EFFICIENT GENERATION OF OPTIMAL MULTIBEAM IMRT PLANS

Not Available Modern US Navy aircraft as well as older aircraft currently being updated to today's avionic standards, contain avionics and ordinance equipment that require regulation of the 28VDC system. The V-22 platform utilizes three regulated AC/DC converters (CVs) to provide regulated DC power from the AC generator source. The presently used device uses a power topology that yields both a very complex device and electrical system. The current design provides a regulated DC output at the expense of reliability, cost, weight, electrical performance and aircraft system compatibility. Avionic Instruments Inc. offers to perform a Phase I SBIR feasibility study to verify that by utilizing a patented form of regulated transformer rectifier, the V-22 CV can be improved. Specifically, this technology will allow unit cost to be reduced to less than $ 15,000., overall weight to less than 25 lbs. and reliability to be increased by ten fold. A Line Conditioner-based AC/DC Converter (CV) is proposed that will, in addition to meeting SBIR objectives, provide TRU-like qualities such as high input power factor, low input current harmonics, high overload and short circuit capability. A reduced parts count enables the design to increase reliability and reduce cost. Avionic Instruments will examine potential semiconductor devices, new magnetic materials and novel thermal approaches to further enhance the design. Circuit models will be created and computer simulations performed to demonstrate comparative differences of various regulated converter topologies. In addition, a demonstration of the existing Line Conditioner-based CV topology will be provided to the Navy. A final report will be provided at the conclusion of Phase I.