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| Number | Title | Issue Date |
| 8136340 | Lateral flow high voltage propellant isolator A high voltage propellant isolator includes at least two different types of isolator rings or segments, in alternating lateral arrangement, that direct the flow of propellant, such as xenon gas, in a tortuous path through the isolator. ... | 03/20/2012 |
| 8109075 | Lateral flow high voltage propellant isolator A high voltage propellant isolator includes at least two different types of isolator rings or segments, in alternating lateral arrangement, that direct the flow of propellant, such as xenon gas, in a tortuous path through the isolator. ... | 02/07/2012 |
| 8024917 | Multi-functional power supply for a hall thruster A multi-functional power supply system for a Hall thruster including a thruster assembly for providing a plasma discharge and a cathode assembly for providing electrons. The cathode assembly includes an emitter, a keeper with a current limiting device, and a heater.... | 09/27/2011 |
| 7926257 | Advanced pulsed plasma thruster with high electromagnetic thrust A pulsed plasma thruster provides for an advanced lightweight design with solid propellant and predominately electromagnetic thrust in a coaxial geometry. Electromagnetic forces are generated in a plasma by current flowing from a small central electrode to an electr... | 04/19/2011 |
| 7926258 | Advanced pulsed plasma thruster with high electromagnetic thrust A pulsed plasma thruster provides for an advanced lightweight design with solid propellant and predominately electromagnetic thrust in a coaxial geometry. Electromagnetic forces are generated in a plasma by current flowing from a small central electrode to an electr... | 04/19/2011 |
| 7870719 | Plasma enhanced rapidly expanded gas turbine engine transition duct A plasma enhanced rapidly expanded duct system includes a gas turbine engine inter-turbine transition duct having radially spaced apart conical inner and outer duct walls extending axially between a duct inlet and a duct outlet. A conical plasma generator produces a... | 01/18/2011 |
| 7836679 | Lateral flow high voltage propellant isolator A high voltage propellant isolator includes at least two different types of isolator rings or segments, in alternating lateral arrangement, that direct the flow of propellant, such as xenon gas, in a tortuous path through the isolator. ... | 11/23/2010 |
| 7827779 | Liquid metal ion thruster array A Liquid Metal Ion Thruster (LMIT) has a substrate having a plurality of pedestals, one end of the pedestal attached to the substrate, and the opposing end of the pedestal having a tip, the pedestals having grooves and the substrate also having grooves coupled to ea... | 11/09/2010 |
| 7690187 | Modular micropropulsion device and system A modular propulsion system includes an array of micromachined field effect electrostatic propulsion devices, each of which is an assembled micromachined device including an array of field effect electrostatic propulsion thrusters, a fuel container of propellant usi... | 04/06/2010 |
| 7634903 | Ion impulse engine An ion engine which produces thrust by charging a propellant vapor in an electric field and then reversing the polarity of the electric field. The electric field forces the charged nuclei close to the unenergized electrode. When the electrode is energized as a posit... | 12/22/2009 |
| 7631482 | Multiple phase power supply for rocket engines Conventional power supplies that actify the grids of electric rockets use an output capacitor to smooth the output DC voltage signal. Large capacitors tend to store a great amount of energy. Arcing acts to transfer this energy to create a well or pit on an accelerat... | 12/15/2009 |
| 7624566 | Magnetic circuit for hall effect plasma accelerator A Hall effect plasma accelerator includes inner and outer electromagnets, circumferentially surrounding the inner electromagnet along a thruster centerline axis and separated therefrom, inner and outer magnetic conductors, in physical connection with their respectiv... | 12/01/2009 |
| 7621115 | Hall-type electric propulsion The present invention provides a hall-type electric propulsion that exhibits both overheating protection and operational stability, thereby simultaneously solving the problem of waste heat, which worsens with micronization, and the problem of discharge current oscil... | 11/24/2009 |
| 7584601 | Charged particle thrust engine Several methods of increasing the thrust and energy efficiency of charged particle jet engines operating in a gaseous or liquid medium have been developed. We identify the three main components of charged particle thrust generation and show how to take maximum advan... | 09/08/2009 |
| 7581380 | Air-breathing electrostatic ion thruster An improved air-breathing electrostatic ion thruster specially configured for use in low-Earth atmosphere comprises a housing having an electrically conductive inner surface defining an ionization chamber. Ambient atmospheric gas passes through a forward screen elec... | 09/01/2009 |
| 7543441 | Hall-effect plasma thruster A plasma thruster having a magnetic circuit of a downstream bottom plate from which arms protrude. At least one of the arms includes a permanent magnet. The mass, overall dimensions, electricity consumption, and cost of the thruster are thereby reduced. ... | 06/09/2009 |
| 7516610 | Scalable flat-panel nano-particle MEMS/NEMS thruster A scalable flat-panel nano-particle MEMS/NEMS thruster includes a grid having a plurality of electrodes to establish electrical fields. A liquid is disposed in a liquid reservoir of the grid. The liquid is positioned within the electrical fields. A plurality of nano... | 04/14/2009 |
| 7509795 | Systems and methods for plasma propulsion A plasma propulsion system for aerospace and other applications is disclosed in which an ionized fluid is accelerated through the system by an electric field. The electrons separated from the ionized fluid are accelerated in a direction opposite the ionized flow. A ... | 03/31/2009 |
| 7506497 | Electric propulsion device for high power applications An electric propulsion device is disclosed having an anode and a cathode. The propulsion device includes a discharge annulus having the anode adjacent an end region thereof. At least one inlet aperture is adjacent the anode, the aperture(s) having propellant gas flo... | 03/24/2009 |
| 7500350 | Elimination of lifetime limiting mechanism of hall thrusters A Hall thruster includes inner and outer electromagnets, with the outer electromagnet circumferentially surrounding the inner electromagnet along a centerline axis and separated therefrom, inner and outer poles, in physical connection with their respective inner and... | 03/10/2009 |
| 7461502 | Spacecraft thruster A thruster has a chamber defined within a tube. The tube has a longitudinal axis which defines an axis of thrust; an injector injects ionizable gas within the tube, at one end of the chamber. A magnetic field generator with two coils generates a magnetic field paral... | 12/09/2008 |
| 7454893 | Electro-thermal nanoparticle generator A thermo-chemical nanoparticle generator for the controlled production of nanoparticles, and a method of controllably producing nanoparticles are provided. The combustion of a carbon based propellant under the controlled variation of combustion parameters (temperatu... | 11/25/2008 |
| 7420182 | Combined radio frequency and hall effect ion source and plasma accelerator system This invention features a combined radio frequency (RF) and Hall Effect ion source and plasma accelerator system including a plasma accelerator having an anode and a discharge zone, the plasma accelerator for providing plasma discharge. A gas distributor introduces ... | 09/02/2008 |
| 7395656 | Dual mode hybrid electric thruster An invention is provided for a dual mode hybrid electric thruster propulsion system. The dual mode hybrid electric thruster provides low thrust using ion/plasma exhaust only, and high thrust by mixing a neutral molecular gas with the ion/plasma exhaust. The dual mod... | 07/08/2008 |
| 7372056 | LPP EUV plasma source material target delivery system An EUV light generation system and method is disclosed that may comprise a droplet generator producing plasma source material target droplets traveling toward the vicinity of a plasma source material target irradiation site; a drive laser; a drive laser focusing opt... | 05/13/2008 |
| 7368741 | Extreme ultraviolet light source The present invention provides a reliable, high-repetition rate, production line compatible high energy photon source. A very hot plasma containing an active material is produced in vacuum chamber. The active material is an atomic element having an emission line wit... | 05/06/2008 |
| 7365351 | Systems for protecting internal components of a EUV light source from plasma-generated debris Systems and methods are disclosed for protecting an EUV light source plasma production chamber optical element surface from debris generated by plasma formation. In one aspect of an embodiment of the present invention, a shield is disclosed which comprises at least ... | 04/29/2008 |
| 7365349 | EUV light source collector lifetime improvements An apparatus and method for cleaning a plasma source material compound from a plasma produced EUV light source collector optic which may comprise reacting the plasma source material compound with hydrogen to form a hydride of the plasma source material from the plas... | 04/29/2008 |
| 7365518 | Ion engine power supply A power supply for an ion engine comprises a multiphase alternator and a power converter comprising a voltage multiplier coupled to each phase of the alternator. Each voltage multiplier comprises one or more staged voltage doublers. The alternator phases may be coup... | 04/29/2008 |
| 7361918 | High repetition rate laser produced plasma EUV light source An EUV light source apparatus and method are disclosed, which may comprise a pulsed laser providing laser pulses at a selected pulse repetition rate focused at a desired target ignition site; a target formation system providing discrete targets at a selected interva... | 04/22/2008 |
| 7354021 | Magnet for an ionic drive for space vehicles A toroidally shaped magnetic device with distortion-free exit and access ports provides toroidal magnetic ionic drive systems for vehicles that achieve a more operationally efficient, uniform and stronger radial magnetic field. This is accomplished by magnetizing a ... | 04/08/2008 |
| 7355191 | Systems and methods for cleaning a chamber window of an EUV light source Systems and methods are disclosed for cleaning a chamber window of an extreme ultraviolet (EUV) light source. The window may have an inside surface facing a chamber interior and an opposed outside surface and the light source may generate debris by plasma formation.... | 04/08/2008 |
| 7347294 | Power system for electrically powered land vehicle The power system for an electrically powered land vehicle extracts electrons from ambient air to generate adequate electrical power to operate the land vehicle electrical energy production and propulsion system. The extracted electrons generate enough electrical pow... | 03/25/2008 |
| 7334394 | Localized arc filament plasma actuators for noise mitigation and mixing enhancement A device for controlling fluid flow. The device includes an arc generator coupled to electrodes. The electrodes are placed adjacent a fluid flowpath such that upon being energized by the arc generator, an arc filament plasma adjacent the electrodes is formed. In tur... | 02/26/2008 |
| 7323703 | EUV light source An apparatus and method is described which may comprise a plasma produced extreme ultraviolet (“EUV”) light source multilayer collector which may comprise a plasma formation chamber; a shell within the plasma formation chamber in the form of a collector shape ha... | 01/29/2008 |
| 7317196 | LPP EUV light source An apparatus and method is described for effectively and efficiently providing plasma irradiation laser light pulses in an LPP EUV light source which may comprise a laser initial target irradiation pulse generating mechanism irradiating a plasma initiation target wi... | 01/08/2008 |
| 7309871 | Collector for EUV light source An apparatus/method may comprise, a multi-layer reflecting coating forming an EUV reflective surface which may comprise an inter-diffusion barrier layer which may comprise a carbide selected from the group ZrC and NbC or a boride selected from the group ZrB2 | 12/18/2007 |
| 7306189 | System and method for an ambient atmosphere ion thruster A system and a method for an ambient atmosphere ion thruster having a pair of permeable electrical members for accelerating ambient atmosphere ions which enter the thruster due to a craft's relative velocity. Neutral ambient atmosphere molecules in the intake mass f... | 12/11/2007 |
| 7302792 | Pulsed plasma thruster and method of making A pulsed plasma thruster (PPT) and a method of making the pulsed plasma thruster are disclosed. The PPT includes no moving parts and is able to achieve a small size. The PPT is also designed to facilitate easy and rapid manufacture. The process for making the PPT us... | 12/04/2007 |
| 7291853 | Discharge produced plasma EUV light source An DPP EUV source is disclosed which may comprise a debris mitigation apparatus employing a metal halogen gas producing a metal halide from debris exiting the plasma. The EUV source may have a debris shield that may comprise a plurality of curvilinear shield members... | 11/06/2007 |
