281
281
Jul 21, 2010
07/10
by
Achtemeier, G. L
texts
eye 281
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Since late 1982 NASA has supported research to develop a numerical variational model for the diagnostic assimilation of conventional and space-based meteorological data. In order to analyze the model components, four variational models are defined dividing the problem naturally according to increasing complexity. The first of these variational models (MODEL I), the subject of this report, contains the two nonlinear horizontal momentum equations, the integrated continuity equation, and the...
Topics: ENGINE TESTING LABORATORIES, FLIGHT SIMULATORS, PROPULSION SYSTEM PERFORMANCE, TECHNOLOGY...
265
265
May 31, 2011
05/11
by
Adamovsky, Grigory; Lekki, John; Lock, James A
texts
eye 265
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The dynamic response of a fiber optic Bragg grating to mechanical vibrations is examined both theoretically and experimentally. The theoretical expressions describing the consequences of changes in the grating's reflection spectrum are derived for partially coherent beams in an interferometer. The analysis is given in terms of the dominant wavelength, optical bandwidth, and optical path difference of the interfering signals. Changes in the reflection spectrum caused by a periodic stretching and...
Topics: PLASMA HEATING, MERCURY SPACECRAFT, RADIOACTIVE WASTES, PLASMAS (PHYSICS), TECHNOLOGY UTILIZATION,...
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300
May 31, 2011
05/11
by
Aftosmis, M. J.; Delanaye, M.; Haimes, R
texts
eye 300
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This paper presents an approach for the generation of closed manifold surface triangulations from CAD geometry. CAD parts and assemblies are used in their native format, without translation, and a part's native geometry engine is accessed through a modeler-independent application programming interface (API). In seeking a robust and fully automated procedure, the algorithm is based on a new physical space manifold triangulation technique which was developed to avoid robustness issues associated...
Topics: REMOTELY PILOTED VEHICLES, FLIGHT SIMULATORS, ALGORITHMS, RUNWAYS, BOUNDARIES, AUTONOMY
334
334
Jun 2, 2011
06/11
by
Aggarwal, Shi
texts
eye 334
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Modern flight control research has improved spacecraft survivability as its goal. To this end we need to have a failure detection system on board. In case the spacecraft is performing imperfectly, reconfiguration of control is needed. For that purpose we need to have parameter identification of spacecraft dynamics. Parameter identification of a system is called system identification. We treat the system as a black box which receives some inputs that lead to some outputs. The question is: what...
Topics: AIRCRAFT LANDING, COCKPITS, FLIGHT PATHS, LATERAL CONTROL, COOPER-HARPER RATINGS, WIND DIRECTION,...
435
435
Jun 2, 2011
06/11
by
Alena, Richard L.; Ossenfort, John; Lee, Charles; Walker, Edward; Stone, Tho
texts
eye 435
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The Mobile Exploration System Project (MEX) at NASA Ames Research Center has been conducting studies into hybrid communication networks for future planetary missions. These networks consist of space-based communication assets connected to ground-based Internets and planetary surface-based mobile wireless networks. These hybrid mobile networks have been deployed in rugged field locations in the American desert and the Canadian arctic for support of science and simulation activities on at least...
Topics: AIRCRAFT PILOTS, PILOT PERFORMANCE, WAKEFULNESS, SLEEP DEPRIVATION, REST, ALERTNESS, FLIGHT...
328
328
Sep 20, 2010
09/10
by
Alewine, Neal Jo
texts
eye 328
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Multiple instruction rollback (MIR) is a technique to provide rapid recovery from transient processor failures and was implemented in hardware by researchers and slow in mainframe computers. Hardware-based MIR designs eliminate rollback data hazards by providing data redundancy implemented in hardware. Compiler-based MIR designs were also developed which remove rollback data hazards directly with data flow manipulations, thus eliminating the need for most data redundancy hardware....
Topics: BOOSTER ROCKET ENGINES, DYNAMIC TESTS, ENVIRONMENT SIMULATORS, GAS FLOW, HIGH TEMPERATURE GASES,...
293
293
Jul 11, 2010
07/10
by
Aoyagi, K.; Falarski, M. D.; Koenig, D. G
texts
eye 293
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Investigations were conducted in the Ames 40- by 80-Foot Wind Tunnel to determine the aerodynamic characteristics of a large-scale subsonic jet transport model with an upper surface blown flap system. The model had a 25 deg swept wing of aspect ratio 7.28 and four turbofan engines. The lift of the flap system was augmented by turning the turbofan exhaust over the Coanda surface. Results were obtained for several flap deflections with several wing leading-edge configurations at jet momentum...
Topics: AUTOMATIC PILOTS, DIGITAL SIMULATION, V/STOL AIRCRAFT, DEGREES OF FREEDOM, DYNAMIC CONTROL, FLIGHT...
1,011
1.0K
Jul 26, 2010
07/10
by
Arbit, H. A.; Tuegel, L. M.; Dodd, F. E
texts
eye 1,011
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The Heavy Hydrocarbon Main Injector Program was an analytical, design, and test program to demonstrate an injection concept applicable to an Isolated Combustion Compartment of a full-scale, high pressure, LOX/RP-1 engine. Several injector patterns were tested in a 3.4-in. combustor. Based on these results, features of the most promising injector design were incorporated into a 5.7-in. injector which was then hot-fire tested. In turn, a preliminary design of a 5-compartment 2D combustor was...
Topics: ATOMIC BEAMS, MASS SPECTROMETERS, NEUTRAL ATOMS, QUADRUPOLES, REAL TIME OPERATION, EARTH ORBITAL...
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239
Dec 7, 2009
12/09
by
Arden Wilfong
image
eye 239
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Jerrie Cobb, a well known female pilot in the 1950s, testing Gimbal Rig in the Altitude Wind Tunnel, AWT in April 1960. The Gimbal Rig, formally called MASTIF or Multiple Axis Space Test Inertia Facility, was used to train astronauts to control the spin of a tumbling spacecraft. Jerrie Cobb was the first female to pass all three phases of the Mercury Astronaut Program but NASA rules stipulated that only military test pilots could become astronauts and there were no female military test pilots....
Topics: Women, VIPs-People at NASA-NACA, Simulators, What -- Mercury, Where -- Glenn Research Center (GRC)
Source: http://grin.hq.nasa.gov/ABSTRACTS/GPN-2000-000379.html
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267
Jun 21, 2010
06/10
by
Argoud, M. J
texts
eye 267
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Design, and instrumentation of modified space environment simulator for spacecraft testing
Topics: MEASURING INSTRUMENTS, SPACE ENVIRONMENT SIMULATION, SPACECRAFT CONTROL, STRUCTURAL DESIGN, SPACE...
This video showcases an interview about the sun machine. A machine that basically simulates the sun all year. Every month and almost every time you want. It helps to determine weather, shades, shadows, and more. A sun simulator machine. The video also shows the machine working. If you have more information about this video, please email us at aulibraries@gmail.com
Topics: Auburn University Tiger Giving Day 2021, Interview, Sun Machine, Machines, Sun, Shades, Shadows,...
397
397
May 31, 2011
05/11
by
Avallone, Linne
texts
eye 397
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At the time this proposal was submitted, recent publications had suggested an important role for transport of midlatitude air into the tropical lower stratosphere. Most of these studies had employed data that gave only a time-averaged picture, making it difficult to determine the nature of the transport processes responsible for the observed behavior. We proposed to analyze observations of long-lived trace gases, such as nitric acid, methane, nitrous oxide, and chlorofluorocarbons, made from...
Topics: AIR TRAFFIC, DISPLAY DEVICES, FLIGHT PATHS, AIRCRAFT INSTRUMENTS, FLIGHT INSTRUMENTS, COCKPITS,...
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225
Jul 6, 2010
07/10
by
BESSONOV, A
texts
eye 225
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THE OPERATION AND ACCOMPLISHMENTS OF THE LUNOKHOD 1 LUNAR ROVER VEHICLE ARE DISCUSSED. THE LUNAR ROVER OPERATED FOR A PERIOD OF TEN AND A HALF MONTHS IN THE LUNAR GEOGRAPHICAL AREA CALLED THE SEA OF RAINS. THE COMMUNICATIONS CONTACTS, INSTRUMENT OPERATION, DATA ACQUISITION, DATA TRANSMISSION, AND THE OBJECTIVES OF THE SCIENTIFIC PROGRAM ARE DESCRIBED. SAMPLES OF SOME OF THE DATA OBTAINED DURING THE OPERATION OF LUNOKHOD 1 ARE INCLUDED.
Topics: ATMOSPHERES, FIRE PREVENTION, PERFLUORO COMPOUNDS, CONFERENCES, LIFE SUPPORT SYSTEMS, SPACE...
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154
Jul 6, 2010
07/10
by
BILLIG, H
texts
eye 154
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THE REQUIREMENTS OF THE FEDERAL POST OFFICE FOR MORE TELEVISION PROGRAMS IN THE FORSEEABLE FUTURE CAN BE MET BY A SATELLITE TELEVISION SYSTEM. THIS IS PARTICULARLY ATTRACTIVE IN COMBINATION WITH LOCAL CABLE SYSTEMS.
Topics: BREATHING, OXYGEN METABOLISM, PERFORMANCE, SIMULATORS, SYSTEMS ENGINEERING, AUTOMATIC TEST...
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193
Jul 26, 2010
07/10
by
Bachalo, W.; Smith, J.; Rudoff, R
texts
eye 193
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A compact and rugged probe based on the phase Doppler method was evaluated as a means for characterizing icing clouds using airborne platforms and for advancing aircraft icing research in large scale wind tunnels. The Phase Doppler Particle Analyzer (PDPA) upon which the new probe was based is now widely recognized as an accurate method for the complete characterization of sprays. The prototype fiber optic-based probe was evaluated in simulated aircraft icing clouds and found to have the...
Topics: COMPUTERIZED SIMULATION, EDUCATION, PAYLOAD STATIONS, PAYLOADS, SPACE STATIONS, TRAINING...
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229
May 31, 2011
05/11
by
Bailey, Sheila; Raffaelle, Ryne; Emery, Keit
texts
eye 229
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A historical view of the research and development in photovoltaics from the perspective of both the terrestrial and the space communities is presented from the early days through the '70s and '80s and the '90s and beyond. The synergy of both communities in the beginning and once again in the present and hopefully future are highlighted, with examples of the important features in each program. The space community which was impressed by the light-weight and reliability of photovoltaics drove much...
Topics: AUTONOMY, INTERNATIONAL SPACE STATION, MICROGRAVITY, PROTOTYPES, DEGREES OF FREEDOM, RESEARCH AND...
488
488
Sep 20, 2010
09/10
by
Baker, Robert L
texts
eye 488
favorite 1
comment 0
The objective of the Multi-Path Redundant Avionics Suite (MPRAS) program is the development of a set of avionic architectural modules which will be applicable to the family of launch vehicles required to support the Advanced Launch System (ALS). To enable ALS cost/performance requirements to be met, the MPRAS must support autonomy, maintenance, and testability capabilities which exceed those present in conventional launch vehicles. The multi-path redundant or fault tolerance characteristics of...
Topics: CERTIFICATION, COCKPIT SIMULATORS, FLIGHT SIMULATORS, HELICOPTERS, PILOT TRAINING, TRAINING...
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270
Jun 13, 2011
06/11
by
Banks, Daniel W.; Fisher, David F
texts
eye 270
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Free-flight tests of a large-scale lifting-body configuration, the X-38 aircraft, were conducted using tufts to characterize the flow on the aft end, specifically in the inboard region of the vertical fins. Pressure data was collected on the fins and base. Flow direction and movement were correlated with surface pressure and flight condition. The X-38 was conceived to be a rescue vehicle for the International Space Station. The vehicle shape was derived from the U.S. Air Force X-24 lifting...
Topics: FLIGHT CHARACTERISTICS, AIRCRAFT PILOTS, WAKEFULNESS, SCHEDULES, COMMERCIAL AIRCRAFT, FLIGHT...
317
317
Aug 2, 2010
08/10
by
Bansal, Narottam P
texts
eye 317
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comment 0
The available studies on the synthesis of high T sub c superconductors (HTS) via the glass precursor approach were reviewed. Melts of the Bi-Sr-Ca-Cu-O system as well as those doped with oxides of some other elements (Pb, Al, V, Te, Nb, etc.) could be quenched into glasses which, on further heat treatments under appropriate conditions, crystallized into the superconducting phase(s). The nature of the HTS phase(s) formed depends on the annealing temperature, time, atmosphere, and the cooling...
Topics: ADA (PROGRAMMING LANGUAGE), ENCAPSULATING, MODULARITY, SPACECRAFT ORBITS, THEORETICAL PHYSICS,...
222
222
May 31, 2011
05/11
by
Barhydt, Richard; Hansman, R. John, Jr
texts
eye 222
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Intent information provides knowledge of another aircraft's current and future trajectory states. Prototype traffic displays were designed for four different levels of intent: No Intent, Rate, Commanded State, and Flight Management System (FMS)-Path. The TCAS Display was used as a baseline and represents the No Intent Level. The Rate, Commanded State, and FMS-Path Displays show increasing levels of intent information using TCAS-like symbology in addition to incorporating a conflict probe and...
Topics: AUTOMATIC PILOTS, AIRCRAFT PILOTS, ALERTNESS, FLIGHT CONTROL, COCKPITS, AERONAUTICS, SYSTEMS...
387
387
May 6, 2010
05/10
by
Barnett, R. M.; Thiele, C
texts
eye 387
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comment 0
Advanced solar simulator - space environment reproduction
Topics: AEROSPACE ENVIRONMENTS, ENVIRONMENT SIMULATION, SOLAR SIMULATORS, ENVIRONMENT SIMULATION, SOLAR...
444
444
Jun 12, 2011
06/11
by
Basilevsky, A. T.; Neukam, G.; Ivanov, B. A.; Werner, S. C.; vanGesselt, S.; Head, J. W.; Hauber, E., et al
texts
eye 444
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This study is based on the geological analysis of the HRSC images taken on the orbit 0143 (12 m/px in nadir channel). The study area includes the western segment of Olympus Mons and the adjacent lowland plains (Fig. 1). Part of the volcano above the scarp is rather flat and is called ''summit plateau'' below. What is often called the volcano scarp is a slope classified into three morphologic types: Type 1 (S1 in Fig.1) is the steepest and dominated by ravines in its upper part and by talus...
Topics: CHINA, AIRLINE OPERATIONS, HEURISTIC METHODS, DECISION MAKING, SITUATIONAL AWARENESS, COGNITIVE...
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219
Aug 2, 2010
08/10
by
Basili, Victor R
texts
eye 219
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Software engineering researchers are building tools, defining methods, and models; however, there are problems with the nature and style of the research. The research is typically bottom-up, done in isolation so the pieces cannot be easily logically or physically integrated. A great deal of the research is essentially the packaging of a particular piece of technology with little indication of how the work would be integrated with other prices of research. The research is not aimed at solving...
Topics: AIRCRAFT MANEUVERS, FLIGHT SIMULATORS, GENERAL AVIATION AIRCRAFT, ATTITUDE (INCLINATION),...
339
339
May 30, 2011
05/11
by
Batchelor, Davi
texts
eye 339
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New semi-classical models of virtual antiparticle pairs are used to compute the pair lifetimes, and good agreement with the Heisenberg lifetimes from quantum field theory (QFT) is found. When the results of the new models and QFT are combined, formulae for e and alpha(sub s)(q) are derived in terms of only h and c. The modeling method applies to both the electromagnetic and color forces. Evaluation of the action integral of potential field fluctuation for each interaction potential yields...
Topics: HELMET MOUNTED DISPLAYS, H-60 HELICOPTER, NIGHT VISION, AIRCRAFT PILOTS, DEGREES OF FREEDOM,...
518
518
Jul 12, 2010
07/10
by
Bayliss, A.; Goldstein, C. I.; Turkel, E
texts
eye 518
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The Helmholtz Equation (-delta-K(2)n(2))u=0 with a variable index of refraction, n, and a suitable radiation condition at infinity serves as a model for a wide variety of wave propagation problems. A numerical algorithm was developed and a computer code implemented that can effectively solve this equation in the intermediate frequency range. The equation is discretized using the finite element method, thus allowing for the modeling of complicated geometrices (including interfaces) and...
Topics: ATTITUDE INDICATORS, COMPUTER SYSTEMS PROGRAMS, FAULT DETECTION, MICROCOMPUTERS, MODULES,...
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242
May 31, 2011
05/11
by
Becker, Jef
texts
eye 242
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The NASA Ames wind tunnel customers are one of the first users of the Information Power Grid (IPG) storage system at the NASA Advanced Supercomputing Division. We wanted to be able to store their data on the IPG so that it could be accessed remotely in a secure but timely fashion. In addition, incorporation into the IPG allows future use of grid computational resources, e.g., for post-processing of data, or to do side-by-side CFD validation. In this paper, we describe the integration of grid...
Topics: AUTONOMY, PROGRAM VERIFICATION (COMPUTERS), SYSTEMS ENGINEERING, MODELS, FEEDBACK CONTROL, MODULES,...
34
34
Mar 14, 2021
03/21
by
Bellevue University
audio
eye 34
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Welcome to Byte Fight Episode 2! In this episode, Emily and Sierra duke it out in a battle for the ages. The topic this month centers around the farming simulators: Harvest Moon versus Stardew Valley . With only five minutes to spare, these two must convince you , the audience, of who's right and who's wrong. Who wins? Well, that's up for you to decide!
Topics: Farming Simulators, Stardew Valley, Harvest Moon, Video Games, Media
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623
Jun 9, 2011
06/11
by
Bennett, Robert M.; Edwards, John W
texts
eye 623
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The motivation for Computational Aeroelasticity (CA) and the elements of one type of the analysis or simulation process are briefly reviewed. The need for streamlining and improving the overall process to reduce elapsed time and improve overall accuracy is discussed. Further effort is needed to establish the credibility of the methodology, obtain experience, and to incorporate the experience base to simplify the method for future use. Experience with the application of a variety of...
Topics: MOTION SIMULATORS, FLIGHT SIMULATORS, ALGORITHMS, ANGULAR ACCELERATION, ANGULAR VELOCITY,...
304
304
May 23, 2011
05/11
by
Bers, A.; Ram, A. K
texts
eye 304
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The research carried out on this three-year grant was on the space-time evolution of electron cyclotron maser-like electromagnetic instabilities. Specifically, the work was aimed at understanding the conditions for the emission of radiation at the fundamental of and the harmonics of the electron cyclotron frequency. This was done with the purpose of explaining the observed features of auroral kilometric radiation (AKR). Our research also included work on the nonlinear evolution of the three...
Topics: SOLAR CELLS, HALOGENS, TUNGSTEN, LUMINAIRES, SOLAR SIMULATORS, QUANTUM EFFICIENCY, TECHNOLOGY...
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303
May 30, 2011
05/11
by
Bhatia, A. K.; Landi, E
texts
eye 303
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Electron impact collision strengths, energy levels, oscillator strengths and spontaneous radiative decay rates are calculated for Ni XXI. The configurations used are 2s(sup 2)2p(sup 4), 2s2p(sup 5), 2p(sup 6), 2s(sup 2)2p(sup 3)3s, and 2s(sup 2)3p(sup 3)3d giving rise to 58 fine-structure levels in intermediate coupling. Collision strengths are calculated at five incident energies, 85, 170, 255, 340, and 425 Ry. Excitation rate coefficients are calculated by assuming a Maxwellian electron...
Topics: FLIGHT SIMULATORS, VERTICAL MOTION SIMULATORS, PILOT PERFORMANCE, ACCURACY, FEEDBACK CONTROL, FUZZY...
354
354
Jun 17, 2010
06/10
by
Biesiadny, T. J.; Coltrin, R. J.; Livingood, J. N. B.; Powers, A. G.; Rudey, R. A.; Straight, D. M
texts
eye 354
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Nuclear reactor simulator test - liquid hydrogen run, instrumentation and data acquisition system operational procedure checkout
Topics: CHECKOUT, DATA ACQUISITION, FLIGHT TEST, INSTRUMENTATION, LIQUID HYDROGEN, REACTOR, SIMULATOR, DATA...
123
123
Dec 7, 2009
12/09
by
Bill Bowles
image
eye 123
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comment 0
MASTIF - Multiple Axis Space Test Inertia Facility - was developed for Project Mercury to train astronauts in gaining control over a spacecraft that could move in multiple directions at once--pitching, rolling and yawing all at the same time. This photo is similar to photo GPN-2000-001186, but not identical.
Topics: Mercury-Program, Simulators, What -- Mercury
Source: http://grin.hq.nasa.gov/ABSTRACTS/GPN-2000-000385.html
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364
May 6, 2010
05/10
by
Bioletti, C
texts
eye 364
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comment 0
Simulation apparatus for entry of long-range ballistic missiles into earth atmosphere
Topics: ATMOSPHERIC ENTRY, SIMULATION, BALLISTIC MISSILES, EARTH ATMOSPHERE, SIMULATION, SIMULATORS,...
768
768
Jun 1, 2011
06/11
by
Bjorkman, Gerry; Cantrell, Mark; Carter, Rober
texts
eye 768
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Friction stir welding is an innovative weld process that continues to grow in use, in the commercial, defense, and space sectors. It produces high quality and high strength welds in aluminum alloys. The process consists of a rotating weld pin tool that plasticizes material through friction. The plasticized material is welded by applying a high weld forge force through the weld pin tool against the material during pin tool rotation. The high weld forge force is reacted against an anvil and a...
Topics: AIRCRAFT ICING, AIRCRAFT MODELS, DE HAVILLAND AIRCRAFT, FLIGHT SIMULATION, FLIGHT SIMULATORS,...
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217
May 21, 2011
05/11
by
Bokhari, Shahid H
texts
eye 217
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Parametric Binary Dissection (PBD) is a new algorithm that can be used for partitioning graphs embedded in 2- or 3-dimensional space. It partitions explicitly on the basis of nodes (lambda)x(edges cut), where lambda is the ratio of time to communicate over an edge to the time to compute at a node. The new algorithm is faster than the original binary dissection algorithm and attempts to obtain better partitions than the older algorithm, which only takes nodes into account. The performance of...
Topics: MICROWAVE SCATTERING, PROBABILITY THEORY, SCATTEROMETERS, OCEAN SURFACE, RAIN, WIND MEASUREMENT,...
73
73
Jan 5, 2019
01/19
by
Bonanni, Pete
texts
eye 73
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comment 0
xiii, 208 pages : 24 cm
Topics: F-19 Stealth (Computer program), Computer war games, Fighter plane combat -- Computer simulation,...
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350
Jun 1, 2011
06/11
by
Bowen, Brent D.; Box, Richard C.; Fink, Mary M.; Gogos, Geroge; Lehrer, Henry R.; Narayanan, Ram M.; Nickerson, Jocelyn S.; Tarry, Scott E.; Vlasek, Karisa D
texts
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The Aeronautics Education, Research, and Industry Alliance (AERIAL): a comprehensive, multi-faceted NASA EPSCoR 2000 initiative, contributes to the strategic research and technology priorities of NASA while intensifying Nebraska s rapidly growing aeronautics research and development endeavors. AERIAL enables Nebraska researchers to: (a) continue strengthening their collaborative relationships with NASA Field Centers, Codes, and Enterprises; (b) increase the capacity of higher education...
Topics: PERSONAL COMPUTERS, FLIGHT SIMULATORS, DISPLAY DEVICES, PILOT TRAINING, LOW COST, REAL TIME...
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137
Jun 17, 2010
06/10
by
Bowman, G. H
texts
eye 137
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comment 0
No Abstract Available
Topics: CATCHERS, SIMULATORS
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428
May 6, 2010
05/10
by
Bowman, G. H.; Savin, R. C
texts
eye 428
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Investigation in atmosphere entry simulator of nylon as ablative material for ballistic missiles
Topics: ABLATION, NYLON, REENTRY, ABLATIVE MATERIALS, ATMOSPHERIC ENTRY, BALLISTIC MISSILES, NYLON...
The motivation for using Flight Training Synthetic Environment Technology (FTSET) in military aviation is to create a cost-efficient and a risk-managed training environment. However, deciding on the appropriate mix of synthetic versus actual flight training remains a great unresolved issue. Further, FTSET usage and its adoption level may vary across the aviation community and flight training curricula. TUAA has employed FTSET in helicopter flight training since 1990. Since then, it has...
Topics: Culture., Flight Training Synthetic Environment Technology (FTSET), Flight Training Curriculum,...
452
452
May 27, 2011
05/11
by
Branstetter, J. Rober
texts
eye 452
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Net radiant heat flow between two infinite, parallel, tungsten plates was computed by summing the monochromatic energy exchange; the results are graphically presented as a function of the temperatures of the two surfaces. In general these fluxes range from approximately a to 25 percent greater than the results of gray-body computations based on the same emissivity data. The selection of spectral emissivity data and the computational procedure are discussed. The present analytical procedure is...
Topics: CIRCULAR ORBITS, LUNAR FLIGHT, DEGREES OF FREEDOM, MEASURING INSTRUMENTS, TORQUE, DISPLAY DEVICES,...
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360
Jul 12, 2010
07/10
by
Bray, R. S
texts
eye 360
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The total experience for evidence regarding the levels of motion and visual cueing fidelity required for handling-qualities research in ground-based simulators is reviewed. Positive contributions of cockpit motion were identified, but much remains to be learned regarding the sensitivities of individual control modes to cueing attenuation. A firmer understanding of the pilot's utilization of visual and motion cues is the key to more efficient use of simulation in helicopter control-systems...
Topics: AIRCRAFT MANEUVERS, FLIGHT SIMULATORS, FUEL CONTROL, FUEL INJECTION, CONTROLLABILITY, DYNAMIC...
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175
Jul 12, 2010
07/10
by
Bromage, G. E.; Tanzi, E. G; Boksenberg, A.; Clavel, J. C.; Elvius, A.; Demoulin-Ulrich, M. H.; Penston, M. V.; Perola, G. C.; Pettini, M.; Snijders, M. A. J.
texts
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The Seyfert nucleus of NGC 4151 was monitored for six years, including periods of intensive study of the complex variations in the ultraviolet spectra with IUE. Important IUE results relating to the broad line region (BLR) and its physical conditions are reviewed herein. Active galactic nuclei like NGC 4151 are studied to derive detailed constraints on radiation mechanisms and physical conditions in the emission region, and hence also constraints on possible central power sources. The...
Topics: FLIGHT SIMULATORS, FLIGHT TRAINING, AIRCRAFT INSTRUMENTS, AIRCRAFT SAFETY, COMPUTERS, FLIGHT...
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155
May 31, 2011
05/11
by
Bryson, Stev
texts
eye 155
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This viewgraph presentation describes decisions made at the NASA Ames Research Center during its development of a virtual windtunnel to assist humans in visualizing computational fluid dynamics simulations. User requirements for the system include the simulation of vortical structure, pressure distribution, and overall sense of flow. In addition, the system needs to support a variety of interfaces, excluding head mounts, and needs to use an object oriented approach. Direct manipulation of the...
Topics: ATTITUDE CONTROL, ORBITAL RENDEZVOUS, DEGREES OF FREEDOM, RENDEZVOUS SPACECRAFT, ELLIPTICAL ORBITS,...
The Network simulator helps the developer to create and simulate new models on an arbitrary network by specifying both the behavior of the network nodes and the communication channels. It provides a virtual environment for an assortment of desirable features such as modeling a network based on a specific criteria and analyzing its performance under different scenarios. This saves cost and time required for testing the functionality and the execution of network. This paper has surveyed various...
Topics: Open-Source Technology, Network Simulation, Open Source Network simulators, NS2, NS3, J-Sim,...
Outside of Bunker Hills Golf Club, the links are quiet this time of year, covered in a blanket of snow. But inside the clubhouse is where the fun is. Four new golf simulators, installed in December, are keeping die-hard golfers like Darryl Rangel of Blaine happy during the winter months. "You can set your tee box, you get almost as real as you can possibly get when it comes to simulator golf," Rangel said. The aboutGOLF brand simulators come complete with new screens and computers,...
Topics: Minnesota, Coon Rapids, CTN Coon Rapids, CTN, Public Access TV, Community Media, PEG, Youtube, ctn,...
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856
Jun 26, 2010
06/10
by
Campbell, D. T.; Mehegan, P. F.; Scheuerman, C. H
texts
eye 856
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comment 0
Gas augmented rocket engine injectors using high energy gas
Topics: ELECTRONIC EQUIPMENT, SIMULATORS, SOLAR CELLS, SYSTEMS ENGINEERING, COMPUTERIZED SIMULATION, POWER...
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317
May 6, 2010
05/10
by
Cassetti, M. D.; Mercer, C. E.; Norton, H. T., Jr
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Test of divergent ejector, jet exhaust from h202 turbojet simulator
Topics: AFTERBURNING, JET EXHAUST, TURBOJET ENGINE, EJECTORS, HYDROGEN PEROXIDE, JET EXHAUST, MACH NUMBER,...
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361
Jun 1, 2011
06/11
by
Chaban, Galina M.; Xantheas, Sotiris; Gerber, R. Benn
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We report anharmonic vibrational spectra (fundamentals, first overtones) for the F-(H(sub 2)O) and F-(H(sub 2)O)2 clusters computed at the MP2 and CCSD(T) levels of theory with basis sets of triple zeta quality. Anharmonic corrections were estimated via the correlation-corrected vibrational self-consistent field (CC-VSCF) method. The CC-VSCF anharmonic spectra obtained on the potential energy surfaces evaluated at the CCSD(T) level of theory are the first ones reported at a correlated level...
Topics: AUTONOMY, INTERNATIONAL SPACE STATION, MICROGRAVITY, NAVIGATION, PLANNING, SIMULATORS, TEST...
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505
May 29, 2011
05/11
by
Challa, M.; Natanson, G.; Ottenstein, N
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A deterministic algorithm and a Kalman filter for gyroless spacecraft are used independently to estimate the three-axis attitude and rates of rapidly spinning spacecraft using only magnetometer data. In-flight data from the Wide-Field Infrared Explorer (WIRE) during its tumble, and the Fast Auroral Snapshot Explorer (FAST) during its nominal mission mode are used to show that the algorithms can successfully estimate the above in spite of the high rates. Results using simulated data are used to...
Topics: PILOT TRAINING, PILOT PERFORMANCE, FLIGHT FATIGUE, PSYCHOPHYSIOLOGY, EVOKED RESPONSE...
