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2 results about "Hall effect thruster" patented technology
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In spacecraft propulsion, a Hall-effect thruster (HET) is a type of ion thruster in which the propellant is accelerated by an electric field. Hall-effect thrusters use a magnetic field to limit the electrons' axial motion and then use them to ionize propellant, efficiently accelerate the ions to produce thrust, and neutralize the ions in the plume. Hall-effect thrusters (based on the discovery by Edwin Hall) are sometimes referred to as Hall thrusters or Hall-current thrusters. The Hall-effect thruster is classed as a moderate specific impulse (1,600 s) space propulsion technology and has benefited from considerable theoretical and experimental research since the 1960s.
Hall-effect thruster system with applied counter-torque
ActiveUS12650115B2Cosmonautic vehiclesCosmonautic propulsion system apparatusElectric current flowMechanical engineering
A Hall effect thruster system includes a thruster body and a diffuser configured to apply a torque to the thruster body during operation. The diffuser applies the torque by ejecting the propellant in a non-axial direction, such as a direction tangent to helical or curvilinear channels formed within a body of the diffuser. The applied torque can be used to counteract a swirl torque that is induced on the thruster body by the ionizing Hall current flowing in an annular channel of the thruster body. This effective counter-torque is useful in deep space applications outside the Earth's magnetic field.
Owner:THE RGT UNIV OF MICHIGAN
Electric thruster with thermionic cathode in oxygen-rich environment
PendingUS20260152296A1Cosmonautic propulsion system apparatusArtificial satellitesChemical physicsEngineering
Electric propulsion systems, including electrostatic ion thrusters, for operation in oxygen containing environments, such as very low Earth orbit, may include an oxygen transport membrane, a cathode, and a thruster. The oxygen transport membrane is used to separate oxygen from other constituents in a feed gas resulting in an oxygen rich gas (or permeate) and an oxygen depleted gas (or retentate). The oxygen depleted gas is routed to the cathode. The oxygen rich feed gas is routed to the thruster, such as a Hall Effect Thruster (HET).
Owner:NORTHROP GRUMMAN SYSTEMS CORP