon gas, as it has a series of important advantages, but is quite expensive when compared to other propellants. This paper aims to make an optimization of the ideal ion propulsion systems depending on the nature of the propellant, like common used substances in the space propulsion, but also other substances which are potential candidates for this application. A variety of ion thruster performances will be analyzed, such as force, specific impulse, efficiency for the same power available onboard, the same accelerating voltage, and the same ion current. Also, for the Xenon case a numerical simulation was performed to highlight the behavior and trajectory of the ionized particles and their velocity. The conclusion obtained following the study is that a reasonable ion thruster regarding the dimensions should use an accelerating potential of at least 4000 V and 2 A of ion current.
Tài liệu tham khảo
Choueiri, E.Y.: A critical history of electric propulsion: the first 50 years (1906–1956). J. Propuls. Power 20(2), 193–203 (2004)
Barnett, J.W.: A review of Soviet plasma engine development. 21st International Electric Propulsion Conference, Orlando, Florida. AIAA-90-2600, (1990)
Cybulski, R.J., Shellhammer, D.M., LoveII, R.R., Domino, E.J., Kotnik, J.T.: Results from sert i ion rocket flight test. NASA Technical Note D2718 (1965)
Sovey, J.S., Rawlin, V.K., Patterson, M.J.: Ion propulsion development projects in U. S.: Space Electric Rocket Test 1 to Deep Space 1. J. Propuls. Power 17(3), 517–526 (2001)
Jahn, R.G., Choueiri, E.Y.: Electric propulsion. Encyclopedia of Physical Science and Technology, 3rd Edition, vol. 5, pp. 125–141. The Academic Press, San Diego (2001)
Cican, G., Popa, I.F.: Optimizing ideal Ion Propulsion Systems depending on the nature of the Propellant. International Conference of Aerospace Sciences “Aerospatial 2016”, Bucharest, INCAS, 26–27 October 2016, INCAS Bulletin, vol. 8, Issue 4, 2016, pp. 93–103
Sheth, V.: Spacecraft electric propulsion—a review. Int. J. Res. Aeronaut. Mech. Eng. 2(9), 43–55 (2014)
Sutton, G.P.: Rocket propulsion elements, 7th edn. Wiley-Interscience, New York (2001)
Cican, G., Stanciu, V.: Sisteme de propulsie și corecție spațială—Aplicații. Editura Printech, Northampton (2015)
Caramariuc, R., Spulber, V.: De la electrostatica la racheta ionica. Editura Albatros, Prague (1983)
Bodnar, M.: Creation and Analysis of an Electric and Magnetic Model of a Micro Ion Thruster. Faculty of Aerospace Engineering. California Polytechnic State University, San Luis (2013)
Hedges, D.E., Meserole, J.S., Rorabaugh, M.E.: Method for making an ion thruster grid. The Boeing Company. http://www.google.com/patents/US5551904 (1996). Accessed 2017