Results 261 to 270 of about 36,997 (297)
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Proceedings of the IEEE, 1973
High-power klystrons, coupled-cavity traveling-wave tubes (TWT's), and hybrid tubes, all of which utilize the microwave cavity as the basic circuit element, are described. These amplifiers are used in communications, radars, electronic countermeasures, and other applications at power levels from a few hundred watts to megawatts, at frequencies from ...
A. Staprans, E.W. McCune, J.A. Ruetz
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High-power klystrons, coupled-cavity traveling-wave tubes (TWT's), and hybrid tubes, all of which utilize the microwave cavity as the basic circuit element, are described. These amplifiers are used in communications, radars, electronic countermeasures, and other applications at power levels from a few hundred watts to megawatts, at frequencies from ...
A. Staprans, E.W. McCune, J.A. Ruetz
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Astropolitics, 2007
Solar power satellites to beam electric power down to Earth from orbit, or the Moon, is a concept that can potentially provide the world with clean energy. However, the technical, environmental, political, and legal challenges are great. The size and scope of the solar arrays needed by SPS are orders of magnitude beyond the scope of any solar arrays ...
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Solar power satellites to beam electric power down to Earth from orbit, or the Moon, is a concept that can potentially provide the world with clean energy. However, the technical, environmental, political, and legal challenges are great. The size and scope of the solar arrays needed by SPS are orders of magnitude beyond the scope of any solar arrays ...
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HIGH POWER BEAM-PLASMA AMPLIFIER
1964Abstract : Efficiency predictions obtained from the large signal computer theory are given. A Langmuir probe plasma mapping vehicle is described and results given. A coupling experiment showing 20 db of coupling enhancement due to the plasma is disucssed and the design of a second amplifier tube presented.
H. S. Maddix +3 more
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SPIE Proceedings, 1993
FEL power beaming has broad application to space operations. The Rocketdyne Division of Rockwell International Corporation has examined the commercial applications of beamed power from Earth to space using the Radio Frequency LINAC Free Electron Laser (RF FEL) and has determined that there is a substantial addressable market. Rocketdyne's experience in
Michael C. Lampel +5 more
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FEL power beaming has broad application to space operations. The Rocketdyne Division of Rockwell International Corporation has examined the commercial applications of beamed power from Earth to space using the Radio Frequency LINAC Free Electron Laser (RF FEL) and has determined that there is a substantial addressable market. Rocketdyne's experience in
Michael C. Lampel +5 more
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Microwave Beam Powered Mars Airplane
Proceedings of the 25th Intersociety Energy Conversion Engineering Conference, 2005The feasibility of an unmanned Mars airplane that receives its primary power from an RF (microwave) beam located on the Martian surface has been analyzed. An on-board rechargeable electrochemical storage system to be used for special maneuvers, and possible range extension when the airplane is "out of the line of sight" of the microwave source antenna ...
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High-power beam-plasma amplifier
1963 International Electron Devices Meeting, 1963The paper describes the interaction of a pulsed power-perveance beam (5 kv, .4a) and a hydrogen plasma to obtain high gain and high efficiency in the S-band amplifier used. A well-formed, pulsed, linear beam in semiconfined flow is passed along the axis of a hydrogen plasma column immersed in a steady, axial magnetic field. The plasma is generated by a
L.F. Eastman +3 more
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High-Power Particle Beams (BEAMS' 90)
High-Power Particle Beams (BEAMS' 90), 1990Boris N. Breizman, Boris A. Knyazev
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High Power Electron‐beam Welding
Aircraft Engineering and Aerospace Technology, 1981The world's most powerful electron‐beam welding facility was officially commissioned in September, providing 75 k\V of beam power in a vacuum chamber measuring 7 × 3.6 × 3.6m. Single pass welds in steel up to 200m thick may be produced at high speed and prototype fabrications may be welded in the large chamber using numerically controlled manipulating ...
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High-Power Laser Beam Cladding
JOM, 1987This paper reports major advances in the understanding, refinement and application of high-power laser beam cladding. The most important relationships between essential laser process variables and clad characteristics are defined. The unmatched control of energy inherent in laser beam processing has satisfied challenging, requirements in material ...
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