Technology development of fabrication techniques for advanced solar dynamic concentrators

The objective of the advanced concentrator program is to develop the technology that will lead to lightweight, highly reflective, accurate, scaleable, and long lived space solar dynamic concentrators. The advanced concentrator program encompasses new and innovative concepts, fabrication techniques, materials selection, and simulated space environmental testing. Fabrication techniques include methods of fabricating the substrates and coating substrate surfaces to produce high quality optical surfaces, acceptable for further coating with vapor deposited optical films. The selected materials to obtain a high quality optical surface include microsheet glass and Eccocoat EP-3 epoxy, with DC-93-500 selected as a candidate silicone adhesive and levelizing layer. The following procedures are defined: cutting, cleaning, forming, and bonding microsheet glass. Procedures are also defined for surface cleaning, and EP-3 epoxy application. The results and analyses from atomic oxygen and thermal cycling tests are used to determine the effects of orbital conditions in a space environment

Technology development program for an advanced microsheet glass concentrator

Solar Dynamic Space Power Systems are candidate electrical power generating systems for future NASA missions. One of the key components in a solar dynamic power system is the concentrator which collects the sun's energy and focuses it into a receiver. In 1985, the NASA Lewis Research Center initiated the Advanced Solar Dynamic Concentrator Program with funding from NASA's Office of Aeronautics and Space Technology (OAST). The objectives of the Advanced Concentrator Program is to develop the technology that will lead to lightweight, highly reflective, accurate, scaleable, and long lived (7 to 10 years) space solar dynamic concentrators. The Advanced Concentrator Program encompasses new and innovative concepts, fabrication techniques, materials selection, and simulated space environmental testing. The Advanced Microsheet Glass Concentrator Program, a reflector concept, that is currently being investigated both in-house and under contract is discussed

(Dis)orderly development in the North: Resistance and rule in the Northern Boreal Initiative (Ontario)

In 2001 the Ontario Ministry of Natural Resources released the Northern Boreal Initiative, outlining their plans to develop commercial forestry operations in the far northern regions of the province where many First Nations communities are located. The NBI emphasized an approach to land management known as \u27community-based land use planning\u27 or CBLUP, which stressed the importance of community led economic development. Drawing on concepts of appropriation, translation and alignment developed within the governmentality literature, I propose that such locally or regionally specific development projects can be viewed as sites where resistance and rule interact, resulting in novel configurations and organizations of governing and governed. The thesis also explores links between the Northern Boreal Initiative and international development discourse to illustrate how policies and plans for development employ the community discourse in order to attempt to govern the participation of indigenous communities in development projects. Source: Masters Abstracts International, Volume: 44-01, page: 0196. Thesis (M.A.)--University of Windsor (Canada), 2005