Abstract: A compact transmitting antenna includes a vacuum tube, a charged particle beam gun, a beam timing controller, and a beam speed controller. The charged particle beam gun is positioned for producing a beam of finite length of electrons or ions within the vacuum tube that moves within the vacuum tube at a controlled speed to generate an electromagnetic wave. The beam timing controller is arranged to control at least an on time and an off time of the beam. The beam speed controller is arranged to control speed of the beam within the vacuum tube. A frequency modulator is provided by the compact transmitting antenna, arranged to modulate the beam for carrying voice or data signals to transmit information from the compact transmitting antenna.

Abstract: A geophysical or space-based detection, interrogation, or exploration system includes a compact electric dipole driven transmitter for producing a primary electromagnetic field, and a very sensitive electromagnetic sensing receiver for detecting a secondary electromagnetic field produced by electromagnetic induction in a target responsive to the primary electromagnetic. The electromagnetic sensing receiver is configured to employ computer-controlled software that operates an inverse algorithm that processes receiver data resulting from detection by the electromagnetic sensing receiver of the secondary electromagnetic field, and that performs analysis on results of the inverse algorithm to classify the target in a manner that distinguishes material, shape, or location of the target, and that displays results of the analysis.

Abstract: A pulsed ion current antenna includes an enclosed racetrack having an interior configured to be placed under vacuum. The enclosed racetrack has an ion injection zone, a beam merging zone, a first beam bending zone, a beam return zone, and a second beam bending zone. An ion source is provided at an end of the ion injection zone. Two parallel magnet plates are provided in each of the first and second beam bending zones, configured to produce a respective magnetic field that bends a path of travel of an ion beam within the enclosed racetrack. A plurality of loop coils are configured to generate magnetic fields to shape travel of ions within the enclosed racetrack such that ions from the ion source that are injected through the ion injection zone are merged in the beam merging zone into an ion beam within the enclosed racetrack.

Abstract: A compact transmitting antenna includes a vacuum tube, a charged particle beam gun, a beam timing controller, and a beam speed controller. The charged particle beam gun is positioned for producing a beam of finite length of electrons or ions within the vacuum tube that moves within the vacuum tube at a controlled speed to generate an electromagnetic wave. The beam timing controller is arranged to control at least an on time and an off time of the beam. The beam speed controller is arranged to control speed of the beam within the vacuum tube. A frequency modulator is provided by the compact transmitting antenna, arranged to modulate the beam for carrying voice or data signals to transmit information from the compact transmitting antenna.

Abstract: A transmitting antenna includes a first and a second vacuum tube. Each respective vacuum tube includes at least a grounded cathode, a control grid that receives a respective a respective signal, and a plate electron collector. A first spherical ball is connected by a first conducting wire to the plate electron collector of the first vacuum tube. A second spherical ball connected by a second conducting wire to the plate electron collector of the second vacuum tube. Output of the transmitting antenna is produced by an electromagnetic wave that is radiated from conduction current in each of the first and second conducting wires. In another aspect of the invention, first and second spherical balls are connected by conducting wires to the collectors of respective charged particle beam vacuum tubes in which a charged particle beam gun produces a beam of finite length of electrons or ions within the vacuum tube that moves within the vacuum tube at a controlled speed to generate an electromagnetic wave.

Abstract: An ultra-low or very low frequency communication device composed of: a circuit unit operative to produce an alternating current; and a dipole antenna connected to receive the alternating current and to convert the alternating current into electromagnetic radiation. The antenna is composed of an unshielded radiating conductor and a shielded return conductor connected in series with the radiating conductor, and the return conductor is shielded by a Faraday shield such as a collisionless plasma column that surrounds the return conductor to prevent any electromagnetic radiation from the return conductor.

Abstract: An ultra-low or very low frequency communication device composed of: a circuit unit operative to produce an alternating current; and a dipole antenna connected to receive the alternating current and to convert the alternating current into electromagnetic radiation. The antenna is composed of an unshielded radiating conductor and a shielded return conductor connected in series with the radiating conductor, and the return conductor is shielded by a Faraday shield such as a collisionless plasma column that surrounds the return conductor to prevent any electromagnetic radiation from the return conductor.

Abstract: An explosive device composed of an auxiliary flux compression generator operating to produce a high intensity magnetic field to seed a primary flux compression generator The auxiliary flux compression generator has a first section with a magnetic field supplied by a cylindrical permanent magnet array, the first section is composed of a helical winding having a prescribed pattern configured to convert explosive energy into magnetic energy that will be used as seed magnetic field for the primary flux compression generator.

Abstract: An ultra-low or very low frequency communication device composed of: a circuit unit operative to produce an alternating current; and a dipole antenna connected to receive the alternating current and to convert the alternating current into electromagnetic radiation. The antenna is composed of an unshielded radiating conductor and a shielded return conductor connected in series with the radiating conductor, and the return conductor is shielded by a Faraday shield such as a collisionless plasma column that surrounds the return conductor to prevent any electromagnetic radiation from the return conductor.

Abstract: An explosive device composed of an auxiliary flux compression generator operating to produce a high intensity magnetic field to seed a primary flux compression generator The auxiliary flux compression generator has a first section with a magnetic field supplied by a cylindrical permanent magnet array, the first section is composed of a helical winding having a prescribed pattern configured to convert explosive energy into magnetic energy that will be used as seed magnetic field for the primary flux compression generator.

Abstract: A plasma generator composed of a body of electrically conductive, ionizable material connected to conduct a current pulse and to be converted into a plasma that occupies a large volume in the ionosphere. A plasma generating system composed of a source of a high intensity current pulse and the plasma generator.

Abstract: An ultra-low or very low frequency communication device composed of: a circuit unit operative to produce an alternating current; and a dipole antenna connected to receive the alternating current and to convert the alternating current into electromagnetic radiation. The antenna is composed of an unshielded radiating conductor and a shielded return conductor connected in series with the radiating conductor, and the return conductor is shielded by a Faraday shield such as a collisionless plasma column that surrounds the return conductor to prevent any electromagnetic radiation from the return conductor.

Abstract: An explosive device composed of an explosive annular shaped charge liner having a given configuration; and an initiator configured to detonate said liner according to a selected one of two different jet formation modes.

Abstract: An explosive device composed of: a flux compression generator operative to produce a high intensity electric current when activated; and an electrical payload connected to the generator and constructed to receive the high intensity electric current and cause energy in the current to generate a plate or shaped projectile in the payload and to launch the projectiles into an explosive or insensitive reactive material target for the purpose of initiating the reactive material at single or multiple points.

Abstract: A plasma generator composed of a body of electrically conductive, ionizable material connected to conduct a current pulse and to be converted into a plasma that occupies a large volume in the ionosphere. A plasma generating system composed of a source of a high intensity current pulse and the plasma generator.

Abstract: A hybrid gun device composed of two barrels (1,10) that accept energy from combustion of standard propellant (6), one barrel (10) being operative to produce a high intensity electric current to add accelerating energy to a projectile (7) in the second barrel (1) and at least one coil (8) stage to convert energy between electrical and kinetic to cause the projectile (7) to be launched at hypervelocity.

Abstract: An explosive device composed of: a flux compression generator operative to produce a high intensity electric current when activated; and an electrical payload connected to the generator and constructed to receive the high intensity electric current and cause energy in the current to generate a plate or shaped projectile in the payload and to launch the projectiles into an explosive or insensitive reactive material target for the purpose of initiating the reactive material at single or multiple points.

Abstract: An explosive device composed of: a flux compression generator operative to produce a high intensity electric current when activated; and an electrical payload connected to the generator and constructed to receive the high intensity electric current and cause energy in the current to generate a shaped projectile in the payload and to launch the projectile.

Abstract: A hybrid gun device composed of two barrels (1,10) that accept energy from combustion of standard propellant (6), one barrel (10) being operative to produce a high intensity electric current to add accelerating energy to a projectile (7) in the second barrel (1) and at least one coil (8) stage to convert energy between electrical and kinetic to cause the projectile (7) to be launched at hypervelocity.

Abstract: A gun system for launching a projectile that forms a component of a two-part payload that also includes a pusher that is separable from the projectile. The system includes a barrel, a source of propellant gas to propel the projectile and the pusher through the barrel, and a retarding coil and an accelerating coil, each having a coil axis parallel to the barrel axis and surrounding a projectile passage through the barrel, the retarding coil being disposed closer to the source of propellant gas than the accelerating coil. The retarding coil is configured to generate electromagnetic energy in response to passage of the pusher when being propelled by propellant gas ignition, and the accelerating coil is configured and coupled to impose an accelerating force on the projectile in response to the electromagnetic energy generated by the retarding coil.