Abstract: A pollution control system for an internal combustion engine comprises a mechanism for separating air from the environment into nitrogen enriched air and oxygen enriched air. The nitrogen enriched air is introduced to an internal combustion engine, thereby reducing engine combustion temperature and concomitantly reducing oxides of nitrogen (NO.sub.x). A mechanism is also provided for introducing oxygen enriched air to the exhaust products of the internal combustion engine, the mixing of the exhaust products with oxygen enriched air minimizes pollution.
Abstract: The flying wedge clutch assembly is a speed actuated coupling device that provides low speed axial load and torque transmission and disengages for increased shaft motion at higher speeds. The flying wedge clutch assembly is a compact and lightweight design, roughly equivalent to a conventional ball bearing assembly in a typical turbopump application. Advantageously, the flying wedge clutch assembly can be used in high speed rotating machines with radial hydrostatic bearings eliminating the speed and life limitations normally attributed to rolling element bearings.
July 15, 1994
Date of Patent:
April 23, 1996
Rockwell International Corporation
Roger E. Berenson, William C. Bowling, Jr., Brian W. Lariviere, Maynard L. Stangeland
Abstract: A quasi-passive regenerative fuel cell system in accordance with the invention utilizes hydrogen that is stored in a metal hydride form. Advantageously, this embodiment reduces the system's operating pressures from roughly 21 MPa (3,000 psia) to roughly 2.1 MPa (300 psia), when fully charged, and eliminates the need for gaseous oxygen storage altogether. All oxygen consumed by the fuel cell system can be extracted directly from the surrounding air. All oxygen produced by the electrolyzer is, in turn, vented back into the atmosphere.
Abstract: An ultra-passive, variable pressure, regenerative fuel cell system in accordance with the invention utilizes a single gaseous hydrogen storage tank that encloses a plurality of smaller gaseous oxygen storage tubes. This design effectively eliminates the need for active pumping elements to protect the fuel cell's anode surface. A single heating/cooling coil, inside the gaseous hydrogen storage tank, is used to prevent: (a) icing inside the storage tanks due to isentropic expansion during electrical power generation, or (b) overheating of gases due to isentropic compression during electrical recharging operations. Advantageously, the invention also reduces the overall weight and mechanical complexity of the fuel cell system, thereby improving system reliability.
Abstract: This invention provides an easily removable support clip for a solar receiver panel tube. A key feature of this concept is its easy assembly and disassembly without requiring access to the back side of the panel. Another key feature is the design of the clip can accommodate very severe thermal transients without exceeding the material's capacity to sustain these strains.
Abstract: A phase only spatial light modulating device for variably changing the phase of light passing through the device without changing the polarization of the light. Two analog state ferroelectric liquid crystal phase only spatial light modulators are placed such that their smectic layers are orthogonal to each other. The angle of the molecules in the two modulators is controlled to be at the same angle. Whereby light passing through both of the modulators obtains a phase delay for arbitrary polarized input light without amplitude modulation or change in polarization state.
Abstract: The passive wind profilometer measures wind transverse to a line of sight as a function of range. Schlieren which are natural occurrences in wind act as refracting lenses which move along with the wind. The patches of refracted light are detected by use of a light-intensity-sensitive television. camera and a microprocessor. The range of the schlieren are determined from the scale size of the refracted patches of light. The microprocessor, using a specific algorithm for processing the light intensity data, then statistically compares the positions of the schlieren at different times to determine the wind velocity.
Abstract: A method of shaping and polishing the surface of a polycrystalline diamond including the steps of diffusion smoothing the diamond surface with hot reactive metals, shaping the smoothed diamond surface by laser ablation using a pulsed laser beam, and ion-beam assisted polishing the ablated diamond surface to optical smoothness. The polished diamond can be used for high quality optics.
Abstract: Method for destroying radioactive graphite and silicon carbide in fuel elements containing small spheres of uranium oxide coated with silicon carbide in a graphite matrix, by treating the graphite fuel elements in a molten salt bath in the presence of air, the salt bath comprising molten sodium-based salts such as sodium carbonate and a small amount of sodium sulfate as catalyst, or calcium-based salts such as calcium chloride and a small amount of calcium sulfate as catalyst, while maintaining the salt bath in a temperature range of about 950.degree. to about 1,100.degree. C. As a further feature of the invention, large radioactive graphite fuel elements, e.g. of the above composition, can be processed to oxidize the graphite and silicon carbide, by introducing the fuel element into a reaction vessel having downwardly and inwardly sloping sides, the fuel element being of a size such that it is supported in the vessel at a point above the molten salt bath therein.
Abstract: A design of a power plant which uses hydrocarbon fuels in conjunction with solar power to produce electricity. The power plant consists of an array of heliostats for concentrating sunlight on a central solar receiver. The heat energy thus gathered is used to create steam which runs a steam turbine. Steam to run the steam turbine can alternately or modularly be obtained from the exhaust gas of a turbo-burner and fuel added to a furnace. The solar energy gathered may be stored as hot fluid in a thermal storage tank or used immediately in the power plant. A thermal shield may be employed over the solar central receiver to insulate the solar central receiver, provide leak and fire protection and shield the solar central receiver from solar radiation.
Abstract: A hydrostatic bearing having two axial grooves on opposite sides of the bearing for breaking the rotational symmetry in the dynamic force coefficients thus reducing the whirl frequency ratio and increasing the damping and stiffness of the hydrostatic bearing.
Abstract: A method of preparing active, sinterable, finely-divided plutonium oxide (PuO.sub.2) powder from plutonium metal is disclosed. The process yields plutonium fissile material which can be easily blended to form a uniformly homogeneous powder for the fabrication of high-quality light water reactor ceramic fuel pellets. Such homogeneous fuels are required to prevent hot spots from developing in a reactor using the fuel.
Abstract: A generator for producing a flow of excited oxygen in the singlet delta electronic state comprising a vacuum chamber, an inlet feed system, an internal reaction zone, a method for cooling said reaction zone, an outlet system for separating the gas from the liquid, and a means for interfacing this device to a lasing device for directing the flowing singlet delta gas into a laser cavity.
Abstract: This invention is for magnetic actuators which are composed of individually controlled layers. Each layer comprises a stationary sheet 34, a movable sheet 30 and a roller 40 between the sheets. Each layer may either have ribs 32 or sheet portions having conductors, remanent portions or permeable portions which apply a magnetic force against the roller to move the sheets. The magnetic force may be between a current carrying roller and a current carrying rib or sheet portion, a current carrying roller and a remanent rib or sheet portion, a current carrying roller and a permeable rib or sheet portion, a magnetic roller and a current carrying rib or sheet portion, or a permeable roller and a current carrying rib or sheet portion. The sheets in each layer may be moved in parallel or normal directions. When the layers are stacked, actuators may be made. The actuators can be controlled in pairs or larger groups to position and move objects and motor shafts. Thus motors generators and actuators can be made.
Abstract: A molten salt process vessel for treatment of hazardous materials such as explosive or propellant waste, employing a tall, thin vessel with sufficient height that salt splash from the molten salt at the bottom of the vessel can be controlled and hard salt deposits are prevented from forming on the walls which restrict the gas outlet. The vessel, e.g. of cylindrical shape, has an increased height to diameter ratio in the range of about 7:1 to about 12:1, to give additional clearance. As an additional feature the vessel diameter can also be adjusted to create a "necked-down" region just below the gas outlet duct adjacent the top of the vessel to increase product gas velocity of the gas containing entrained salt particles, to prevent sticking of such particles to the vessel walls and restricting the gas outlet duct.
Abstract: A feed system for feeding solid propellant or explosive energetic materials, e.g. in the form of chunks, into a molten salt furnace for destruction of said materials by oxidation with air, while substantially avoiding the danger of detonation of such materials during feeding. The system comprises a feed hopper separated from the molten salt furnace by a barrier such as a concrete wall. The feed hopper is preferably vibrated to move the chunks of waste to an inclined chute which passes through a penetration in the barrier to the furnace, the chute also being preferably vibrated to facilitate passage of the waste material. The chunks of waste are discharged from the inclined chute either directly into the molten salt bath in the furance, or added incrementally thereto by a lock valve arrangement.
September 27, 1993
Date of Patent:
February 21, 1995
Rockwell International Corporation
Richard L. Gay, Jerold Guon, John C. Newcomb, Albert E. Stewart
Abstract: Diffusion resistant refractory such as alumina for containment of destructive fluorine and fluorine compounds in the molten salt oxidation of fluorine-containing organic waste, formed of a porous refractory such as porous alumina impregnated with a salt such as sodium carbonate, which is non-reactive with the refractory and compatible with the molten salt reaction medium, thereby effectively blocking diffusion baths for fluorine and its compounds from the molten salt bath through the refractory. Conventional refractories such as alumina bricks containing about 1 to about 25% open porosity can be placed in a molten liquid salt such as molten sodium carbonate, in a vessel which can be pressurized to force the molten sodium carbonate into the pores of the alumina brick to impregnate same and form alumina brick resistant to diffusion of fluoride-rich molten salt.