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Results for “Transducers”

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 289 records · Page 16

All sources NASA NTRS DOE OSTI

NASA NTRS1968

Results of studies of thermal gradient effects on ceramic transducer sensors used in cosmic dust experiments.

Temperature gradient and thermal effects on ceramic transducer sensors used on spacecraft for cosmic dust experiments

Alexander, W. M.↗

NASA NTRS1968

Performance parameters that characterize a differential-pressure transducer.

Differential pressure transducer performance, itemizing characteristic parameters, noting errors and effects of vibration, mounting strains, etc

Gettelman, C. C.↗

NASA NTRS1968

Pyroelectric transducers for the measurement of heat transfer under conditions of hypersonic flow.

Pyroelectric transducers of barium titanate for heat transfer measurement under hypersonic flow, discussing calibration

Burdick, G. A.↗

NASA NTRS1968

A miniature piezo-junction pressure transducer.

Miniature piezojunction pressure transducer incorporating GaSb and GaAs tunnel diodes

Garfein, A.↗

NASA NTRS1968

Automatic pressure transducer calibration.

Automatic pressure transducer calibration systems

Schuler, A. E.↗

NASA NTRS1968

Miniature piezoelectric transducers for broadband noise measurements.

Miniature piezoelectric ceramic transducer for broad band wall pressure fluctuation measurements, noting frequency response and calibration

Hennen, H. A.↗

NASA NTRS1967

The oscillating properties of electrostatic transducers according to the sell principle

Amplitude and phase of the vibration of the membrane of an electrostatic Sell-transducer are scanned point-for point with a capacitive probe. From the results a number of mean or extreme values characterizing the behaviour of the membrane are derived. These values two compared with respect to their dependence on air pressure, membrane material , surface properties of the back plate, and excitation voltage; optimal values for various applications are found.

K. Geide↗

NASA NTRS1969

Thick transducers used for generating short-duration stress pulses in thin specimens

By generating short stress pulses with thick transducers, the pulse-echo method for determining sound velocities and acoustic attenuation can be applied to thin specimens. The stress pulses enter a specimen where one pulse is reflected several times before a succeeding pulse enters the specimen.

Peterson, R. G.↗

NASA NTRS1969

A magnifying scratch-gage force transducer

Single-component scratch-gage transducer incorporates a unique motion magnification scheme to increase the magnitude of the load measuring scratch approximately 15 times over that of conventional models. It is small, load carrying and high in natural frequency.

Scott, C. E.↗

NASA NTRS1969

Pressure transducer

Pressure-sensitive transducer, consisting of a series of spindle-supported electrically conductive metal washers connected to electrical sensing circuitry, determines the force exerted between a mounting bolt and nut on relatively fragile components.

Baker, C. D.↗

NASA NTRS1969

Simplified theory and transducer potentialities of the ''pinch effect'' in semiconductors

Simplified theory and transducer potentialities of pinch effect in semiconductors

Pittelli, E. E.↗

NASA NTRS1969

Performance of two models of commercial unbonded strain-gage-type absolute pressure transducer at 260 deg C

Hysteresis of strain gage absolute pressure transducer

Lewis, R. D.↗

NASA NTRS1970

Hall effect transducer gives electrical output proportional to meter shaft rotation

Electrical output transducer for measuring angular displacements does not introduce frictional contact between stationary and moving parts. It produces output voltages directly proportional to small rotary shaft displacements.

Smith, D.↗

NASA NTRS1970

Resonant systems for dynamic evaluation of pressure transducers

Tests were conducted with contrived inlet modulated sinusoidal pressure generator to study possible use in calibrating pressure sensors. Results indicate concept is feasible and applicable to transducer evaluation.

Liu, C. Y.↗

NASA NTRS1969