305
305
Jun 17, 2010
06/10
by
Koelle, H. H
texts
eye 305
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No Abstract Available
Topics: SPACE TRANSPORTATION SYSTEM, TRENDS
The baseline products, schedules, and resource requirements for the Mission Planning and Analysis Division's support of Space Transportation System flights 2, 3, and 4 are presented. Major functions addressed are: orbiter software, Mission Control Center software, flight design, flight operations support, simulation tools, and postflight analysis.
Topics: NASA Technical Reports Server (NTRS), MISSION PLANNING, SPACE TRANSPORTATION SYSTEM 2 FLIGHT, SPACE...
The emergence of the next generation containerships (mega ships) and global shipping line alliances will bring about fundamental changes in the operational framework and infrastructure of many U.S. ports. By all indications the end result will be more a streamlined and competitive container industry where ocean carriers will operate with load center and feeder port configurations. For many ports, this new environment will dictate addressing the problems of inefficiencies in productivity,...
Topics: Defense Transportation System, Deployment, Logistics, Mobilization
273
273
Jun 26, 2011
06/11
by
NON
texts
eye 273
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An improved efficiency arcjet thruster has a constrictor and electrically-conductive nozzle anode defining an arc chamber, and an electrically-conductive rod having a tip spaced upstream from the constrictor and defining a cathode spaced from the anode by a gap generally coextensive with the arc chamber. An electrical potential is applied to the anode and cathode to generate an electrical arc in the arc chamber from the cathode to anode. Catalytically decomposed hydrazine is supplied to the arc...
Topics: ELECTRIC CONNECTORS, PYROTECHNICS, SPACE TRANSPORTATION SYSTEM, PATENTS
The purpose of this thesis is to determine if the Navy is receiving sufficient services to support the cost and manner in which the QUICKTRANS contract is managed. It reviews the current contract and analyzes its efficiency. Additionally, it reviews a proposed revision to the established manner of contracting transportation services, which was presented in 1983. Finally, it reviews potential future improvements to QUICKTRANS and the entire Navy Integrated Transportation system.
Topics: Management, Navy's Cargo Transportation system QUICKTRANS, CONTRUCK
This study explains how to control vehicle’s emission level and also how to keep traffic under control by using Radio Frequency Identification (RFID) technology. The RFID can also provide complete details about the vehicle. Further, it helps to control traffic flow, keep emission under control, remove all outdated vehicles, generate parking bills and avoid health-related issues. There are many advantages of implementing this RFID system. The semi-passive and the RFID reader monitor the...
Topics: RFID, Automobile, Transportation System, Vehicle Issues & Emission
The Department of Defense (DoD) has started a modernization effort to support the movement of ammunition and general cargo for contingency operations. This modernization effort includes the procurement of new intermodal containers, container handling equipment, port upgrades and agreements with commercial industry. In order to understand how ammunition can be transported effectively and efficiently, the supply chain must be examined to identify choke points, limitations and short-falls that...
Topics: Defense Transportation System, Intermodal Ammunition Transportation, Logistics
217
217
Jul 12, 2010
07/10
by
Pitts, F. L.; Thomas, M. E
texts
eye 217
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Tests designed to investigate the lightning-generated electromagnetic environment affecting aircraft are discussed. An F-106B aircraft specially instrumented for lightning electromagnetic measurements was used. The instrumentation system is reviewed and typical results recorded by the instrumentation during simulated-lightning ground tests performed for a safety survey are presented. Several examples of data obtained during summer flight testing are presented and future plans are discussed.
Topics: SPACE SHUTTLE ORBITERS, SPACE TRANSPORTATION SYSTEM, SPACE TRANSPORTATION SYSTEM FLIGHTS,...
971
971
May 28, 2011
05/11
by
NON
texts
eye 971
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This supplemental issue of Aeronautical Engineering, A Continuing Bibliography with Indexes (NASA/SP-1999-7037) lists reports, articles, and other documents recently announced in the NASA STI Database. The coverage includes documents on the engineering and theoretical aspects of design, construction, evaluation, testing, operation, and performance of aircraft (including aircraft engines) and associated components, equipment, and systems. It also includes research and development in...
Topics: OZONE, OZONOMETRY, CHLOROFLUOROCARBONS, ATMOSPHERIC COMPOSITION, SPACE TRANSPORTATION SYSTEM, SPACE...
656
656
movies
eye 656
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This NASA segment focuses on the importance of air travel in today’s society. Currently, over 600 million people travel on airplanes and it is expected that over a billion people will use air transportation in the near future. Attention is turning to ways to improve what is an already crowded transportation system. A unique government and commercial plan develops the Next Generation Air Transportation System, or NGATS. The Joint Planning Development Office (JPDO) is designing a multi-stage...
Topics: air travel, transportation system, NGATS, JPDO, aviation safety
407
407
May 23, 2011
05/11
by
Simon, Rainee N.; Lee, Richard Q
texts
eye 407
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The paper presents first, an efficient measurement technique to characterize the input impedance of a Vivaldi antenna, second, a simple technique to impedance match a Vivaldi antenna to a 50 Ohm feed line and lastly, a desktop arrangement to determine the directional gain of a Vivaldi antenna. The characterization is done using a microwave wafer probe station, a ground-signal microwave probe, impedance standard substrate and an automatic network analyzer. The Vivaldi antenna with a matching...
Topics: SPACE TRANSPORTATION SYSTEM FLIGHTS, SPACE MISSIONS, MIR SPACE STATION, ORBITAL RENDEZVOUS, SPACE...
The ground rules and constraint to be used in generating the Space Transportation System 1 Flight operational flight profile are established. A brief summary of the flight is also presented.
Topics: NASA Technical Reports Server (NTRS), CONSTRAINTS, MISSION PLANNING, SPACE TRANSPORTATION SYSTEM 1...
The results of air quality predictions and measurements made during the launches of the Space Shuttle are presented. The atmospheric conditions, the use of the REED code, and the resulting predictions and measurements are discussed.
Topics: NASA Technical Reports Server (NTRS), AIR QUALITY, EFFLUENTS, ROCKET EXHAUST, SPACE TRANSPORTATION...
292
292
May 26, 2011
05/11
by
NON
texts
eye 292
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Controlled molecular weight phenylethynyl terminated imide oligomers (PETIs) have been prepared by the cyclodehydration of precursor phenylethynyl terminated amic acid oligomers. Amino terminated amic acid oligomers are prepared from the reaction of dianhydride(s) with an excess of diamine(s) and subsequently endcapped with phenylethynyl phthalic anhydride(s) (PEPA). The polymerizations are carried out in polar aprotic solvents such as N-methyl-2-pyrrolidinone or N.N-dimethylacetamide under...
Topics: SPACE MISSIONS, SPACE TRANSPORTATION SYSTEM FLIGHTS, MICROGRAVITY, LIFE SUPPORT SYSTEMS, SPACE...
338
338
Sep 20, 2010
09/10
by
Burken, John J
texts
eye 338
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Singular value analysis can give conservative stability margin results. Applying structure to the uncertainty can reduce this conservatism. This paper presents flight-determined stability margins for the X-29A lateral-directional, multiloop control system. These margins are compared with the predicted unscaled singular values and scaled structured singular values. The algorithm was further evaluated with flight data by changing the roll-rate-to-aileron command-feedback gain by /- 20 percent....
Topics: ORBITAL SERVICING, SPACECRAFT MAINTENANCE, CATALOGS (PUBLICATIONS), SPACE TRANSPORTATION SYSTEM
335
335
May 23, 2011
05/11
by
Sa, Jong-Youb; Kwak, Docha
texts
eye 335
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A numerical method for the convective heat transfer problem is developed for low speed flow at mild temperatures. A simplified energy equation is added to the incompressible Navier-Stokes formulation by using Boussinesq approximation to account for the buoyancy force. A pseudocompressibility method is used to solve the resulting set of equations for steady-state solutions in conjunction with an approximate factorization scheme. A Neumann-type pressure boundary condition is devised to account...
Topics: SPACE TRANSPORTATION SYSTEM FLIGHTS, EXTERNAL TANKS, LAUNCHING, DAMAGE, DEBRIS, DEICING, ICE...
Urban cargo transport movements, due to their characteristics and particularities, involve different dimensions and variables. As a result, it demands specific logistics costs, consisting of a relevant portion of the total business costs, being directly linked to the route taken by the vehicle fleet. In that way, it is necessary to define roadmaps for vehicles in order to minimize the total distance traveled, total cost and total elapsed time when supplying clients. With the development of...
Topics: Decision making support, Transportation System Planning, Balancing urban freight transport.
171
171
Jul 12, 2010
07/10
by
Movchan, A. A
texts
eye 171
favorite 0
comment 0
No Abstract Available
Topics: COMMUNICATION EQUIPMENT, EQUIPMENT SPECIFICATIONS, SPACE TRANSPORTATION SYSTEM, GRAPHS (CHARTS),...
Transportation resource planning and implementation within a theater of operations have always been challenging for logisticians. This was especially true during Operation Desert Storm, where new lessons were learned because of a scenario different than any other experienced. What was needed was a transportation asset-focused model that would allow logisticians to plan more effectively for current and future transportation system requirements. The focus of this study is the development of the...
Topics: MODSIM, Object-oriented programming, Simulations, Transportation system, Intra-theater operations
25
25
Mar 30, 2021
03/21
by
H. Varun Chand, J. Karthikeyan
texts
eye 25
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Precise and appropriate traffic related data allows travellers to choose suitable travelling modes, travelling paths, and departure time, which is crucial for the success of Intelligent Transportation System (ITS). With the growth of vehicles, the rate of pollution and consumption of fuel has increased, it also creates traffic congestions. For the recent years there has been a rapid growth in technology, which can be explored to solve traffic issues. However, depending upon the available...
Topics: Intelligent Transportation System, Internet of Things, Clustering, Resource Privacy, Vanet
413
413
Jul 21, 2010
07/10
by
Noda, T
texts
eye 413
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comment 0
The commercialization of solar power generation necessitates the development of low cost manufacturing method of silicon suitable for solar cells. The manufacturing methods of semiconductor grade silicon (SEG-Si) and the development of solar grade silicon (SOG-Si) in foreign countries was investigated. It was concluded that the most efficient method of developing such materials was the hydrogen reduction process of trichlorosilane (TCS), using a fluidized bed reactor. The low cost reduction of...
Topics: SPACE STATIONS, TETHERED SATELLITES, TETHERLINES, ELECTRODYNAMICS, MICROGRAVITY, SPACE...
190
190
May 22, 2011
05/11
by
Armagan, G.; Buoncristiani, A. M.; Dibartolo, B
texts
eye 190
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The processes that take place in the excited states of a trivalent Thulium (Tm) ion in an Yttrium Aluminum Garnet (YAG) crystal, being relevant to the use of this system for laser applications, have been the object of several studies. We have reexamined this system focusing our attention on the dynamics of Tm following its excitation in the H-3(sub 4) level. Under these conditions the system relaxes through a cross-relaxation process. H-3(sub 4) yields F-3(sub 4), H-3(sub 6) yields F-3(sub 4),...
Topics: INSULATION, POSTFLIGHT ANALYSIS, ROCKET NOZZLES, ADAPTERS, IGNITERS, SPACE TRANSPORTATION SYSTEM...
The second, third, and fourth space transportation system missions are described including the location of the IECM in the payload bay and the shuttle coordinate systems used. Measurement results from the three flights are given for each instrument with comparisons to original goals for preflight environment and induced environment contamination. These results include very low levels of molecular mass accumulation rates, absence of molecular films on optical samples, outgassing species above 50...
Topics: NASA Technical Reports Server (NTRS), SPACE SHUTTLE ORBITERS, SPACE TRANSPORTATION SYSTEM 2 FLIGHT,...
Space Transportation System 33 (STS-33) safety risk factors that represent a change from previous flights, factors from previous flights that have an impact on this flight, and the factors that are not unique to this flight are discussed. While some changes to the safety risk baseline are included to highlight their significance in risk level change, the primary purpose is to insure that changes which were too late to include in formal changes through the Failure Modes and Effects...
Topics: NASA Technical Reports Server (NTRS), FAILURE MODES, HAZARDS, RISK, SAFETY, SAFETY FACTORS, SPACE...
416
416
May 30, 2011
05/11
by
Reginald, Nelson L
texts
eye 416
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comment 0
In Cram's theory for the formation of the K-coronal spectrum he observed the existence of temperature sensitive anti-nodes, which were separated by temperature insensitive nodes, at certain wave-lengths in the K-coronal spectrum. Cram also showed these properties were remarkably independent of altitude above the solar limb. In this thesis Cram's theory has been extended to incorporate the role of the solar wind in the formation of the K-corona, and we have identified both temperature and wind...
Topics: EARTH SCIENCES, SPACE TRANSPORTATION SYSTEM FLIGHTS, MICROGRAVITY, INTERNATIONAL SPACE STATION,...
161
161
Oct 14, 2010
10/10
by
Montana.Dept. of Transportation
texts
eye 161
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comment 0
Title from cover
Topics: Roads, Roads, Roads, Roads, Highway planning, Highway planning, Transportation, Transportation...
271
271
May 28, 2011
05/11
by
Prince, Frank A
texts
eye 271
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comment 0
The RLV Market Analysis model is at best a rough order approximation of actual market behavior. However, it does give a quick indication if the flights exists to enable an economically viable RLV, and the assumptions necessary for the vehicle to capture those flights. Additional analysis, market research, and updating with the latest information on payloads and launches would improve the model. Plans are to update the model as new information becomes available and new requirements are levied....
Topics: MICROGRAVITY, SPACEBORNE EXPERIMENTS, SPACE TRANSPORTATION SYSTEM FLIGHTS, SPACE SHUTTLES,...
534
534
Oct 14, 2010
10/10
by
Montana.Dept. of Transportation
texts
eye 534
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comment 0
Title from cover
Topics: Roads, Roads, Roads, Roads, Highway planning, Highway planning, Transportation, Transportation...
158
158
Oct 14, 2010
10/10
by
Montana.Dept. of Transportation
texts
eye 158
favorite 0
comment 0
Title from cover
Topics: Roads, Roads, Roads, Roads, Highway planning, Highway planning, Transportation, Transportation...
The recent economic growth in developing countries like India has resulted in an intense increase of vehicle ownership and use, as witnessed by severe traffic congestion and bottlenecks during peak hours in most of the metropolitan cities. Intelligent Transportation Systems (ITS) aim to reduce traffic congestion by adopting various strategies such as providing pre-trip and en-route traffic information thereby reducing demand, adaptive signal control for area wide optimization of traffic flow,...
Topics: Intelligent Transportation System, traffic state estimation, macroscopic traffic modeling,...
344
344
Sep 20, 2010
09/10
by
NON
texts
eye 344
favorite 0
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A printer port interface is provided which converts the printer port on a personal computer to a general purpose bus so that a number of external devices or microprocessor peripheral integrated circuits may be connected to a personal computer via the printer port on the personal computer. This interface enables the printer port to emulate a simple 8 bit microprocessor. The interface device connects the external device to the personal computer and in write mode, received data from the personal...
Topics: ATMOSPHERIC COMPOSITION, SPACE TRANSPORTATION SYSTEM, SPACE TRANSPORTATION SYSTEM FLIGHTS,...
172
172
Oct 14, 2010
10/10
by
Montana.Dept. of Transportation
texts
eye 172
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comment 0
Title from cover
Topics: Roads, Roads, Roads, Roads, Highway planning, Highway planning, Transportation, Transportation...
348
348
Jul 26, 2010
07/10
by
Chorey, C. M.; Bhasin, K. B.; Warner, J. D.; Josefowicz, J. Y.; Rensch, D. B.; Nieh, C. W
texts
eye 348
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Microstrip transmission lines in the form of ring resonators were fabricated from a number of in-situ grown laser ablated films and post-annealed co-sputtered YBa2Cu3O(7-x) films. The properties of these resonators were measured at 35 GHz and the observed performance is examined in light of the critical temperature (Tc) and film thickness and also the film morphology which is different for the two deposition techniques. It is found that Tc is a major indicator of the film performance for each...
Topics: ENGINEERING, REPORTS, RESEARCH AND DEVELOPMENT, TECHNOLOGIES, PAYLOADS, PRODUCT DEVELOPMENT, SPACE...
227
227
Oct 14, 2010
10/10
by
Montana.Dept. of Transportation
texts
eye 227
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Title from cover
Topics: Roads, Roads, Roads, Roads, Highway planning, Highway planning, Transportation, Transportation...
This Document Has Been Prepared to: 1) Provide an In-Depth System Description for Technical Reviews and Briefings By NASA and Martin Marietta Astronautics Group (MMAG) Personnel; and 2) Provide TSS-1 Familiarization Training for New Personnel Who Are Assigned to the NASA and MMAG Project for Future Missions.
Topics: NASA Technical Reports Server (NTRS), TETHERED SATELLITES, SPACE TRANSPORTATION SYSTEM, EDUCATION,...
156
156
Oct 14, 2010
10/10
by
Montana.Dept. of Transportation
texts
eye 156
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Title from cover
Topics: Roads, Roads, Roads, Roads, Highway planning, Highway planning, Transportation, Transportation...
The approach taken to the issue, that 'How do you say you're 'good for go' if you space assemble an entry vehicle?', are: (1) shuttle orbiter thermal protection certification; (2) shuttle thermal protection system flight experience; and (3) space assembled entry system certification.
Topics: NASA Technical Reports Server (NTRS), AEROSPACE SYSTEMS, ASSEMBLING, CERTIFICATION, MISSION...
168
168
Oct 14, 2010
10/10
by
Montana.Dept. of Transportation
texts
eye 168
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Title from cover
Topics: Roads, Roads, Roads, Roads, Highway planning, Highway planning, Transportation, Transportation...
266
266
Oct 14, 2010
10/10
by
Montana.Dept. of Transportation
texts
eye 266
favorite 0
comment 0
Title from cover
Topics: Roads, Roads, Roads, Roads, Highway planning, Highway planning, Transportation, Transportation...
147
147
Oct 14, 2010
10/10
by
Montana.Dept. of Transportation
texts
eye 147
favorite 0
comment 0
Title from cover
Topics: Roads, Roads, Roads, Roads, Highway planning, Highway planning, Transportation, Transportation...
273
273
Oct 14, 2010
10/10
by
Montana.Dept. of Transportation
texts
eye 273
favorite 0
comment 0
Title from cover
Topics: Roads, Roads, Roads, Roads, Highway planning, Highway planning, Transportation, Transportation...
152
152
Oct 14, 2010
10/10
by
Montana.Dept. of Transportation
texts
eye 152
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Title from cover
Topics: Roads, Roads, Roads, Roads, Highway planning, Highway planning, Transportation, Transportation...
Due to the short flight of Space Shuttle Columbia, STS-83, in April 1997, NASA chose to refly the same crew, shuttle, and payload on STS-94 in July 1997. This was the first reflight of an entire mission complement. The reflight of the First Microgravity Science Laboratory (MSL-1) on STS-94 required an innovative approach to Space Shuttle payload ground processing. Ground processing time for the Spacelab Module, which served as the laboratory for MSL-1 experiments, was reduced by seventy-five...
Topics: NASA Technical Reports Server (NTRS), SPACE MISSIONS, SPACE TRANSPORTATION SYSTEM FLIGHTS,...
457
457
texts
eye 457
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comment 0
The recent economic growth in developing countries like India has resulted in an intense increase of vehicle ownership and use, as witnessed by severe traffic congestion and bottlenecks during peak hours in most of the metropolitan cities. Intelligent Transportation Systems (ITS) aim to reduce traffic congestion by adopting various strategies such as providing pre-trip and en-route traffic information thereby reducing demand, adaptive signal control for area wide optimization of traffic flow,...
Topics: Intelligent Transportation System, traffic state estimation, macroscopic traffic modeling,...
Mission safety factors relative to Space Transportation System (STS) Mission 34 are discussed. In addition to a mission summary, safety risk factors and inflight anomalies are discussed.
Topics: NASA Technical Reports Server (NTRS), RISK, SAFETY, SPACE SHUTTLE MISSIONS, SPACE TRANSPORTATION...
152
152
Oct 14, 2010
10/10
by
Montana.Dept. of Transportation
texts
eye 152
favorite 0
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Title from cover
Topics: Roads, Roads, Roads, Roads, Highway planning, Highway planning, Transportation, Transportation...
224
224
Oct 14, 2010
10/10
by
Montana.Dept. of Transportation
texts
eye 224
favorite 0
comment 0
Title from cover
Topics: Roads, Roads, Roads, Roads, Highway planning, Highway planning, Transportation, Transportation...
Space Transportation System 35 (STS-35) safety risk factors that represent a change from previous flights that had an impact on this flight, and factors that were unique to this flight are discussed. While some changes to the safety risk baseline since the previous flight are included to highlight their significance in risk level change, the primary purpose is to insure that changes which were too late too include in formal changes through the Failure Modes and Effects Analysis/Critical Items...
Topics: NASA Technical Reports Server (NTRS), FAILURE MODES, HAZARDS, RISK, SAFETY, SAFETY FACTORS, SPACE...
542
542
Oct 14, 2010
10/10
by
Montana.Dept. of Transportation
texts
eye 542
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Title from cover
Topics: Roads, Roads, Roads, Roads, Highway planning, Highway planning, Transportation, Transportation...
During the 31st shuttle mission to the International Space Station, STS-129, there was a clogging event in the shuttle wastewater tank. A routine wastewater dump was performed during the mission and before the dump was completed, degraded flow was observed. In order to complete the wastewater dump, flow had to be rerouted around the dump filter. As a result, a basic chemical and microbial investigation was performed to understand the shuttle wastewater system and perform mitigation tasks to...
Topics: NASA Technical Reports Server (NTRS), WASTE WATER, INTERNATIONAL SPACE STATION, SPACE SHUTTLE...
