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178
Jul 26, 2010
07/10
by
Bingel, Bradford D
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The Transferable Output ASCII Data (TOAD) Gateway, release 1.0 is described. This is a software tool for converting tabular data from one format into another via the TOAD format. This initial release of the Gateway allows free data interchange among the following file formats: TOAD; Standard Interface File (SIF); Program to Optimize Simulated Trajectories (POST) input; Comma Separated Value (TSV); and a general free-form file format. As required, additional formats can be accommodated quickly...
Topics: ION ENGINES, SPACECRAFT POWER SUPPLIES, MARS PROBES, PROPULSION SYSTEM CONFIGURATIONS, SOLAR CELLS,...
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408
Jun 21, 2010
06/10
by
Boswinkle, R. W., Jr
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NASA acoustics research program on aircraft noise generation and reduction
Topics: CASCADE CONTROL, ELECTRICAL IMPEDANCE, GYRATORS, LOSSLESS EQUIPMENT, NETWORK SYNTHESIS, CONSTANTS,...
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998
Jul 12, 2010
07/10
by
Britcher, C. P
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Wind tunnel magnetic suspension and balance systems (MSBSs) have so far failed to find application at the large physical scales necessary for the majority of aerodynamic testing. Three areas of technology relevant to such application are investigated. Two variants of the Spanwise Magnet roll torque generation scheme are studied. Spanwise Permanent Magnets are shown to be practical and are experimentally demonstrated. Extensive computations of the performance of the Spanwise Iron Magnet scheme...
Topics: ATTITUDE CONTROL, POWER CONDITIONING, SAFETY, SOLAR ARRAYS, ELECTROCHEMISTRY, ENERGY STORAGE,...
The application of pulsed power technology to advanced mission scenarios increasingly involves achieving higher peak power and energy while shrinking the deployment package. The inherent high energy density of explosives make them an obvious candidate for applications requiring extremely compact, single shot pulsed power drivers. However, explosive flux compression generators tend to be rather slow, low impedance, high current devices, while the loads of interest typically present a relatively...
Topics: DTIC Archive, PHILLIPS LAB KIRTLAND AFB NM, *ENERGY DENSITY, *EXPLOSIVES, *GENERATORS, *HIGH...
Alternate or advanced energy conversion methods frequently require d-c to a-c conversion since the energy output must be synchronized with an existing utility grid. The objective of this paper is to describe various preliminary system concepts for interfacing advanced solid-state energy converters to the utility grid with a significant potential for reducing initial capital investment. Recent ERDA sponsored studies have identified the solid-state d-c to a-c inverter as a key element for further...
Topics: DTIC Archive, Kleiner,C T, ROCKWELL INTERNATIONAL ANAHEIM CA ELECTRONIC DEVICES DIV, *SEMICONDUCTOR...
This paper discusses the development of parallelable power conditioning units capable of operating from 200 V line-to-line, 3-phase 400 Hz ac or 270 V dc input power to produce a 10 kVA regulated, low-distortion 115/200 Vac, 3-phase, 400 Hz output. (Author)
Topics: DTIC Archive, Lawrence,W G, DELTA ELECTRONIC CONTROL CORP IRVINE CALIF, *POWER CONDITIONING, *PULSE...
The results of an evaluation of a prototype 15 KW power conditioner, built by Delco Electronics, for MERADCOM are contained in this report. The evaluation was a prerequisite in the preparation for developing a microprocessor-based controller to replace an existing controller in the power conditioner. The primary objective of the evaluation was to obtain a thorough understanding of the power conditioner from studying the latest available documentation and to define the requirements for a...
Topics: DTIC Archive, YUCCA INTERNATIONAL INC SCOTTSCALE AZ, *MICROPROCESSORS, CONTROL SYSTEMS, PERFORMANCE...
Contents: Waveforms, Generalized Three-Phase Waveform Generator, Development of Inverter Concept, Thyristor and Diode Currents, Test Results, and Parts Lists.
Topics: DTIC Archive, Corry,T, Barrett,, GENERAL MOTORS CORP GOLETA CALIF DELCO ELECTRONICS DIV, *FREQUENCY...
CONTENTS: PHYSICAL DESIGN OF LINEAR INDUCTION ACCELERATOR CELL; OPTIMIZING THE PROBLEM OF MATCHING WAVEFRONT SENSOR AND WAVEFRONT CORRECTOR; DESIGN OF RF CAVITY FOR HEAVY ION RESEARCH FACILITY IN LANZHOU COOLING STORAGE RING; TWO RADIATING SYSTEMS WITH A BEAM WAVEGUIDE OR VACUUM FLEXIBLE ELLIPTICAL WAVEGUIDE FOR HIGH POWER MICROWAVE APPLICATIONS; 1.5GHz CHINESE NIOBIUM SUPERCONDUCTING CAVITY: PROGRESS IN RESEARCH; THERMAL DISTORTION AND DAMAGE OF OPTICAL COMPONENTS SUBJECTED TO CONTINUOUS-WAVE...
Topics: DTIC Archive, NATIONAL AIR INTELLIGENCE CENTER WRIGHT-PATTERSON AFB OH, *FREE ELECTRON LASERS,...
The generation of high power microwaves using explosively driven pulsed power is of particular interest to the defense community. The high energy density of explosives provides the opportunity to design pulsed power systems which occupy significantly less volume, yet provide the same output power, as traditional methods of High Power Microwave (HPM) production. Utilizing a Flux Compression Generator (FCG) as explosive driver necessitates introducing an intermediate Power Conditioning System...
Topics: DTIC Archive, TEXAS TECH UNIV LUBBOCK CENTER FOR PULSED POWER AND POWER ELECTRONICS, *POWER...
There exists an acute need for a solid state fault interrupter capable of operating at high voltages and/or high currents, for such applications as command chargers, electromagnetic launchers and other high power conditioning applications. The gate turn-off thyristor (GTO) is suited for this task. This requires series connection of several devices and their support systems (electronic and thermal). Reliable operation depends on devising a control algorithm that will cause the individual GTO's...
Topics: DTIC Archive, ARMY ELECTRONICS TECHNOLOGY AND DEVICES LAB FORT MONMOUTH NJ, *INTERRUPTERS, *SOLID...
The Los Alamos National Laboratory has applied the explosive magnetic flux compression generator (FCG) technology to the high-energy foil-implosion project, Trailmaster, to reach energy levels unattainable by other methods under current budget constraints. A required component for FCG systems is a power-conditioning stage that matches the slow risetime of the energy source with the fast-risetime requirements of the foil implosion load. Currently, the Trailmaster concept is based on a two-step...
Topics: DTIC Archive, LOS ALAMOS NATIONAL LAB NM, *FUSES(ELECTRICAL), *PLASMAS(PHYSICS), COMPRESSION,...
A design concept of the coil gun together with its power conditioning unit as an integrated system has been developed. The coil gun operates on the principle of the classical multiphase induction machine, and can therefore be called a linear induction launcher (LIL). It has the advantage of eliminating the need for accurate synchronization of the switching sequence. The projectile consists of a payload housed within a conductive sleeve. Strong centering forces due to the currents in the sleeve...
Topics: DTIC Archive, Zabar, Zivan, POLYTECHNIC UNIV BROOKLYN NY DEPT OF ELECTRICAL ENGINEERING AND...
Two approaches for using explosives to interrupt current flowing in solid conductors are described. One concept uses explosives to extrude the switch conductor into thin regions that fuse due to current in the switch. A preliminary scaling law is presented. The second approach employs dielectric jets to sever current carrying conductors. A feasibility experiment and an improved design are described.
Topics: DTIC Archive, LOS ALAMOS NATIONAL LAB NM, *ELECTRIC CONDUCTORS, CIRCUITS, DEFORMATION, EXPLOSIVES,...
This paper describes the application of subsystem summary algorithms for self-contained power system configuration trade-off studies, and presents the results of a recently completed study. The development of summary weight algorithms for rocket turbines and rotating electrical generators is described. These new algorithms are combined with previously developed power conditioning subsystem algorithms in a computer program to automatically study various system configurations. A flow chart of the...
Topics: DTIC Archive, AIR FORCE AERO PROPULSION LAB WRIGHT-PATTERSON AFB OH, *ALGORITHMS, *ELECTRIC...
The Experimental Test Accelerator II is a high-average-power, high-repetition- rate linear induction accelerator at Lawrence Livermore National Laboratory. Magnetic pulse compressors are used in the power conditioning chains that produce pulses used to accelerate the electron beam. Stable operation of each power-conditioning chain is essential to overall accelerator performance. Variations in voltage or timing (jitter) of pulses driving the induction cells can cause unacceptable variations in...
Topics: DTIC Archive, LAWRENCE LIVERMORE NATIONAL LAB CA, *LINEAR ACCELERATORS, *PULSE COMPRESSION, DIRECT...
The wind turbine generator chosen for the evaluation was a horizontal-axis-propeller-downwind rotor driving a three-phase, self-excited alternator through a step-up gear box. The alternator is fed into the base power distribution system through a three-phase, line-communtated-synchronous inverter using SCRs. The site has moderate wind conditions with an annual average windspeed of 12 to 14 mph, and the WECS turbine has a relatively high (29 mph) rated windspeed. The 20-kW WECS systems was...
Topics: DTIC Archive, Pal,D, NAVAL CIVIL ENGINEERING LAB PORT HUENEME CA, *ELECTRIC POWER PLANTS, *WIND...
Harmonic distortion of a voltage waveform on a local distribution system may have many effects, such as: protective device malfunctions, medical equipment failures, and increased noise generation and bearing wear of rotating equipment. In the past these effects have been tolerated. Advances in semiconductor technology in the past two decades have produced devices that can handle large amounts of power efficiently and safely. These advances have led to an increased number of loads that...
Topics: DTIC Archive, Jones, Kevin D., NAVAL POSTGRADUATE SCHOOL MONTEREY CA, *TRANSMISSION LINES, *POWER...
Pulsed Power Hydrodynamics (PPH) is an application of low-impedance pulsed power, and high magnetic field technology to the study of advanced hydrodynamic problems, instabilities, turbulence, and material properties. PPH can potentially be applied to the study of the properties of warm dense matter (WDM) as well. Exploration of the properties of warm dense matter such as equation of state, viscosity, conductivity is an emerging area of study focused on the behavior of matter at density near...
Topics: DTIC Archive, LOS ALAMOS NATIONAL LAB NM, *ELECTROMAGNETIC PULSES, *HYDRODYNAMICS, ENERGETIC...
By the year 2000, an increasingly large portion of our national defense will depend on space-based systems. As part of a broader set of new research initiatives in support of space systems, the Air Force Office of Scientific Research is sponsoring basic research that may be applicable to the development of megawatt-level space prime-power systems. (The emphasis of this particular new initiative is prime-power versus pulsed power including power conditioning, such as fly-wheel or inductive...
Topics: DTIC Archive, Turchi,Peter J, R AND D ASSOCIATES ARLINGTON VA, *High power, *High energy,...
This report describes the efforts to develop a microprocessor-based controller for the Delco 15KW power conditioner. Continuing from the hardware development, the previous task, the software necessary to perform voltage regulation of the converter section was developed. The assembled program was executed and debugged using the simulation capability provided.
Topics: DTIC Archive, YUCCA INTERNATIONAL INC SCOTTSCALE AZ, *CONTROL SYSTEMS, *MICROPROCESSORS, *POWER...
Power conditioning systems for high peak and average power, high repetition rate discharge excited lasers involve operation of modulator components in unconventional regimes. Reliable operation of switches and energy storage elements under high voltage and high direct conditions is a pacing item for laser development at the present time. To test and evaluate these components a Modulator Component Test Facility (MCTF) was constructed. The MCTF consists of a command charge system, energy storage...
Topics: DTIC Archive, LAWRENCE LIVERMORE NATIONAL LAB CA, *TEST FACILITIES, *THYRATRONS, CIRCUITS, ENERGY...
High energy lasers for Army tactical weapons systems requires major advances in pulse power technology to meet the objective of mounting the weapon system on a mobile platform. The power conditioning pulser is one of the largest sub-systems. The Electronic Technology and Devices Laboratory (ET&DL), ERADCOM is actively involved in developing components and pulser sub-systems to meet that objective. The unique power facility at ET&DL has been utilized on a cooperative basis with industry...
Topics: DTIC Archive, ARMY ELECTRONICS TECHNOLOGY AND DEVICES LAB FORT MONMOUTH NJ, *HIGH ENERGY LASERS,...
The Silicon carbide (SiC) device area is presently limited by material and processing defects. To meet the large current handling requirements of modern power conditioning systems, the paralleling of a large number of devices is required. This can increase costs and complexity through wafer dicing, device soldering, the inclusion of ballast resistors, and the formation of multiple wire bonds. Furthermore, paralleling numerous discrete devices increases package volume and weight and reduces...
Topics: DTIC Archive, NORTHROP GRUMMAN SYSTEMS CORP LINTHICUM MD ELECTRONIC SYSTEMS, *ELECTRIC CONNECTORS,...
To meet the large current handling requirements of modern power conditioning systems, paralleling of a large number of devices is required. This increases cost and complexity through dicing, soldering, and forming multiple wire bonds. Furthermore, paralleling discrete devices increases package volume/weight and reduces power density. To overcome these complexities, PiN diodes were designed, fabricated at high yields, tested, and interconnected on a three-inch 4H-SiC wafer to form an 11.72 cm2...
Topics: DTIC Archive, NORTHROP GRUMMAN CORP LINTHICUM HEIGHTS MD ELECTRONIC SENSORS AND SYSTEMS DIV,...
Pressing needs in several contemporary power, military, and scientific areas have put severe requirements on power conditioning components. In an effort to advance the state of the art, component selection and development tests were collected into a major proposal in 1978-79 at Los Alamos National Laboratory by three interested divisions. One significant portion of that proposal created the 300-kW Capacitor Test Facility (CTF). This paper is the first report of the facility operation and...
Topics: DTIC Archive, LOS ALAMOS NATIONAL LAB NM, *CAPACITORS, *TEST FACILITIES, MODELS, MONITORING,...
Contents: Introduction; Prior Contract Effort; Inverter/Converter Integration; Summary of Test Performance; Conclusions and Recommendations -- Parameter 2 - Frequency Changer Input Frequency and Parameter 3 - Input Current, Parameter 13 - Short Circuit Current, Parameter 16 - No Load Losses, Parameter 17 - Efficiency at Full Load, Parameter 18 - Efficiency at Rated Load, Recommendations; Appendix: Parts Lists and Diagrams.
Topics: DTIC Archive, GENERAL MOTORS CORP GOLETA CA DELCO ELECTRONICS DIV, *POWER CONDITIONING, *INVERTERS,...
As a vibrant and growing field of endeavor, pulsed power has a need at this time for an organized collection of literature pertinent to the field. As a result, a comprehensive bibliography of pulsed power is being compiled to provide researchers and students in this field a guide to the literature. The bibliography will consist of citations pertaining to energy storage, switching, particle beam generation and transport, power conditioning and transport, breakdown, and diagnostics. The...
Topics: DTIC Archive, AIR FORCE WEAPONS LAB KIRTLAND AFB NM, *POWER CONDITIONING, *PULSES,...
An 8-J/pulse magnetic pulse compressor has been built to demonstrate a power conditioning technique whereby battery power is converted into a train of 5-Its pulses at a maximum pulse repetition frequency of 11 kHz. The machine employs inverter-grade thyristors that switch with less than 120-ps pulse-to-pulse jitter. The network uses a phased-triggering scheme to obtain an output voltage regulation of + or - 0.002%. Magnetic core reset is achieved by using a reflected portion of the output pulse...
Topics: DTIC Archive, GENERAL ATOMICS SAN DIEGO CA, *LASERS, *PULSE COMPRESSION, *SOLID STATE ELECTRONICS,...
Air Force currently has a strong need for the development of compact capacitors which are mechanically robust and thermally stable for operation in a variety of aerospace power conditioning applications. These applications demand better reliability and flexibility in the power system design as well as decreased thermal load for electronic system cooling. While power conditioning capacitors typically use polycarbonate (PC) dielectric films in wound capacitors for operation from -55 deg C to 125...
Topics: DTIC Archive, DAYTON UNIV OH RESEARCH INST, *DIELECTRIC FILMS, POLYMERS, ELECTRONIC EQUIPMENT,...
The objective of the delivery order (DO) is to develop high energy density polymer dielectrics and optimize their film processing methods for utilization in stacked or rolled capacitor architectures. An emphasis should be placed upon obtaining a material with a high energy density ( 10 J/cc), a low dissipation factor (0.001 percent) and a rapid discharge rate, all of which are stable over a wide temperature range (-55 deg C to 250 deg C), and up to high frequencies (400 kHz when packaged). A...
Topics: DTIC Archive, DAYTON UNIV RESEARCH INST (URDI) OH METALS AND CERAMICS DIV, *POLYMERIC FILMS,...
This paper describes a set of analyses and tests performed to evaluate approaches to provide a safe and robust grounding approach for the main Power Conditioning System (PCS) in the National Ignition Facility (NIF) facility presently under construction at the Lawrence Livermore National Laboratory (LLNL). The Power Conditioning System consists of up to 192 capacitor bank modules, each storing 2.2 MJ and capable of producing a peak current over 500 kA. The grounding system must minimize touch...
Topics: DTIC Archive, LAWRENCE LIVERMORE NATIONAL LAB CA, *CAPACITORS, *FLASH LAMPS, CABLES, CONSTRUCTION,...
The laser glass for the National Ignition Facility (NIF) Main Amplifier system is pumped by a system of 192 pulsed power/flash lamp assemblies. Each of these 192 assemblies consists of a 1.6 MJ (nominal) capacitor bank working with a Pre-Ionization/Lamp Check (PILC) pulser to drive an array of 40 flash lamps. This paper describes the predicted performance of these Power Conditioning System (PCS) modules in concert with flashlamp assemblies in NIF. Each flashlamp assembly consists of 20 parallel...
Topics: DTIC Archive, MAXWELL PHYSICS INTERNATIONAL SAN LEANDRO CA, *PULSE GENERATORS, AMPLIFIERS,...
The purpose of this publication is to describe the characteristics of the millipound pulsed plasma propulsion system as an aid to potential spacecraft designers and users of electric propulsion. It contains performance and interface data, design constraints, and various other considerations applicable to the implementation of the pulsed plasma propulsion system. (Author)
Topics: DTIC Archive, Huberman,M N, TRW DEFENSE AND SPACE SYSTEMS GROUP REDONDO BEACH CA, *ATTITUDE CONTROL...
The 1982 Fifteenth Power Modulator Symposium is the latest in a series beginning with the Hydrogen Thyratron Symposium in 1950. These conferences have provided early views of the evolution of devices and technologies in the modulator field. As part of the Symposium, information is presented on recent trends associated with repetition-rated pulsed modulators, including switches, auxiliary devices, energy storage, power conditioning, RF systems, accelerators, lasers and low-frequency generators.
Topics: DTIC Archive, PALISADES INST FOR RESEARCH SERVICES INC NEW YORK, *Pulse modulation, *Energy...
The purpose of this research was to determine if Air Force Bases in the Continental United States were receiving quality electrical power in accordance with ANSI C84.1. An investigation into factors influencing quality electrical power and Power Conditioning and Continuation Interface Equipment was also conducted. There were four research objectives in this effort: (1) Determine if Air Force Bases in the Continental United States are receiving quality electrical power in accordance with ANSI...
Topics: DTIC Archive, Decker, Jonathan R, AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF SYSTEMS...
The U.S. Army Strategic Defense Command (USASDC) solicited proposals for new and innovative particle beam technologies which are relevant to the Neutral Particle Beam (NPB) Program. Since high brightness beams are required for NPB and beam emittance, in large part, is determined by the ion source and low energy matching section, innovations to improve the quality or efficiency of the low energy beam transport (LEBT) are important. Some preliminary studies on radio frequency quadrupole (RFQ)...
Topics: DTIC Archive, Swenson, D A, SCIENCE APPLICATIONS INTERNATIONAL CORP (SAIC) ALBUQUERQUE NM,...
Phosphoric acid fuel cell power plants for use as tactical utility power sources have been developed. The power plants operate on 58% methanol-42% water fuel. Two fully automatic 3kW units were built, tested, and delivered. Thermal efficiency was 23% with AC and 26% with DC output. A brassboard 3kW power plant operating on neat methanol was also constructed, tested, and delivered. The methanol-water premix fuel cell power plant operates on a 1:1.3 molar mixture of methanol and water which is...
Topics: DTIC Archive, Abens, S., ENERGY RESEARCH CORP DANBURY CT, *ELECTRIC POWER PLANTS, *CARBINOLS,...
This paper shows that the large signal behavior of a popular family of high power factor ac to dc power conditioners can be analyzed via linear models, by using squared output voltage as the state variable. The state equation for a general (constant power plus resistive) load is obtained by a simple dynamic power balance. Time invariant or periodically varying controllers, acting at the time scales of the line or switching periods respectively, can then be designed from the resulting averaged...
Topics: DTIC Archive, Mahabir, K, MASSACHUSETTS INST OF TECH CAMBRIDGE LAB FOR INFORMATION AND DECISION...
This report describes the experience gained and lesson learned from the ongoing field evaluations of seven small, 2-to 20-kW wind energy conversion systems (WECS) at Navy installations located in the Southern California desert, on San Nicolas Island, in California, and in Kaneohe Bay, Hawaii. The field tests show that the WECS's bearings and yaw slip-rings are prone to failure. The failures were attributed to the corrosive environment and poor design practices. Based upon the field tests, it is...
Topics: DTIC Archive, Pal, D, NAVAL CIVIL ENGINEERING LAB PORT HUENEME CA, *ENERGY CONVERSION, *TURBINES,...
The purpose of this test is to provide evidence of production contractor conformance to contractural requirements, reveal defects of workmanship or material nature that may reduce the effective operation of these vehicles in the field and to compare existing quality with previous standards. Two M840 Dolly Sets were provided for testing. The dolly sets each consits of a front and rear dolly trailer. The sets contain air-over-hydraulic brakes, air-spring suspension, automotive type shock...
Topics: DTIC Archive, DeVito,M F, RCA CORP LANCASTER PA SSD-ELECTRO-OPTICS AND DEVICES, *MANUFACTURING,...
This final report describes the results of a 3-phase program to provide designs of lightweight, low volume power conditioning subsystems in the range of 500 kilowatts (kW) to 30 megawatts (MW) as part of the Air Force exploratory development program in high power airborne electrical power supply technology. These designs are based on presently available component technology such as solid-state switching devices, newly developed thyratrons and high energy density capacitors. Although these...
Topics: DTIC Archive, Moriarty,John J, RAYTHEON CO BEDFORD MA MISSILE SYSTEMS DIV, *HIGH POWER, *ELECTRIC...
This thesis examined three primary components of the electrical power subsystem (EPS) for the Petite Amateur Navy Satellite (PANSAT): (1) the solar array; (2) the power conditioning and control subsystem (PCCS); and (3) the batteries. The emphasis of this thesis was to analyze the output performance of the solar array. Additionally, the derivation of the hybrid PCCS proposed for the EPS was examined and the use of Nickel-Cadmium batteries as a candidate for the secondary power source was...
Topics: DTIC Archive, Hand, Gregory F, NAVAL POSTGRADUATE SCHOOL MONTEREY CA, *SOLAR CELLS, *ELECTRIC...
This report presents general information covering site wind potential and characteristics, specific design, system design, and siting requirements for utilization of wind energy conversion systems (WECS) at Navy installations. The objective of this report is also to provide a method for performing economic analysis to plan and justify a WECS in a particular Navy application. The information presented here is sufficient to enable an engineer to prepare a system's design to conduct a feasibility...
Topics: DTIC Archive, Pal,D, CIVIL ENGINEERING LAB (NAVY) PORT HUENEME CA, *WIND, *ENERGY CONVERSION, *WIND...
PARTIAL CONTENTS INCLUDE : (1) MODULATOR-RELATED TECHNOLOGY AND USER OVERVIEWS; (2) SOLID-STATE DEVICES; (3) COMMERCIAL APPLICATIONS; (4) RF SYSTEMS; (5) GAS SWITCHES AND INSULATION; (6) ADVANCES IN POWER MODULATORS; (7) ACCELERATOR SYSTEMS; AND (8) POWER CONDITIONING AND COMPONENTS.
Topics: DTIC Archive, Goldfarb, Mark, PALISADES INST FOR RESEARCH SERVICES INC ARLINGTON VA, *HIGH ENERGY...
A 60 watt portable power fuel cell system has been built operating on ambient air and hydrogen as supplied by the deactivation of lanthanum nickel hydride. The use of the endothermic hydride deactivation process in conjunction with the fuel cell considerably reduced steady state system operating temperatures. The hydride reaction was initially sustained through use of heating coil, but thereafter could be maintained at 20 C by transferring waste heat from the fuel cell.
Topics: DTIC Archive, George, Michael, ENERGY RESEARCH CORP DANBURY CT, *HYDRIDES, *AIR, *HYDROGEN, *FUEL...
This report describes the selection, sizing, and optimization of energy storage/power conditioning systems (ES/PC) for the electromagnetic propulsion systems. An ES/PC is the interface between an electromagnetic thruster and a primary power source. The ES/PC accepts the relatively low, continuous power output from the primary power source, and converts it to a series of high power pulses and delivers it to the thruster. THe ES/PC minimizes the primary power requirements while maximizing the...
Topics: DTIC Archive, Challita,A, IAP RESEARCH INC DAYTON OH, *ENERGY CONVERSION, *POWER CONDITIONING,...
Recent proposals and the literature show promise of fuel cells being commercially available in the next decade. We searched the literature to determine the current state of fuel cell technology, to determine if fuel cells can be used by the U.S. Coast Guard, and to make proposals for possible research and development efforts by the Coast Guard. Alkaline and phosphoric acid fuel cell technologies are now technically capable of full scale commercial production. Molten Carbonate and Solid Oxide...
Topics: DTIC Archive, Barrett, Tony J, COAST GUARD WASHINGTON DC OFFICE OF RESEARCH AND DEVELOPMENT, *FUEL...
The creation of the Strategic Defense Initiative Organization (SDIO) in 1983 has established a challenge to the technical community to provide the required science and engineering necessary to achieve the objectives of the SDIO. This technical challenge is present in the requirements for minimum mass, high performance power conditioning systems capable of achieving the space-based SDIO mission applications. Transformers and their related structure are major components of the power conditioning...
Topics: DTIC Archive, Swallom, Daniel W., AVCO RESEARCH LAB INC EVERETT MA, *LIGHTWEIGHT, *POWER...
Report of the design, fabrication and test of Electronic Control Unit (ECU) for Dual Mode Electro/Pneumatic Actuator. Integration tests establish control capability of ECU in both pneumatic and electric modes. Closed-loop operation fully implemented in design. Evaluation restricted to open-loop due to limited actuator performance.
Topics: DTIC Archive, Himich, James, BENDIX CORP TETERBORO NJ FLIGHT SYSTEMS DIV, *PNEUMATIC ACTUATORS,...
