• The preferred reflector design concept of a coated plastic reflector stretched over a deployable space structure can be delivered in discrete elements to GEO orbit, and utilize telerobotic deployment, berthing and assembly in orbit; • The required flatness of the reflector can be achieved with an adaptive structure already proven on other technology programs and science missions; • A completely deployable reflector concept based on a spoked wheel and a "Maypole" structure with a thin film reflector stretched across the entire diameter of the structure, is contained in a compact package that can be deployed with a single launch. This concept will require significant new technology development and extensive testing; • The attitude precision requirement is routinely achieved on present spacecraft; • The preferred reflector concept will require about 15 launches of a cargo launch vehicle such as the space shuttle with an achievable launch cost target of about $1500/kg. Orbit-to-orbit transportation will use solar electric propulsion • Several space transportation options are being developed that can meet PRS requirements and economic goals; • A phased program development sequence indicates that an operational PRS system could be available in 15 years; • The PRS concept provides a means to access renewable energy sources located at great distances from major markets; • The mechanical and power beaming technologies required for a PRS appear to be technically feasible based on the existing state-of-the-art; • 2.45 or 5.8 GHz frequency is preferred to reduce prime power requirements, to obviate higher atmospheric defocusing losses, and to draw upon the extensive experience in microwave beam transmission and reception; • Reflector design can proceed based on known principles of structural design and surface flatness control; • The current and planned space programs, systems, and technologies of space-faring countries in support of the evolving space infrastructure are advancing the feasibility of the PRS; and • The development of the PRS can provide access to renewable resources available on Earth and represents an important stage in achieving the goal of obtaining power from space for use on Earth.
RkJQdWJsaXNoZXIy MTU5NjU0Mg==