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  • 1
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    AC POWER SUPPLIES FOR ION ENGINES (1963)
    In:  Other Sources
    Details
    Publication Date: 2011-08-10
    Description: Ac power supply for use in an electron-bombardment ion rocket engine
    Keywords: CHEMISTRY
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Electric propulsion and its applications to space missions (1981)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: Consideration is given the NASA, Air Force and European electric propulsion programs, the characteristics of primary electric propulsion systems, nuclear electric orbit transfer vehicles, and such topics in the fundamental processes of electrostatic thrusters as sputtering in mercury ion thrusters, the screen hole plasma sheath of an ion accelerator system, and the modelling of ion beam neutralization and nitrogen chemisorption. Also considered are electrostatic thruster components and systems, electromagnetic thrusters such as MPD and RIT systems, electric rail guns and mass drivers, power sources which include solar and nuclear alternatives, power conversion systems and their cooling apparatus, and the environmental interactions between spacecraft and their electric propulsion systems.
    Keywords: ASTRONAUTICS (GENERAL)
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Advanced electrical power system technology for the all electric aircraft (1983)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: The application of advanced electric power system technology to an all electric airplane results in an estimated reduction of the total takeoff gross weight of over 23,000 pounds for a large airplane. This will result in a 5 to 10 percent reduction in direct operating costs (DOC). Critical to this savings is the basic electrical power system component technology. These advanced electrical power components will provide a solid foundation for the materials, devices, circuits, and subsystems needed to satisfy the unique requirements of advanced all electric aircraft power systems. The program for the development of advanced electrical power component technology is described. The program is divided into five generic areas: semiconductor devices (transistors, thyristors, and diodes); conductors (materials and transmission lines); dielectrics; magnetic devices; and load management devices. Examples of progress in each of the five areas are discussed. Bipolar power transistors up to 1000 V at 100 A with a gain of 10 and a 0.5 microsec rise and fall time are presented. A class of semiconductor devices with a possibility of switching up to 100 kV is described. Solid state power controllers for load management at 120 to 1000 V and power levels to 25 kW were developed along with a 25 kW, 20 kHz transformer weighing only 3.2 kg. Previously announced in STAR as N83-24764
    Keywords: AIRCRAFT PROPULSION AND POWER
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Power management and control for space systems (1978)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: Power management and control technology for the large, high-power spacecraft of the 1980's is discussed. Systems weight optimization that indicate a need for higher bus voltages are shown. Environmental interactions that are practical limits for the maximum potential on exposed surfaces are shown. A dual-voltage system is proposed that would provide the weight savings of a high-voltage distribution system and take into account the potential environmental interactions. The technology development of new components and circuits is also discussed.
    Keywords: SPACECRAFT PROPULSION AND POWER
    Type: Future Orbital Power Systems Technol. Requirements; p 195-207
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Synchronous energy technology program (1980)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: The power program in NASA and DOD are discussed with emphasis on the technology for future large space power systems. The structure of the synchronous energy technology program is described and the technologies required for future geosynchronous power stations are defined. The output of the program is to be a series of design data documents to provide design information and to transfer the technology to the involved community.
    Keywords: SPACECRAFT PROPULSION AND POWER
    Type: Synchronous Energy Technol.; p 1-7
    Format: application/pdf
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  • 6
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    Spherical electrode eliminates high-voltage breakdown (1965)
    In:  CASI
    Details
    Publication Date: 2019-05-23
    Description: Spherical electrodes surrounding electrode-dielectric junctions eliminate high-voltage breakdown. The gap between the spherical electrode and the dielectric must be of an optimum size for proper operation. Modified, this electrode should be suitable as a high-voltage feedthrough between various liquid and gaseous media.
    Keywords: ELECTRONIC COMPONENTS AND CIRCUITS
    Type: LEW-155
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    NASA TECHNICAL REPORTS
  • 7
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    Electric propulsion technology (1980)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: The advanced electric propulsion program is directed towards lowering the specific impulse and increasing the thrust per unit of ion thruster systems. In addition, electrothermal and electromagnetic propulsion technologies are being developed to attempt to fill the gap between the conventional ion thruster and chemical rocket systems. Most of these new concepts are exagenous and are represented by rail accelerators, ablative Teflon thrusters, MPD arcs, Free Radicals, etc. Endogenous systems such as metallic hydrogen offer great promise and are also being pursued.
    Keywords: SPACECRAFT PROPULSION AND POWER
    Type: Large Space Systems(Low-Thrust Propulsion Technol.; p 23-30
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    NASA TECHNICAL REPORTS
  • 8
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    Three-phase, high-voltage, high-frequency distributed bus system for advanced aircraft (1983)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: A three phase, high voltage, high frequency distributed bus system for advanced aircraft is discussed. A system model is given. Available components are described. Recommendations are given.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Type: Aircraft Elect. Secondary Power; p 27-35
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 9
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    Direct conversion of infrared radiant energy for space power applications (1982)
    In:  Other Sources
    Details
    Publication Date: 2019-01-25
    Description: A proposed technology to convert the earth radiant energy (infrared albedo) for spacecraft power is presented. The resultant system would eliminate energy storage requirements and simplify the spacecraft design. The design and performance of a infrared rectenna is discussed.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: R and D Associates Proc. of the AFOSR Spec. Conf. on Prime-Power for High Energy Space Systems, Vol. 2; 22 p
    Format: text
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    NASA TECHNICAL REPORTS
  • 10
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    A study of parameters affecting the maximum voltage capabilities of shielded negative dielectric junction vacuum insulators. (1966)
    In:  Other Sources
    Details
    Publication Date: 2018-12-01
    Description: Effectiveness parameters of spherical shield electrode surrounding negative dielectric junction of insulator in high vacuum
    Keywords: ELECTRONIC EQUIPMENT
    Format: text
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    NASA TECHNICAL REPORTS
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