Statistics – Applications
Scientific paper
Jan 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aipc..420.1344b&link_type=abstract
Space technology and applications international forum - 1998. AIP Conference Proceedings, Volume 420, pp. 1344-1351 (1998).
Statistics
Applications
Electrostatic And High-Frequency Confinement, Theory, Design, And Computerized Simulation, Ion And Plasma Propulsion
Scientific paper
Extremely advanced space propulsion systems, based on use of inertial-electrostatic-fusion (IEF) light-weight, high-power fusion energy sources (FES), use p11B reactions for radiation-free production of energetic charged particles. These can be converted directly to electrical power to heat propellant by injection of sub-relativistic e-beams (REB) into propellant in magnetically-insulated thrust (BMT) chamber. This paper presents an examination of engineering interfaces and limits important in each major subsystem of a complete IEF engine system. In the FES, the principal limit is high voltage standoff and arcing; in the REB e-beam transport stability and limits on diode emission are of concern, while main BMT problems include e-beam injection, coupling to propellant plasma, and suppression of plasma-to-structure heat transfer. In the complete QED engine system the principal problem is maintenance of vehicle charge neutrality. Potential engineering solutions for each of these are defined and examined and their limits determined. An R&D program to address and resolve these (and allied) issues has been shown to require about #3-3.5 B over 14-17 years, to yield a full-scale prototype QED engine system, at 5000 MWe with Isp>2500 sec at F~40,000 kgf (400 kN).
Bussard Robert W.
Froning David H.
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