Accession Number : AD0659983

Title :   THE THEORY OF A PLASMA ACCELERATION PROCESS SUITABLE FOR SPACE PROPULSION AND FUSION INJECTION,

Corporate Author : REPUBLIC AVIATION CORP FARMINGDALE N Y

Personal Author(s) : Mostov,P. M. ; Neuringer,J. L. ; Rigney,D. S.

Report Date : 15 FEB 1960

Pagination or Media Count : 47

Abstract : The slug model of a plasma accelerator is formulated and analyzed. The coupled non-linear system equations involving seven parameters are transformed into a three-parameter set. It is shown how to optimize the efficiency and specific impulse of an accelerator through suitable adjustment of the system parameters. The optimum condition, for a stipulated accelerator power input and mass flow rate, is to minimize the system resistance, initial inductance, and capacitance of the capacitor bank, while making the inductive gradient and initial capacitor charge as large as feasible. The condition that the capacitance be small implies that the discharge repetition rate of an accelerator should be as high as possible. Optimum acceleration cut-off points are discussed. Utilization factors (the ratio of the directed kinetic energy to the net energy removed from the capacitor bank) almost equal to the highest obtainable in a particular case frequently can be achieved with practical accelerator lengths by terminating the acceleration process at early local voltage peaks. This is consistant with the requirements for high capacitor charging efficiency. Finally, the concept of a multi-stage accelerator is introduced, and it is shown that multi-staging increases the system efficiency. (Author)

Descriptors :   (*PLASMA ACCELERATORS, MATHEMATICAL MODELS), THEORY, SPACE PROPULSION, EFFICIENCY, INJECTION, OPTIMIZATION, ENERGY, EQUATIONS, KINETIC ENERGY, THERMONUCLEAR REACTIONS

Subject Categories : Plasma Physics and Magnetohydrodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE