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Jul 11, 2010
07/10
by
Shulman, S.; Naranan, S.; Snyder, W.; Yentis, D.; Cruddace, R.; Friedman, H.; Fritz, G.; Henry, R
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Celestial X-ray sources were observed in the energy range from 0.1 to 10 keV. Despite in-flight anomalies encountered in the operation of the experiment, X-ray spectra and fast time variability were measured and regions of enhanced emission in the X-ray background, an X-ray pulsar, and an X-ray emitting supernova remnant were detected. Results of observations of SMC x-1, extended low energy sources, and HZ 43 are briefly summarized.
Topics: CRYOGENIC EQUIPMENT, CRYOGENIC FLUIDS, HEAT PIPES, CRYOGENICS, ETHANE, REFRIGERATING MACHINERY
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206
Jun 2, 2011
06/11
by
Betchov, R.; Welling, W
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We compare here the results of some experiences with the formulas established in our preceding report 'Nonlinear Theory of a Hot-Wire Anemometer.' We shall show that the nonlinear term plays a role as important as the thermal conduction in the calculation of the thermal inertia of the hot wire.
Topics: CRYOGENIC FLUIDS, FLOW VELOCITY, CRYOGENIC TEMPERATURE, HEAT TRANSFER, CRYOGENIC EQUIPMENT
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1.0K
May 6, 2010
05/10
by
Stewart, R. B.; Timmerhaus, K. D
texts
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Thermodynamic properties of cryogenic fluids - evaluation of experimental data
Topics: CARBON MONOXIDE, CRYOGENIC FLUIDS, THERMODYNAMIC PROPERTIES, CRYOGENIC FLUID, THERMODYNAMIC PROPERTY
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179
Jul 6, 2010
07/10
by
ALBIN, M.; FEOLA, M
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DOUBLE FLOW TURBOJET PROPULSION IS DISCUSSED IN TERMS OF SECONDARY FLOW CAPACITY. THE TWO MOST CHARACTERISTIC ELEMENTS OF THIS PROCESS ARE THE RATIOS OF COMPRESSION AND BYPASS OF THE FAN. STUDIES ARE PRESENTED WHICH SHOW THAT AS THE BYPASS RATIO IMPROVES GLOBAL THERMOPROPULSIVE EFFICIENCY IT SIMULATANEOUSLY LOWERS THE SPECIFIC THRUST. THUS, IN ORDER TO ATTAIN THE NECESSARY THRUST, A CONSIDERABLE INCREASE IN THE DIMENSIONS OF THE SECONDARY FLOW (FAN) IS REQUIRED. IT IS FOUND TO BE POSSIBLE, BY...
Topics: AUXILIARY PROPULSION, LIQUEFIED GASES, SPECIFIC IMPULSE, COMBUSTION EFFICIENCY, CRYOGENIC FLUIDS,...
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302
May 6, 2010
05/10
by
Jacobs, R. B.; Macinko, J.; Miller, C. E
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eye 302
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Electromechanical measurement of density of flowing cryogenic fluids
Topics: CRYOGENIC FLUIDS, DENSITOMETERS, DYNAMOMETERS, ELECTROMECHANICAL DEVICES, ELECTROMECHANICS,...
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266
Jul 12, 2010
07/10
by
Dickson, C. R.; Gould, R. K.; Felder, W
texts
eye 266
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High temperature reactions of silicon halides with alkali metals for the production of solar grade silicon are described. Product separation and collection processes were evaluated, measure heat release parameters for scaling purposes and effects of reactants and/or products on materials of reactor construction were determined, and preliminary engineering and economic analysis of a scaled up process were made. The feasibility of the basic process to make and collect silicon was demonstrated....
Topics: CRYOGENIC EQUIPMENT, DIAPHRAGMS (MECHANICS), INFRARED TELESCOPES, LIQUID HELIUM, SPACELAB,...
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509
May 6, 2010
05/10
by
Cushing, V.; Edmunds, G.; Reily, D
texts
eye 509
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Electromagnetic induction flow meter for liquid hydrogen
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Topics: CRYOGENIC FLUIDS, ELECTROMAGNETISM, FLOWMETERS, LIQUID HYDROGEN, MAGNETIC INDUCTION, FLOW METER,...
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255
May 31, 2011
05/11
by
Killen, Rosemary M
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eye 255
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We propose that Ar-40 measured in the lunar atmosphere and that in Mercury's atmosphere is due to current diffusion into connected pore space within the crust. Higher temperatures at Mercury, along with more rapid loss from the atmosphere will lead to a smaller column abundance of argon at Mercury than at the Moon, given the same crustal abundance of potassium. Because the noble gas abundance in the Hermean atmosphere represents current effusion, it is a direct measure of the crustal potassium...
Topics: CRYOGENIC FLUIDS, EVAPORATION, FLUID MANAGEMENT, CRYOGENIC ROCKET PROPELLANTS, THERMAL INSULATION,...
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179
Jun 11, 2011
06/11
by
NON
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In this issue, ASK writers explore ways to maintain their balance in their field of Project Management, and even what happens when they don't. From his own experiences. Colby Africa learned that pushing too hard can take a personal toll, even though his project was a success in the end. He looked back and asked himself. At what personal cost Sometimes one of the most simple - and the most human way - of keeping oneself grounded is not to lose your sense of humor. Ray Morgan's story about a test...
Topics: CRYOGENIC FLUIDS, FLUID MANAGEMENT, BIBLIOGRAPHIES, PROPELLANT STORAGE, CRYOGENIC FLUID STORAGE,...
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Jun 13, 2011
06/11
by
Ratcliffe, James; Jackson, Wade; Schaff, Jeffer
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The objective of this work was to develop a technique for predicting the residual compression strength of sandwich panels containing impact damage in one facesheet. The technique was tailored to predict the strength of specimens that exhibit a failure mode involving the formation of kink bands at locations of peak strain in the region of impact damage. Under continued compression loading, the kink bands propagate in a stable manner perpendicular to the applied load. When a critical kink-band...
Topics: CRYOGENIC FLUIDS, OPTICAL MEASURING INSTRUMENTS, THERMOCOUPLES, BOILING, LIQUID LEVELS, LIQUID...
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184
Jun 21, 2010
06/10
by
Seidel, A
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Development of gaseous hydrogen oxygen auxiliary propulsion system engine for space shuttle
Topics: CRYOGENIC FLUIDS, FILM COOLING, HEAT TRANSFER, SKIN TEMPERATURE (BIOLOGY), FILM BOILING, LIQUID...
Closed-cycle refrigerating system for superconductive magnet and maser is operated in vacuum environment. Each wire leading from external power source passes through cooling station which blocks heat conduction. In connection with these stations, switch with small incandescent light bulb, which generates heat, is used to stop superconduction.
Topics: NASA Technical Reports Server (NTRS), COOLING SYSTEMS, CRYOGENIC FLUIDS, MASERS, SUPERCONDUCTING...
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183
Jul 9, 2010
07/10
by
KYLSTRA, J.; HOOGERHEIDE, J
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eye 183
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COMMERCIAL PILOTS SITTING BEFORE AND LOOKING AT A TELEVISION SCREEN, ON WHICH WERE PRESENTED MOVING DOTS OR BARS SIMULATING AN APPROACH TO A VISUAL LANDING SYSTEM, WERE ASKED TO DISCRIMINATE BETWEEN LEVEL FLIGHT OR FLIGHT WITH CHANGE IN ALTITUDE IN THE SENSE OF A DESCENT. THERE WERE 4 PATTERNS OF LIGHT MARKINGS: SINGLE ROW, DOUBLE ROW, SINGLE CROSSBARS AND DOUBLE CROSSBARS. CHANGES IN ALTITUDE WERE SIGNIFICANTLY BETTER OBSERVED IN THE DOUBLE PATTERNS THAN IN THE SINGLE PATTERNS.
Topics: LIQUID HELIUM, NUCLEATE BOILING, ROCKET-BORNE INSTRUMENTS, WEIGHTLESSNESS SIMULATION, CRYOGENIC...
An investigation to adapt axial grooved designs to the gammit of heat pipe thermal control techniques, with particular emphasis on those suited for cryogenic applications was conducted. In addition to considering both active and passive gas control, diode designs utilizing liquid or gas blockage, or a liquid trap, are evaluated. The use of the liquid trap as a secondary heat pipe for forward mode operation during diode shutdown is also studied. This latter function is basically that of a...
Topics: NASA Technical Reports Server (NTRS), AXIAL FLOW, CRYOGENICS, HEAT PIPES, CRYOGENIC FLUIDS, DIODES,...
MPI Outdoor Safety Products developed aluminized mylar to make Echo Satellites more reflective, to insulate cryogenic fluids, and for space suit insulation. This technology has spun off to a variety of consumer products. Sportsman's blankets and jackets, ski parkas, sleeping bags, and even life-raft canopies are among them. Sportsman's blanket weighing 12 ounces can be used equally well to keep heat away or keep available heat in. Emergency rescue blanket has heat retention qualities similar to...
Topics: NASA Technical Reports Server (NTRS), JACKETS, MYLAR (TRADEMARK), INSULATION, AEROSPACE TECHNOLOGY...
321
321
May 22, 2011
05/11
by
Katnik, Gregory N.; Bowen, Barry C.; Davis, J. Bradle
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eye 321
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A debris/ice/thermal protection system assessment and integrated photographic analysis was conducted for shuttle mission STS-63. Debris inspections of the flight elements and launch pad were performed before and after launch. Icing conditions on the external tank were assessed by the use of computer programs, monographs, and infrared scanner data during cryogenic loading of the vehicle followed by on-pad visual inspection. High speed photography of the launch was analyzed to identify ice/debris...
Topics: CAVITATION FLOW, CAVITIES, CRYOGENIC FLUIDS, EULER EQUATIONS OF MOTION, NAVIER-STOKES EQUATION,...
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547
May 27, 2011
05/11
by
Wade, William R
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A description of the apparatus and methods used for obtaining total hemispherical emissivity is presented, and data for several stably oxidized metals are included. The metals which were tested included type 347 stainless steel, tungsten, and Haynes alloys B, C, X, and 25. No values of emissivity were obtained for tungsten or Haynes alloy B because of the nature of the oxides produced. The refractory oxide coatings tested were flame-sprayed alumina and zirconia. The results of the investigation...
Topics: PISTONS, FUEL PUMPS, CRYOGENIC FLUIDS, LIQUID HYDROGEN, CRYOPUMPING, CAVITATION FLOW, JP-4 JET...
Three questions are addressed: what mission must a cryogenic seal perform; what are the contrasts between desirable and available seal materials; and how realistic must test conditions be. The question of how to quantify the response of a material subject to large strains and which is susceptible to memory effects leads to a discussion of theoretical issues. Accordingly, the report summarizes some ideas from the rational mechanics of materials. The report ends with a list of recommendations and...
Topics: NASA Technical Reports Server (NTRS), CRYOGENIC FLUIDS, CRYOGENICS, PERFORMANCE TESTS, SEALS...
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201
Jul 23, 2010
07/10
by
Butler, Ricky W.; White, Allan L
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The SURE program is a new reliability analysis tool for ultrareliable computer system architectures. The computational methods on which the program is based provide an efficient means for computing accurate upper and lower bounds for the death state probabilities of a large class of semi-Markov models. Once a semi-Markov model is described using a simple input language, the SURE program automatically computes the upper and lower bounds on the probability of system failure. A parameter of the...
Topics: CRYOGENIC FLUIDS, CRYOGENICS, FLUID MANAGEMENT, SPACEBORNE EXPERIMENTS, DELTA LAUNCH VEHICLE,...
A series of parametric investigations are described which determine the effect of various fluid charges on the performance of a 0.635-cm-diam spiral-artery, liquid-trap diode in both the forward and reverse modes. Specific parameters such as forward- and reverse-mode conductances, shutdown times and energies, and recovery to forward-model operation, are evaluated for ethane as a working fluid in the temperature range 170 K to 220 K. Results indicate that the heat pipe will not reliably start up...
Topics: NASA Technical Reports Server (NTRS), CRYOGENIC EQUIPMENT, CRYOGENIC FLUIDS, HEAT PIPES,...
Three loss mechanisms in fountain-effect pumps are identified and analyzed. Two of these mechanisms reduce the mechano-caloric effect, by reducing the mass transferred per unit heat input. The first loss mechanism of these losses is the result of normal fluid leakage through the pump. The second loss mechanism is the result of the finite separation between the porous plug and the heater. The third loss mechanism reduces the thermomechanical effect. It results from the Gorter-Mellink interaction...
Topics: NASA Technical Reports Server (NTRS), CRYOGENIC FLUIDS, EFFICIENCY, LOSSES, PUMPS, LEAKAGE, LIQUID...
The Pool Boiling Experiment (PBE) is designed to improve understanding of the fundamental mechanisms that constitute nucleate pool boiling. Nucleate pool boiling is a process wherein a stagnant pool of liquid is in contact with a surface that can supply heat to the liquid. If the liquid absorbs enough heat, a vapor bubble can be formed. This process occurs when a pot of water boils. On Earth, gravity tends to remove the vapor bubble from the heating surface because it is dominated by buoyant...
Topics: NASA Technical Reports Server (NTRS), CRYOGENIC FLUIDS, SPACEBORNE EXPERIMENTS, NUCLEATE BOILING,...
This paper discusses current plans and issues for exploration that involve the use of cryogenic transfer. The benefits of cryogenic transfer to exploration missions are examined. The current state of the art of transfer technology is reviewed. Mission concepts of operation for exploration are presented, and used to qualitatively discuss the performance benefits of transfer. The paper looks at the challenges faced to implement a cryogenic transfer system and suggest approaches to address them...
Topics: NASA Technical Reports Server (NTRS), CRYOGENIC FLUIDS, GROUND TESTS, HYDROGEN, CRYOGENICS, MISSION...
This custom bibliography from the NASA Scientific and Technical Information Program lists a sampling of records found in the NASA Aeronautics and Space Database. The scope of this topic includes cooling technologies for precision astronomical sensors and advanced spacecraft, as well as propellant storage and transfer in space. This area of focus is one of the enabling technologies as defined by NASA's Report of the President's Commission on Implementation of United States Space Exploration...
Topics: NASA Technical Reports Server (NTRS), CRYOGENIC FLUIDS, FLUID MANAGEMENT, BIBLIOGRAPHIES,...
Liquid methane is beginning to become an energy alternative to expensive oil as a power source for automotive vehicles. Methane is the principal component of natural gas, costs less than half as much as gasoline, and its emissions are a lot cleaner than from gasoline or diesel engines. Beech Aircraft Corporation's Boulder Division has designed and is producing a system for converting cars and trucks to liquid methane operation. Liquid methane (LM) is a cryogenic fuel which must be stored at a...
Topics: NASA Technical Reports Server (NTRS), METHANE, MOTOR VEHICLES, LIQUEFIED GASES, CRYOGENIC FLUIDS,...
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226
May 31, 2011
05/11
by
Chou, Mong-Dah; Chan, Pui-King; Wang, Menghu
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To understand climatic implications of aerosols over global oceans, the aerosol optical properties retrieved from the Sea-viewing Wide Field-of-view Sensor (SeaWiFS) are analyzed, and the effects of the aerosols on the Earth's radiation budgets (aerosol radiative forcing, ARF) are computed using a radiative transfer model. It is found that the distribution of the SeaWiFS-retrieved aerosol optical thickness is distinctively zonal. The maximum in the equatorial region coincides with the...
Topics: CHEMICAL ENGINEERING, CRYOGENICS, SPACE EXPLORATION, CRYOGENIC FLUIDS, LIQUID OXYGEN, LIQUID...
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178
Jul 21, 2010
07/10
by
Ake, T. B
texts
eye 178
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The major characteristics in the ultraviolet of the 1982-84 eclipse of Eps Aur as observed with IUE by various workers are summarized. This star can be observed over the entire IUE wavelength range, from 1200 to 3200 A, in low dispersion, allowing eclipse light curves to be obtained in broadband regions, but due to its steep spectral gradient and the sensitivities of IUE cameras, high resolution exposures adequately cover only the regions from 1700-1900 and 2400-3200 A. In many ways, the UV...
Topics: CONFERENCES, CRYOGENICS, ELECTRONIC EQUIPMENT, INFRARED DETECTORS, MAGNETS, COOLERS, CRYOGENIC...
No abstract available
Topics: NASA Technical Reports Server (NTRS), PROPELLANT STORAGE, CRYOGENIC FLUIDS, STORABLE PROPELLANTS,...
A vessel having inlet and outlet valves is disposed in a container with a fluid to be pumped which may be evolved from a liquid in the container below the vessel. A magnetocaloric substance is disposed in the vessel and causes fluid vapor in the vessel to expand and be expelled through the outlet valve. Vapor is drawn in through the inlet valve as the substance cools. The inlet valves may be one-way check valves or may be solenoid valves energized at appropriate times by timing circutis. A...
Topics: NASA Technical Reports Server (NTRS), CRYOGENIC FLUIDS, MAGNETIC PUMPING, PUMPS, CONTROL VALVES,...
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402
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The three papers collected here are: 'The Effect of Nose Shape on the Drag of Bodies of Revolution at Zero Angle of Attack.', 'Base Pressure on Wings and Bodies with Turbulent Boundary Layers', and 'Flow over Inclined Bodies'. The subject of the first paper is the drag of the nose section of bodies of revolution at zero angle of attack. The main object of the second paper is to summarize the prinicpal results of the many wind tunnel and free flight measurements of base pressure on both bodies...
Topics: CRYOGENIC FLUIDS, LEADING EDGES, CAVITATION FLOW, THERMODYNAMIC PROPERTIES, TEMPERATURE EFFECTS,...
Energy efficient storage, transfer and use of cryogens and cryogenic propellants on Earth and in space have a direct impact on NASA, government and commercial programs. Research and development on thermal insulation, propellant servicing, cryogenic components, material properties and sensing technologies provides industry, government and research institutions with the cross-cutting technologies to manage low-temperature applications. Under the direction of the Cryogenic Testing Lab at Kennedy...
Topics: NASA Technical Reports Server (NTRS), DESIGN ANALYSIS, THERMAL INSULATION, DETECTION, CRYOGENIC...
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172
Jul 12, 2010
07/10
by
Kittel, P
texts
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Advances in storage technology and how passive techniques could be applied to the storage of propellants at the space station are described. The devices considered are passive orbital disconnect struts, cooled shield optimization, liftweight shields and catalytic converters.
Topics: AEROASSIST, SCAVENGING, ORBIT TRANSFER VEHICLES, PROPULSION SYSTEM PERFORMANCE, SPACE STATIONS,...
This report describes the results of the "Experimentation for the Maturation of Deep Space Cryogenic Refueling Technology" study. This study identifies cryogenic fluid management technologies that require low-gravity flight experiments bring technology readiness levels to 5 to 6; examines many possible flight experiment options; and develops near-term low-cost flight experiment concepts to mature the core technologies. A total of 25 white papers were prepared by members of the project...
Topics: NASA Technical Reports Server (NTRS), MICROGRAVITY, CRYOGENIC FLUIDS, REFUELING, AEROSPACE...
The transient behavior of a small scale cryogenic transfer line was investigated during chilldown to cryogenic temperatures. The vacuum-jacketed apparatus consisted of a vertical tube followed by a near horizontal tube. The apparatus was equipped with view ports in the near horizontal section to allow visual observation of the flow patterns. Wall temperatures were measured at various locations along the length of the transfer line. Each test was conducted at a constant liquid volumetric...
Topics: NASA Technical Reports Server (NTRS), CRYOGENIC FLUIDS, FLOW VELOCITY, CRYOGENIC TEMPERATURE, HEAT...
Given the wide diversity of cryogenic fluid management technology that had been developed at the research level, there was a need for eCryo to prioritize and focus on a limited subset of the possibilities in order to set a practical scope. As part of the effort to determine that focus, a survey was conducted in May of 2014 to solicit opinions of members of the aerospace industry as to what they considered the most important and beneficial cryogenic technologies to be developed in the near term....
Topics: NASA Technical Reports Server (NTRS), CRYOGENIC FLUIDS, CRYOGENICS, FLUID MANAGEMENT, AEROSPACE...
An updated analysis is made of the emergency relief venting of the liquid helium dewar of the Spacelab 2 Infrared Telescope experiment in the event of a massive failure of the dewar guard vacuum. Such a failure, resulting from a major accident, could cause rapid heating and pressurization of the liquid helium in the dewar and lead to relief venting through the emergency relief system. The heat input from an accident is estimated for various fluid conditions in the dewar and the relief process...
Topics: NASA Technical Reports Server (NTRS), CRYOGENIC EQUIPMENT, DIAPHRAGMS (MECHANICS), INFRARED...
The KSC Autonomous Test Engineer (KATE) program has a long history at KSC. Now a part of the Autonomous Cryogenic Load Operations (ACLO) mission, this software system has been sporadically developed over the past 20+ years. Originally designed to provide health and status monitoring for a simple water-based fluid system, it was proven to be a capable autonomous test engineer for determining sources of failure in. the system, As part.of a new goal to provide this same anomaly-detection...
Topics: NASA Technical Reports Server (NTRS), AUTONOMY, CRYOGENIC FLUIDS, CRYOGENICS, COMPUTER PROGRAMS,...
Composite Vessels are now used to store a variety of fluids or gases including cryogenic fluids under pressure. Sudden failure of these vessels under certain conditions can lead to a potentially catastrophic vapor expansion if thermal control is not maintained prior to failure. This can lead to a "Boiling Liquid Expanding Vapor Explosion" or BLEVE.
Topics: NASA Technical Reports Server (NTRS), BOILING, CRYOGENIC FLUIDS, OVERPRESSURE, ISENTROPIC...
The Spacecraft Assembly, Maintenance, and Servicing Study (SAMSS) is an effort to define and verify the most cost effective approach to spacecraft servicing, as a alternative to replacement, in the 1990's and beyond. The intent of the study is to assess the servicing of satellites in all orbit regimes. Elements of a space servicing infrastructure are developed and cost estimates are generated. Readiness is assessed and proof of concept demonstrations are identified. Cryogenic fuel resupply is...
Topics: NASA Technical Reports Server (NTRS), ARTIFICIAL SATELLITES, CRYOGENIC FLUIDS, ORBIT TRANSFER...
The Fluids Testing and Technology Branch is a group that researches and tests efficient ways to use various Cryogenic Fluids, such as Liquid Nitrogen or Liquid Helium, in ground and space systems. Their main goal is to develop new technologies involving Cryogenic temperatures as well as making sure the existing technologies are understood. During my time here a lot of insulation testing has been done which is where insulation systems are tested for cryogenic systems that are in space for long...
Topics: NASA Technical Reports Server (NTRS), PRESSURE REDUCTION, PUMPING, MULTILAYER INSULATION, CRYOGENIC...
689
689
Jun 21, 2010
06/10
by
Weinstein, S. T
texts
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Computer coding program for neutron activation analysis of gamma ray radioactivity for composite materials
Topics: ALUMINUM ALLOYS, LOW TEMPERATURE ENVIRONMENTS, THERMAL EXPANSION, WELDING, RESIDUAL STRESS, SATURN...
The Cryogenic Fluid Management Experiment (CFME) was analyzed to assess the feasibility and advisability of deleting the vapor cooled shield (VCS) from the baseline CFME insulation and pressure control system. Two alternate concepts of CFME insulation and pressure control, neither of which incorporated the VCS, were investigated. The first concept employed a thermodynamic vent system (TVS) to throttle the flow through an internal wall mounted heat exchanger (HX) within the pressure vessel to...
Topics: NASA Technical Reports Server (NTRS), CRYOGENIC FLUIDS, PROPELLANT TRANSFER, THERMODYNAMICS, HEAT...
The topics presented are covered in viewgraph form. The concluded remarks are: (1) advanced cryogenic fluid systems technology is enhancing or enabling to all known transportation scenarios for space exploration; (2) an integrated/coordinated program involving LeRC/MSFC has been formulated to address all known CFM needs - new needs should they develop, can be accommodated within available skills/facilities; (3) all required/experienced personnel and facilities are finally in place - data from...
Topics: NASA Technical Reports Server (NTRS), CRYOGENIC FLUIDS, CRYOGENICS, FLUID MANAGEMENT, SPACE...
The Soldier-Warfighter Operationally Responsive Deployer for Space (SWORDS) rocket is a dedicated small satellite launcher that will minimize danger and complexity in order to allow soldiers in the field to put payloads of up to 25kg into orbit from the field. The SWORDSG2 project is the development of a model, simulation, and ultimately a working application that will control and monitor the cryogenic fluid delivery to the SWORDS rocket for testing purposes. To accomplish this, the project is...
Topics: NASA Technical Reports Server (NTRS), ROCKET LAUNCHERS, SMALL SATELLITE TECHNOLOGY, CRYOGENIC...
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282
Jul 11, 2010
07/10
by
Hill, D. C.; Morris, S. J., Jr
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A report on the computer routine INTERP3 is presented. The routine is designed to linearly interpolate a variable which is a function of three independent variables. The variables within the parameter arrays do not have to be distinct, or equally spaced, and the array variables can be in increasing or decreasing order.
Topics: CRYOGENIC FLUIDS, LIQUID-GAS MIXTURES, TRANSONIC SPEED, TWO PHASE FLOW, WIND TUNNEL TESTS, LASER...
Objective: Provide an overview of SLS DUUS type capability requirements to provide context for possible International Partner collaboration. Addition of a DUUS would greatly increase exploration mission capture and performance margin for cis-Lunar and Near Earth System exploration campaigns.
Topics: NASA Technical Reports Server (NTRS), PROPELLANT MASS RATIO, CRYOGENIC FLUIDS, FLUID MANAGEMENT,...
NASA, military, and commercial satellite users need launch services that are highly reliable, less complex, easier to test, and cost effective. This project has developed a tapered optical fiber sensor for detecting hydrogen. The invention involves incorporating chemical indicators on the tapered end of an optical fiber using organically modified silicate nanomaterials. The Hazardous Gas Detection Lab (HGDL) at Kennedy Space Center is involved in the design and development of instrumentation...
Topics: NASA Technical Reports Server (NTRS), GAS DETECTORS, LEAKAGE, HYDROGEN, CRYOGENIC FLUIDS, THERMAL...
Harsh Environment Protective Housings for Electrical and Fluid Connectors.
Topics: NASA Technical Reports Server (NTRS), ELECTRIC CONNECTORS, HOUSINGS, CRYOGENIC FLUIDS, UMBILICAL...
Big Horn Valve Inc. (BHVI), of Sheridan, Wyoming, won a series of SBIR and Small Business Technology Transfer (STTR) contracts with Kennedy Space Center and Marshall Space Flight Center to explore and develop a revolutionary valve technology. BHVI developed a low-mass, high-efficiency, leak-proof cryogenic valve using composites and exotic metals, and had no stem-actuator, few moving parts, with an overall cylindrical shape. The valve has been installed at a methane coal gas field, and future...
Topics: NASA Technical Reports Server (NTRS), VALVES, CRYOGENIC FLUIDS, FLUID MANAGEMENT, TECHNOLOGY...
The results are presented of a program to perform an analytical assessment of potential methods for replenishing the auxiliary propulsion, fuel cell and life support cryogens which may be aboard an orbiting space station. The fluids involved are cryogenic H2, O2, and N2. A complete transfer system was taken to consist of supply storage, transfer, and receiver tank fluid conditioning (pressure and temperature control). In terms of supply storage, the basic systems considered were high pressure...
Topics: NASA Technical Reports Server (NTRS), AUXILIARY PROPULSION, LIFE SUPPORT SYSTEMS, SPACE STATIONS,...
