A thrust-sheet propulsion concept using fissionable elementsA space propulsion concept is proposed and analyzed which consists of a thin sheet coated on one side with fissionable material, so that nuclear power is converted directly into propulsive power. Thrust is available both from ejected fission fragments and from thermal radiation. Optimum thicknesses are determined for the active and substrate layers. This concept is shown to have potential mission capability (in terms of velocity increments) superior to that of all other advanced propulsion concepts for which performance estimates are available. A suitable spontaneously fissioning material such as Cf-254 could provide an extremely high-performance first stage beyond earth orbit. In contrast with some other advanced nuclear propulsion concepts, there is no minimum size below which this concept is infeasible.
Document ID
19770030165
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Moeckel, W. E. (NASA Lewis Research Center Cleveland, Ohio, United States)
Date Acquired
August 9, 2013
Publication Date
November 1, 1976
Subject Category
Spacecraft Propulsion And Power
Report/Patent Number
AIAA PAPER 76-1042
Meeting Information
Meeting: International Electric Propulsion Conference
Location: Key Biscayne, FL
Start Date: November 14, 1976
End Date: November 17, 1976
Sponsors: American Institute of Aeronautics and Astronautics