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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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At least 1,567 records · Page 87
All sourcesNASA NTRSDOE OSTI
DOE OSTI2012

Induction heaters used to heat subsurface formations

A heating system for a subsurface formation includes an elongated electrical conductor located in the subsurface formation. The electrical conductor extends between at least a first electrical contact and a second electrical contact. A ferromagnetic conductor at least partially surrounds and at least partially extends lengthwise around the electrical conductor. The electrical conductor, when energized with time-varying electrical current, induces sufficient electrical current flow in the ferromagnetic conductor such that the ferromagnetic conductor resistively heats to a temperature of at least about 300.degree. C.

47 OTHER INSTRUMENTATION↗
DOE OSTI2012

Miniaturized Multi-Band Antenna Design via Element Collocation and Inductive Feed Loading

In a FY09 SDRD project, four separate antennas were designed to receive signals of interest covering a broad range of frequencies. While the elements exceeded specifications, the array footprint is substantial. Research performed by the CU Microwave Active Antenna Group in collaboration with RSL, showed promise in realizing a reduced structure. This work will expand upon this previous research. This project will result in a prototype quad-band antenna.

47 OTHER INSTRUMENTATION↗
DOE OSTI2012

Low inductance power electronics assembly

A power electronics assembly is provided. A first support member includes a first plurality of conductors. A first plurality of power switching devices are coupled to the first support member. A first capacitor is coupled to the first support member. A second support member includes a second plurality of conductors. A second plurality of power switching devices are coupled to the second support member. A second capacitor is coupled to the second support member. The first and second pluralities of conductors, the first and second pluralities of power switching devices, and the first and second capacitors are electrically connected such that the first plurality of power switching devices is connected in parallel with the first capacitor and the second capacitor and the second plurality of power switching devices is connected in parallel with the second capacitor and the first capacitor.

42 ENGINEERING↗
DOE OSTI2013

Induction forming of metal components with slotted susceptors

A laminated tooling apparatus includes a first tooling die, a first susceptor carried by the first tooling die and having at least one straight susceptor portion and at least one angled susceptor portion adjacent to the straight susceptor portion, a first plurality of susceptor slots extending through the at least one angled susceptor portion of the first tooling die, a second tooling die adjacent to the first tooling die, a second susceptor carried by the second tooling die and having at least one straight susceptor portion and at least one angled susceptor portion adjacent to the straight susceptor portion; and a second plurality of susceptor slots extending through the at least one angled susceptor portion of the second tooling die.

42 ENGINEERING↗