1. lMiller,T. M. "SystemsAnalysisfor an Operational 4wo 45w EOTV,"AIAAPaper 91-2351,June 1991.
2. Each of the advancedpropulsionoptionsexcept the hydrogen resistojet and baseline arcjet is projected to provide the Delta IIa GEOpayload capabilitycomparable to or exceedingthat of the AtlasIIAS,at a similar orlowercost. Hydrogensolarthermalpropulsion offers the greatest potential for cost reductions-possibly as much as 3040%. Among the electric propulsion op tions, the advancedarcjet. the SPT,and theion systems mightallprovidelaunchcoststhat are slightlyless than that of theAtlas IIAS. Thearcjet must have an efficiencyof 45-50% to achievethis. For thispayload class, an advancedion system using ahigh-voltageconcentrator solar array requires slightlylesspower than doesan advancedarcjetsystemandislowerincost.
3. Ahigher-power advanced ion propulsion could Assessmentof ElectricPropulsionTechnologyforNear-EarthSpaceMissions,"AIAAPaper 92-3202,July 1992.
4. Analysis of expendable electric orbit transfer vehicles