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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...
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8122701 |
Electrostatic colloid thruster
An electrostatic colloid thruster for implementing a method of ionizing a liquid is disclosed herein. The electrostatic colloid thruster includes an electrically conductive extractor having a...
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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...
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8074439 |
System, method and apparatus for lean combustion with plasma from an electrical arc
The present invention provides a plasma arc torch that can be used for lean combustion. The plasma arc torch includes a cylindrical vessel, an electrode housing connected to the first end of the...
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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...
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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...
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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...
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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...
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7872848 |
Method of ionizing a liquid and an electrostatic colloid thruster implementing such a method
A method of ionizing a liquid is disclosed herein. The method includes the steps of dispensing an electrically conductive liquid onto an electrically conductive membrane so as to form a liquid film...
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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...
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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...
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7808353 |
Coil system for plasmoid thruster
A coil system for a plasmoid thruster includes a bias coil, a drive coil and field coils. The bias and drive coils are interleaved with one another as they are helically wound about a conical...
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7791260 |
Gas-fed hollow cathode keeper and method of operating same
A gas-fed hollow cathode keeper can reduce ion bombardment erosion by expelling gas through the keeper faceplate. The expelled gas effectively creates a high-pressure “shield” around the keeper suc...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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7530219 |
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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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7270300 |
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...
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7269940 |
Ion engine grid arcing protection circuit
An arcing protection circuit for the screen and accelerator grids of an ion thruster engine includes an impedance, which in one embodiment, is fixed, and in another, is variable, coupled in series...
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7204078 |
Staged emitter-attractor ion drive
An ion drive system for creating a propulsion force or thrust has at least one stage having an emitter and an attractor spaced from the emitter by a gap. An ionizable dielectric media is located...
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7174703 |
Ion thrusting system
An ion thrusting system is disclosed comprising an ionization membrane having at least one area through which a gas is passed, and which ionizes the gas molecules passing therethrough to form ions...
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7114337 |
Air/fuel injection system having cold plasma generating means
A system for injecting an air/fuel mixture into a turbomachine combustion chamber, including a hollow tubular structure for the flow of the air/fuel mixture into the combustion chamber; a fuel...
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7115881 |
Positioning and motion control by electrons, ions, and neutrals in electric fields
This invention deals with novel method and apparatus for positioning and motion control by rapid-response motorless linear motion, angular deflection, and continuous rotational motion utilizing the...
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7075095 |
Plasma accelerator system
A multistage plasma accelerator system includes at least one intermediate electrode between the plasma chamber between electrodes that include each other. An especially good efficiency can be...
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7059111 |
Thruster apparatus and method
A thruster for use with an external power supply. The thruster includes a propellant that exists in a non-gaseous state at standard temperature and pressure and has a melting point Tm, a boiling...
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7041984 |
Replaceable anode liner for ion source
A releasable anode liner that is fitted within the interior of the anode of an ion source. The cover permits electrons to be projected into the anode wherein any insulating deposits adhere to the...
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7002126 |
Projectile steering by plasma discharge
A device and method for guiding or steering projectiles (self-propelled or non-self-propelled), or missiles, and for steering a supersonic projectile, or a missile, having a nose, generally in the...
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6996972 |
Method of ionizing a liquid propellant and an electric thruster implementing such a method
A method of ionizing a liquid propellant is disclosed herein. The method includes the steps of applying an electrical charge to a showerhead, delivering a liquid propellant under pressure into a...
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6964396 |
Automatic accel voltage tracking system for an ion thruster
A voltage tracking system for an ion thruster includes a discharge chamber, a screen grid, an accelerator grid, and an accelerator grid voltage controller. The discharge chamber contains plasma at...
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6960888 |
Method of producing and accelerating an ion beam
A method of producing and accelerating an ion beam comprising the steps of: providing a magnetic field with a cusp that opens in an outward direction along a centerline that passes through a vertex...
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6948305 |
Method and apparatus for balancing the emission current of neutralizers in ion thruster arrays
An apparatus and method for balancing the emission current of neutralizers in ion thruster arrays is disclosed that allows a single power processing unit (PPU) to be used to drive the array. A...
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6892525 |
Micropump-based microthruster
A thruster for providing thrust for spacecraft positioning, which has a propellant reservoir for storing propellant, a reaction chamber for discharging a vapor for providing thrust, a pump module...
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6834492 |
Air breathing electrically powered hall effect thruster
An air/atmosphere breathing electrically powered Hall effect thruster including a thruster duct having an inlet, an exit, and a discharge zone between the inlet and the exit for receiving air from...
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6786035 |
Ion thruster grid clear
The invention discloses a method and device for clearing an ion thruster grid of contaminants. A typical method includes applying a power supply to a grid to clear contaminants, monitoring an...
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6735935 |
Pulsed hall thruster system
A pulsed Hall thruster system includes a Hall thruster having an electron source, a magnetic circuit, and a discharge chamber; a power processing unit for firing the Hall thruster to generate a...
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6644014 |
Electric thruster and thrust augmenter
An electric thruster and thrust augmenter is disclosed in which intaken or compressed atmospheric gas or reaction thruster exhaust is passed through a gap space between electrodes so that the...
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