A planetary capture vehicle based on a particle bed reactor propulsion system

Physics

Scientific paper

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Elliptical Orbits, Interplanetary Flight, Nuclear Propulsion, Saturn (Planet), Mission Planning, Propellant Storage, Radiation Shielding, Spacecraft Design, Spacecraft Radiators, Specific Impulse

Scientific paper

A design exercise is described which was aimed at exploring the benefits offered by the particle bed reactor propulsion system being developed by the Air Force Phillips Laboratory under the Space Nuclear Thermal Propulsion (SNTP) program. Topics discussed include nuclear and solar heating of the propellant, decay heat removal after operation, and radiation shielding. The design exercise revealed the viability of fast direct planetary capture missions using a single launch of a conventional booster vehicle. This mission capability is considered to be unique to the SNTP engine, because the combination of specific impulse and mass efficiency makes it possible to design a vehicle with a low initial mass in low earth orbit that can generate high velocity increments.

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