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Record Details

Record 40 of 10127
Inductively coupled TI-MPD spacecraft electric propulsion. [thermionic magnetoplasma dynamic thruster design]
Author and Affiliation:
Britt, E. J.(Rasor Associates, Inc., Sunnyvale, Calif., United States)
Clark, K. E.(Rasor Associates, Inc., Sunnyvale, Calif., Princeton University)
Pawlik, E. V.(California Institute of Technology, Jet Propulsion Laboratory, Pasadena, Rasor Associates, Inc.)
Abstract: A nuclear electric propulsion concept using a thermionic reactor inductively coupled to a magnetoplasma-dynamic (MPD) accelerator is described and the results of preliminary analyses are presented. In this system, the thermionic generating unit operates continuously at a power level of approximately 0.4 MW, while the MPD thruster operates intermittently at higher voltages and power levels. Energy storage is provided by building up a large current in an inductor. Periodically, the charging current is interrupted and the energy stored in the magnetic field of the inductor is utilized for a short duration thrust pulse. A typical thrust pulse is characterized by a power level of 1 to 4 MWe, a duration of 1 msec, and a duty cycle of approximately 20%. Results of the preliminary analysis show that approximately 85 to 90% of the power available from the thermionic converter array can be delivered to the MPD thruster for a nominal 400 kWe system with an inductive unit suitable for a flight vehicle. Optimized values of the total specific mass of the system including the thermionic reactor, the inductor, and the MPD thruster are estimated in the range of 23 to 24 kg/kWe.
Publication Date: Jan 01, 1976
Document ID:
19770029987
(Acquired Dec 01, 1995)
Accession Number: 77A12839
Subject Category: SPACECRAFT PROPULSION AND POWER
Document Type: Conference Proceedings
Publication Information: SEE A77-12662 02-44
Publisher Information: United States
Meeting Information: 11th Conference on Intersociety Energy Conversion Engineering; September 12-17, 1976; State Line, NV
Financial Sponsor: NASA; United States
Organization Source: Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA, United States
Princeton Univ.; NJ, United States
Rasor Associates, Inc.; Sunnyvale, CA, United States
Description: 8p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: INDUCTORS; NUCLEAR ELECTRIC PROPULSION; PLASMA ACCELERATORS; SPACECRAFT PROPULSION; THERMIONIC CONVERTERS; COUPLING CIRCUITS; ENERGY CONVERSION EFFICIENCY; ENERGY STORAGE; OPTIMIZATION; PLASMA ENGINES; ROCKET ENGINES; SPACECRAFT DESIGN
Imprint And Other Notes: In: Intersociety Energy Conversion Engineering Conference, 11th, State Line, Nev., September 12-17, 1976, Proceedings. Volume 2. (A77-12662 02-44) New York, American Institute of Chemical Engineers, 1976, p. 1471-1478. NASA-supported research.
Availability Source: Other Sources
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