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Topics: Radio Program, Politics of Scotland, Scotland, Electric power distribution, Forms of government,...
This paper will review a current research and development effort aimed at developing a small form factor cylindrical PZT Ferro Electric Generator (FEG). Two options will be discussed shaping the PZT crystal into a conic section and shaping the acoustic pulse from the explosive wave train, both techniques will be discussed in terms of ease of implementation, fabrication and performance achieved. We will also discuss corona induced failure in FEG devices and methods to mitigate this effect....
Topics: DTIC Archive, RADIANCE TECHNOLOGIES INC HUNTSVILLE AL, *ELECTRIC GENERATORS, ACOUSTIC WAVES,...
This study has focused on advanced concepts for generating high peak power, low energy, nanosecond time-scale pulses, and demonstrating that nanosecond pulsed power is an enabling technology. The project has also supported transitions of nanosecond pulsed power to important applications. Single, repetitive, and/or highly repetitive bursts of high peak power pulses can enable and/or enhance physical processes. Applications include combustion, compact, portable pulsed power generators,...
Topics: DTIC Archive, UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES, *PLASMAS(PHYSICS), IGNITION,...
Various tests according to MIL-STD-705c (608.1, 608.2, 630.1, 670.1, 701.1, 710.1, 720.1) were performed on a variety of tactical quiet generators ranging in capacity from 10kW to 100kW. The testing was performed to assess the performance impact of a new fuel. The fuel was a 50/50 volume % blend of JP-8 and HRJ-8. Although many mechanical problems occurred during testing, no direct fuel related failures were reported.
Topics: DTIC Archive, SOUTHWEST RESEARCH INST SAN ANTONIO TX TARDEC FUELS AND LUBRICANTS RESEARCH FACILITY,...
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...
EAGLE is an experimental pulse generator designed and built at Physics International Company (PI) for research in high-power switching, pulse compression, power flow, magnetic insulation, and dielectric breakdown. EAGLE is a wedge-shaped 1/20th slice (module) of ROULETTE, PI's conceptual design for a 40 to 50 TW, disk-shaped, modular accelerator designed to drive imploded plasma or particle beam loads. EAGLE's nominal design goals were a 100 ns, 2 TW, 2 MV, l MA pulse into a resistive load, or...
Topics: DTIC Archive, PHYSICS INTERNATIONAL CO SAN LEANDRO CA, *PULSE GENERATORS, *RESEARCH FACILITIES,...
This paper describes the design and test of a radiating system for impulse-like waveforms. The antenna is a 3.66 meter diameter paraboloidal reflector fed by a pair of conical TEM feed structures. The pulse generator that feeds the TEM structures incorporates an electromagnetic lens to ensure a near-ideal spherical TEM wavelaunch, and a - 120 kV, 100 atm. hydrogen switch operating in burst mode at up to 200 Hz. The antenna radiates a waveform which is the time-derivative of the double...
Topics: DTIC Archive, PULSE SCIENCES INC SAN LEANDRO CA, *WAVEFORMS, ANTENNA RADIATION PATTERNS,...
In the past decade, the feasibility of using rotating electrical machines as pulsed power supplies has been demonstrated. Tokomaks, laser-flash lamps, and electromagnetic (EM) accelerators are examples of devices successfully powered by pulsed generators. Although they are not well suited for driving all loads, i.e., very high voltages (MVs) or microsecond pulse widths, for applications that require a large amount of energy (multi-MJs) and/or field portability, pulsed generators are an...
Topics: DTIC Archive, TEXAS UNIV AT AUSTIN CENTER FOR ELECTROMECHANICS, *POWER SUPPLIES, *PULSE GENERATORS,...
Experiments were performed to determine the applicability of photoconductive semiconductor switches (PCSS) for use as output switches in subnanosecond pulse for EMP simulators. Lateral switches made of both Gallium Arsenide and Silicon with 1.5 cm long insulating regions immersed in Fluorinert were tested in a 50 ohm tri-plate transmission line geometry. Mode locked and Q-switched lasers were used to trigger both a gas switched Marx generator which pulse-charged the transmission line in 100-150...
Topics: DTIC Archive, PULSE SCIENCES INC SAN LEANDRO CA, *PHOTOCONDUCTIVITY, *SEMICONDUCTOR DEVICES,...
A staged opening switch employing both explosively driven, ruptured conductor and H.E. compressed exploding foil technology represents an attractive pulse shaping network for explosive flux compression generators (MCG). This staged system utilizes the low energy dissipation and high commandibility of an explosively ruptured cold conductor opening switch as a first stage and the fast opening time typical fuse switches as a second stage. Explosively driven ruptured conductor opening switches...
Topics: DTIC Archive, AIR FORCE WEAPONS LAB KIRTLAND AFB NM, *ELECTRIC SWITCHES, *GENERATORS, DISSIPATION,...
The inherent high energy density of explosives make them an obvious choice for pulsed power systems requiring high peak power and energy in compact packages. Ongoing research at the Air Force Research Laboratory's Directed Energy Directorate into helical explosive flux compression generators is discussed. These generators provide the initial pulsed power drive for a high voltage, long pulse system, which is the subject of a companion paper. The helical generator research described here centers...
Topics: DTIC Archive, AIR FORCE RESEARCH LAB KIRTLAND AFB NM DIRECTED ENERGY DIRECTORATE, *PULSE...
We report here results obtained from a series of plasma flow switch experiments done on the Procyon explosive pulse power generator. These experiments involved switching into a fixed inductance dummy load and also into a dynamic implosion load. The results indicated that the switch did fairly well at switching current into the load, but the results for the implosion are more ambiguous. We compare these results to calculations and discuss the implications for future plma flow switch work.
Topics: DTIC Archive, LOS ALAMOS NATIONAL LAB NM, *PLASMA OPENING SWITCHES, *PULSE GENERATORS, IMPLOSIONS,...
Three pneumatically controlled, seismic acoustic sources were evaluated at the Naval Undersea Warfare Center's Seneca Lake Test Facility during November 1992. The three acoustic sources, (a) a 1-cubic inch water gun, (b) a 10-cubic inch air gun, and (c) a 20-cubic inch air gun, were manufactured, furnished and operated by Bolt Technology Corporation of Norwalk, Connecticut These tests were conducted to examine the characteristics of the acoustic signals generated by each unit (e.g., source...
Topics: DTIC Archive, NAVAL UNDERSEA WARFARE CENTER NEWPORT DIV NEW LONDON CT NEW LONDON DETACHMENT,...
SAIC and AFRL are continuing development of an explosive flux compression generator (EFCG, or FCG) simulation code called, FCGSCA. FCGSCA is written in FORTRAN and Visual Basic and targets the Windows95@ platform. Its structure and approach has benefitted substantially from both the historic expertise and benchmarking data supplied from LANL. The code uses basic physics principles and well-known circuit analysis techniques to simulate overall FCG-system performance; in particular, it...
Topics: DTIC Archive, SCIENCE APPLICATIONS INTERNATIONAL CORP FORT WALTON BEACH FL, *CIRCUIT ANALYSIS,...
Topics: DTIC Archive, ARMY TANK AUTOMOTIVE RESEARCH DEVELOPMENT AND ENGINEERING CENTER WARREN MI, *ELECTRIC...
The Department of Defense (DoD) is increasing its demand for reliable renewable energy sources. The doubly-fed induction generator (DFIG) is widely used to extract electrical energy from wind and is a useful means for the DoD to achieve its renewable energy goals. The DFIG is susceptible to electric grid voltage harmonics, which is a potential obstacle for implementing stable wind-energy systems. Two existing rotor voltage controllers are modeled in this thesis for eventual implementation in a...
Topics: DTIC Archive, NAVAL POSTGRADUATE SCHOOL MONTEREY CA, *GENERATORS, COMPUTATIONS, CONTROL SYSTEMS,...
The Fuels and Lubricants Technology Team (FLTT) is leading the Tank Automotive Research, Development, and Engineering Center (TARDEC) program to qualify alternative fuels for use in military ground systems. These systems include tactical and combat ground vehicles, tactical generator sets, and other tactical ground systems. This is the first comprehensive report that summarizes the initial project under this program to concurrently qualify two alternative fuels. These fuels, designated in...
Topics: DTIC Archive, ARMY TANK AUTOMOTIVE RESEARCH DEVELOPMENT AND ENGINEERING CENTER WARREN MI, *FUELS,...
Interns investigated improvements for the BVM jet inlet used by the RWWV flight team.
Topics: DTIC Archive, AIR FORCE RESEARCH LAB EGLIN AFB FL MUNITIONS DIRECTORATE, *AIR FLOW, *JET ENGINE...
In Greek mythology, Procrustes was a rogue smith and bandit who invited travellers to rest in his perfectly sized bed. When they accepted, he forcibly bound them to it, then stretched them or cut off various body parts until they perfectly fit the bed. Too many organizations have a single model of high maturity to which they try to fit all their projects. Development and acquisition organizations are finding that competitive success requires systems that are a mix of high security assurance...
Topics: DTIC Archive, STEVENS INST OF TECH HOBOKEN NJ, *ACQUISITION, COMMERCIAL EQUIPMENT, COMPETITION,...
The improvement in the performance of high energy density capacitors used in pulsed power has accelerated over the past few years. This has resulted from increased research sponsored by the US Army Research Laboratory, in support of the US Military s needs. The capacitor development effort will be discussed as well as the results of both short term and long term testing of a new generation of high energy density capacitors.
Topics: DTIC Archive, GENERAL ATOMICS ELECTRONIC SYSTEMS INC SAN DIEGO CA, *CAPACITORS, *ENERGY DENSITY,...
The Plasma Electrode Pockels Cell (PEPC) subsystem is a key component of the National Ignition Facility, enabling the laser to employ an efficient four-pass main amplifier architecture. PEPC relies on a pulsed power technology to initiate and maintain plasma within the cells and to provide the necessary high voltage bias to the cells nonlinear crystals. Ultimately, nearly 300 high-voltage, high-current pulse generators will be deployed in the NIF in support of PEPC. Production of solid-state...
Topics: DTIC Archive, LAWRENCE LIVERMORE NATIONAL LAB CA, *POCKELS CELLS, ELECTRODES, LASERS, PULSE...
Finding and developing a safe and effective method for hydrogen storage is integral to its use as an alternative source of energy. The goal of the studies described in this thesis was to investigate the feasibility of developing combustible hydrogen-generating compositions based on ammonia borane and novel energetic materials such as nanocomposite and mechanically alloyed reactive materials, recently obtained by Prof. Edward Dreizin's team at the New Jersey Institute of Technology (NJIT). Such...
Topics: DTIC Archive, TEXAS UNIV AT EL PASO, *AMMONIA, *BORANES, *COMBUSTION, *OXYGEN GENERATORS,...
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...
The military's dependence on fossil fuels for electric power production in isolated settings is both logistically and monetarily expensive. Currently, the Department of Defense is actively seeking alternative methods to produce electricity, thus decreasing dependence on fossil fuels and increasing combat power. We believe piezoelectric generators have the ability to contribute to military applications of alternative electrical power generation in isolated and austere conditions. In this paper,...
Topics: DTIC Archive, NAVAL POSTGRADUATE SCHOOL MONTEREY CA, *ENERGY HARVESTING, *PIEZOELECTRIC MATERIALS,...
LONG-TERM GOAL. Sea-surface films modify the boundary conditions affecting important air-sea interfacial processes accessible by remote sensing. These processes include exchange of momentum and mass, bubble and foam stabilization, aerosol formation, and the absorbance and scattering of electromagnetic radiation. The overall goals of this research are to relate the surface properties of natural sea-surface films to their chemical composition and to predict the probable range of surface...
Topics: DTIC Archive, WOODS HOLE OCEANOGRAPHIC INSTITUTION MA, *AIR WATER INTERACTIONS, *CHEMICAL...
The Hybrid Radiation Source (HRS) is a compact pulsed power generator consisting of a commercial flash x-ray system that has been retrofitted with a custom front-end assembly, replacing a sealed glass tube1. A new high impedance (approximately 120 Ohm) space-charge-limited (SCL) diode was fielded on the HRS. This diode produces a approximately 1.6 mm diameter x-ray spot suitable for high-resolution radiography. This system has been modified by extending the diode from the generator with a...
Topics: DTIC Archive, NAVAL RESEARCH LAB WASHINGTON DC PLASMA PHYSICS DIV, *RADIOGRAPHY, ANODES, CIRCUITS,...
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,...
Antares is designed to focus 24 laser beams of 1.7-TW each onto a target of submillimeter size. Two grid-controlled electron guns and 96 laser cavities have to be energized by 10 powerful Marx generators in microseconds. During automatic alignment, 168 mirrors have to be moved. Laser energy is extracted in one nanosecond. This paper presents a concise review of the basic design parameters of the laser fusion machine and the present status of the assembly and test activities. Up-to-date test...
Topics: DTIC Archive, LOS ALAMOS NATIONAL LAB NM, *ELECTRON GUNS, *LASER BEAMS, *LASER CAVITIES, ANODES,...
The outline of a design for a liquid hydrogen cooled generator rotor that could be used to fabricate a 20 megawatt cryogenic generator is presented. The armature of an existing 20 megawatt superconducting generator could be utilized in this new cryogenic generator concept without electrical modification and with minimum modification to its housing. A hydrogen cooled aluminum rotor would eliminate requirements for helium liquefiers/refrigerators, expensive superconductors and extra vacuum and...
Topics: DTIC Archive, AIR FORCE WEAPONS LAB KIRTLAND AFB NM, *CRYOGENICS, *GENERATORS, *ROTORS, ALUMINUM,...
Deconvolution methods have been applied to measurements made with different electrical sensors including resistive and capacitive dividers. Deconvolved and directly measured waveforms have been compared with good results.
Topics: DTIC Archive, NATIONAL BUREAU OF STANDARDS GAITHERSBURG MD, *DETECTORS, *ELECTRICAL CONDUCTIVITY,...
The lower flammability limit curve for dibutyl phthalate (DBP) was determined for mass median drop diameters (MMD) from 8 to 365 microns, and the inhibitive effect of 0.7% (by volume) of gaseous bromotrifluoromethane (Freon 13B-1) was noted. Flammability tests using the large drop aerosol generator indicated an increase in lower limit flammability concentrations for mass median diameters above 200 microns, so that the curve attains a minimum value in the 100 to 200 micron MMD range. Addition of...
Topics: DTIC Archive, Miesse, C C, IIT RESEARCH INST CHICAGO IL, *AEROSOLS, *COMBUSTION, *INHIBITION,...
This report highlights a preliminary study on the anticipated problems associated with the use of standard, readily available equipment which may be used in protective shelters. The equipment under study consists of generators, air conditioners, air blowers, air filters, lighting fixtures, chemical toilets, and water pumps. The problems that need further investigation and/or testing appear to be equipment shock tolerance, the overpressure effect on operating engines, equipment cooling, and...
Topics: DTIC Archive, Gisler, Richard M, NAVAL CIVIL ENGINEERING LAB PORT HUENEME CA, *SHELTERS, *LIGHTING...
A cooled wall expansion cloud chamber and the supporting equipment and controls was developed and constructed. The purpose was to carry out a series of experiments which simulated the environmental changes occurring in the atmosphere during the formation and early development of clouds and fogs. The experiments were designed to study the microphysics and microchemistry of the processes occurring during this period. While the chamber was constructed and results show that operation of this type...
Topics: DTIC Archive, White, Daniel R, MISSOURI UNIV-ROLLA GRADUATE CENTER FOR CLOUD PHYSICS RESEARCH,...
Topics: DTIC Archive, Sipaylov,G A, FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH, *PULSE GENERATORS,...
A new scheme for radar detection and discrimination, the radar waveform synthesis method, is investigated. This scheme consists of synthesizing an aspect-independent waveform for the incident radar signal which excites an arbitrarily oriented target in such a way that the return radar signal from the target contains only a single natural resonance mode of the target in the late-time period. When the synthesized incident radar signal for exciting a particular natural mode of a known, preselected...
Topics: DTIC Archive, Chen,Kun-Mu, MICHIGAN STATE UNIV EAST LANSING DIV OF ENGINEERING RESEARCH, *RESONANCE...
A new 20-mm infantry machine gun requires a self-contained power source to fire electric-primed ammunition. An exploratory development effort has demonstrated that the motion of the gas-operated weapon can generate electric power sufficient to initiate an M52 primer. This report describes the design considerations, test model, and performance of a permanent magnet firing device used to establish feasibility.
Topics: DTIC Archive, Zangrando,Roy A, ARMY ARMAMENT RESEARCH AND DEVELOPMENT COMMAND DOVER NJ LARGE...
PROGRESS REPORT. (1) Development of Computer-Aided Design Systems. The computer aided design system being developed had been named CAESAR, for Computer-Aided Evaluation of System Architectures. It consists of four major components: Architecture Generator, Analysis and Evaluation Module, Data Base, and Locus module. (2) Organizational Designs -- Experimental Investigation of the Bounded Rationality Constraint. In this experiment, a simplified air defense task is being used to establish the...
Topics: DTIC Archive, Levis, Alexander H, MASSACHUSETTS INST OF TECH CAMBRIDGE LAB FOR INFORMATION AND...
AC and DC resonant charging hardware tests were conducted with a 15KW DOD standard 400 HZ generator as prime power. DC resonant charging caused vibrations of the generator at the pulsing frequency and instability of the voltage regulator due to the very irregular generator voltage waveform. The input DC voltage to the pulser sagged causing the performance to be lower than expected. An analysis of this problem and the theory to account for this sag is presented. Problems with the triggering of...
Topics: DTIC Archive, Silva,Jaime Roberto, AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF...
A description is given of a Hartmann-type air-jet noise generator which has been developed at RAE to aid in the assessment of airframe shielding effects. In this application, in-flight shielding experiments were performed with a slender-delta research aircraft, the Handley-Page 115, fitted with needle-stabilized generators having 19mm diameter driving jets operated from the HP turbine of the aircraft engine. The acoustic power output of the device was about 1 kW and consisted of a strong...
Topics: DTIC Archive, Holbeche,T A, ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (ENGLAND), *NOISE GENERATORS,...
A towed side-scan sonar with a 2 nautical mile (NM) range would permit a hydrographic survey ship to sweep a 4nm swath for navigation hazards. The increased track spacing made possible by such a system would result in substantial savings in ship time. A conical, rather than a fan-shaped, beam would be required in coastal waters because of the proximity of the ocean surface and floor relative to the sonar range. For isovelocity water with sufficient wave height to make insonification of the...
Topics: DTIC Archive, Moss,George J , Jr, NAVAL OCEAN RESEARCH AND DEVELOPMENT ACTIVITY NSTL STATION MS,...
The radiative lifetime for several vibrational states (v'=0-3) was measured for electronically excited BiF(AO+). The measured radiative lifetime is 1.4 micro and does not vary for the v' levels investigated. Also measured for those v' levels are the electronic quenching and V-T rate coefficients for the rare gases He and Ar at an experimental temperature of approx. 485 K. The results indicate Ar is slightly more efficient in electronic quenching than is He. For both gases the quenching rate...
Topics: DTIC Archive, Heidner,R F , III, AEROSPACE CORP EL SEGUNDO CA AEROPHYSICS LAB, *ELECTRONICS,...
A new pulsed laser discharge concept is proposed to meet military and civilian requirements for efficient operation of compact, high energy CO2 lasers. This discharge concept promises pulse lengths of up to 100 microseconds duration scalability to multi-kilojoule pulsed energy, high volumetric efficiency ( or = 50 Joules/liter-atm) and high electrical efficiency ( or = 20%). This discharge concept relies on a new method for maintaining discharge stability for long pulse durations. This new CO2...
Topics: DTIC Archive, Jacob, Jonah H, SCIENCE RESEARCH LAB INC SOMERVILLE MA, *CARBON DIOXIDE LASERS,...
This report summarizes work completed for the Air Force Aero Propulsion Laboratory in Phase I of a program entitled Superconducting Rotor Research. The objective of this program is to incorporate new materials in the design of an airborone, 20 MW, high-speed, superconducting generator. The rotor of the generator will be constructed and its current density demonstrated. The Phase I work consisted of a sizing study to select the machine configuration and dimensions, a survey of superconducting...
Topics: DTIC Archive, Gamble,B B, GENERAL ELECTRIC CORPORATE RESEARCH AND DEVELOPMENT SCHENECTADY N Y,...
In accordance with reference (a), development of sonar dome coating systems which will have good erosion resistance and anti-fouling properties and be able to withstand exposure to high level pulse fields generated by current high power sonar systems, is continuing at the U.S. Naval Applied Science Laboratory. As part of the overall program, preliminary evaluations are being made of commercially available coatings using the Ultrasonic Tank Test and the NASL Cavitating Disk Apparatus described...
Topics: DTIC Archive, Petito,N J, NAVAL APPLIED SCIENCE LAB BROOKLYN N Y, *PROTECTIVE COATINGS, *SONAR...
An intense relativistic electron beam environment has been developed for material characterization. Experimental results on the magnetic compression and expansion of intense beams are presented and compared with theoretical models; emphasis is given to transport efficiency, electron angular distributions, and beam uniformity. Diode energies of 75 kJ are achieved (DNA OWL 2 generator) with greater than 80 percent transport efficiency using a magnetic compression ratio of three. Experimental...
Topics: DTIC Archive, Darkin,D, PHYSICS INTERNATIONAL CO SAN LEANDRO CALIF, *ELECTRON BEAMS, COMPRESSION,...
This report describes Czochralski growth experiments on a production process for Nd:YAG boules. At program start most production techniques gave a boule about 1.25 - 1.50 inch diameter and 5 - 7 inches long. A goal of 2 inches in diameter, with similar length and quality, would nearly double laser rod yield for many Army programs. All experiments were performed on standard growth stations in a production facility.
Topics: DTIC Archive, Uhrin, R., LITTON SYSTEMS INC MORRIS PLAINS NJ AIRTRON DIV, *MANUFACTURING, *CRYSTAL...
This report documents the design and operation of the particle beam alignment system developed for single event upset - Van de Graaff experiments. This system is designed to provide a faster and more accurate optical alignment of the pinhole and the device under test. In this alignment system a laser beam is focused on the device under test, and the pinhole is then aligned with the laser beam using an electronic display. In this way the pinhole is aligned over the device under test. The...
Topics: DTIC Archive, Corson, Michael R, PHYSICAL SCIENCES INC ALEXANDRIA VA, *ALIGNMENT, *VAN DE GRAAFF...
Under the support of this equipment grant, the facilities of the Plasma laboratory of the Institute used for an on-going research program funded by the AFOSR have been upgraded. Our research program bears the scientific goal to develop a high power, compact microwave device carrying good output efficiency. A cusptron device is thus designed to fir the requirements, This device utilizes the negative mass instability for the resonant interaction between an axis-encircling electron beam and the...
Topics: DTIC Archive, Kuo, Spencer P, POLYTECHNIC INST OF NEW YORK FARMINGDALE WEBER RESEARCH INST,...
Studies at the Short-term Prediction Research and Transition (SPORT) Center have suggested that the use of Moderate Resolution Imaging Spectroradiometer (MODIS) sea-surface temperature (SST) composites in regional weather forecast models can have a significant positive impact on short-term numerical weather prediction in coastal regions. Recent work by LaCasse et al (2007, Monthly Weather Review) highlights lower atmospheric differences in regional numerical simulations over the Florida...
Topics: NASA Technical Reports Server (NTRS), MODIS (RADIOMETRY), NUMERICAL WEATHER FORECASTING, SEA...
NASA has had a long history of research and development in the field of superalloys. These efforts have continued today, where the latest advancements in turbine disk and blade technologies are being developed Although NASA does support military flight systems, it s predominant role is in supporting civilian air transportation systems, and thus has goals for improving fuel efficiency, emissions, noise, and safety of today s aircraft. NASA has traditionally served several distinct but...
Topics: NASA Technical Reports Server (NTRS), HEAT RESISTANT ALLOYS, SUPPORT SYSTEMS, ELECTRIC GENERATORS,...
