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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 847 records · Page 47

All sources NASA NTRS DOE OSTI

NASA NTRS1969

A new interpretation of the Explorer 17 and Explorer 32 ionization gauge data and its implications to orbital analysis

Fluid dynamic response characteristics of Explorer ionization gage data for orbital analysis

Ballance, J. O.↗

NASA NTRS1969

Obtaining hypervelocity acceleration using propellant-lined launch tubes Progress report

Strain gages, nitrocellulose effects, and mathematical models for hypervelocity launch tubes with propellant lining

Rodenberger, C. A.↗

NASA NTRS1969

Direct in situ measurements of wave propagation in the neutral thermosphere.

Atmospheric density variation measurements by density gages on Explorer 32 satellite confirm wave propagation in neutral thermosphere as free internal gravity waves

Newton, G. P.↗

NASA NTRS1969

Quadrupole ionization gauge.

Nonmagnetic ionization gage consisting of quadrupole lens systems excited at HF, discussing electron focusing during operation

Schwarz, H.↗

NASA NTRS1969

A Buried Collector Gauge for Measurements in the 10 (super minus super 11) Torr Pressure Range

Buried collector ionization gage for measurements in 100 billionth torr pressure range using shielded collector to lower X ray current

Melfi, L. T., Jr.↗

NASA NTRS1970

Testing filamentary composites

NOL ring split-dee tensile test has the advantages that the specimen is readily fabricated by winding and the test is performed in a conventional testing machine without special fixtures. Strain gages cannot be mounted, however, and substantial bending moments are introduced.

Dow, N. F.↗

NASA NTRS1970

Water surface depth instrument

Measurement gage provides instant visual indication of water depth based on capillary action and light diffraction in a group of solid, highly polished polymethyl methacrylate rods. Rod lengths are adjustable to measure various water depths in any desired increments.

Davis, Q. C., IV↗

NASA NTRS1970

Detection and location of metal fragments in the human body

Portable electronic device, based on the design of an eddy current gage, detects ferrous and nonferrous metal fragments. Device is more easily transported than X-ray equipment and does not present a radiation hazard.

Brown, R. L.↗

NASA NTRS1970

Adjustable drill bar replaces complex jigs

Adjustable drill bar incorporates a micrometer screw which, when used in conjunction with standard gage blocks, provides rapid method of drill hole location and reduces time and skill requirements for precision drilling on large surfaces. Device picks up oddly dimensioned tool hole points and acts as sine drill bar.

Coventry, J. H.↗

NASA NTRS1970

Electrothermal fracturing of tensile specimens

Pulling device consisting of structural tube, connecting rod, spring-loaded nuts, loading rod, heating element, and three bulkheads fractures tensile specimens. Alternate heating and cooling increases tensile loading by increments until fracturing occurs. Load cell or strain gage, applied to pulling rod, determines forces applied.

Blinn, H. O.↗

NASA NTRS1970

Integrator for on-line measurement of buffet signals

Device determines average rms value of buffet signals by integrating rms signals from strain gages for preselected period of time. System measures average rms value of other transient data, and the upper frequency limit depends on the frequency response of the amplifiers.

Batts, C. N.↗

NASA NTRS1970

Electronic strain-level counter

Counter for aircraft counts and records number of times the strain at a point in a structural member exceeds each of four preset levels. Counter uses 28 volt dc power supply, metallic resistance strain gage bridge as sensor, integrated and solid state circuits for signal processing, and electromechanical counters for data storage and readout.

Pitts, F. L.↗

NASA NTRS1969