A note on the variability of temperature as indicated by rocketsonde thermistors.
Temperature profiles variability for data obtained by rocketsonde thermistors launched with small time and spatial separation
Miller, A. J.↗
SEARCH · Engineering Papers
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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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Coulometer battery state-of-charge indicator
Mercury-column electrochemical coulometer is a linear ampere-hour integrating device consisting of a sealed glass tube containing two columns of mercury separated by a gap containing an electrolyte. The drive circuit uses operational amplifier techniques to match nonlinear charge-discharge characteristics of an alkaline battery.
Birchenough, A. G.↗
Evaluation of thoracic impedance plethysmography as an indicator of stroke volume in man
EVALUATION OF SYSTOLIC THORACIC IMPEDANCE CHANGES and duration of ejection
Bache, R. J.↗
Possible relations between meteorite impact and igneous petrogenesis, as indicated by the Sudbury structure, Ontario, Canada
Hypervelocity meteorite impacts by nuclear and chemical explosions
French, B. M.↗
Means for visually indicating flight paths of vehicles between the Earth, Venus, and Mercury Patent
Table structure and rotating magnet system simulating gravitational forces on spacecraft and displaying trajectories between Earth, Venus, and Mercury
Small, J. G.↗
Strapdown inertial attitude-indication evaluations
Gyro test package, dynamic test facility and real time attitude algorithm to investigate operational capabilities of strapdown inertial attitude package
Gilmore, J. P.↗
Electronic ripple indicator
Electronic circuit for monitoring excessive ripple voltage on dc power lines senses voltage variations from few millivolts to maximum of 10 volts rms. Instrument is used wherever power supply fluctuations might endanger system operations or damage equipment. Device is inexpensive and easily packaged in small chassis.
Davidson, J. K.↗
Calibration-interval adjustment indicator - A concept
Circuit, when used with decision table, permits relatively unskilled personnel to maintain effective quality control. Design determines required changes in calibration intervals. Interval readings are recorded to nearest integer, making high precision unnecessary. Specific required performance-history information is discussed.
Hedene, P. S.↗
Observed galactic hard X-ray emission as an indication for cosmic ray heating of instellar HI
Intensity and spectral shape of diffuse X ray emission by galactic disk from cosmic ray heating of interstellar hydrogen
Boldt, E. A.↗
Winch having cable position and load indicators Patent
Design and characteristics of device for showing amount of cable payed out from winch and load imposed
Chandler, J. A.↗
Optical machine tool alignment indicator Patent
Optical gauging system for monitoring machine tool alignment
Boissevain, A. G.↗
Angular displacement indicating gas bearing support system Patent
Gas bearing for model support with capacity for measuring angular displacement of model in bearing
Kersey, E. D., Jr.↗
A study of the relationships between the mechanical response of the tympanic membrane and the electrophysiological indicators of hearing in the bullfrog (Rana catesbeiana)
Mechanical response of frog membrane to stimulating frequencies and electrophysiologically determined hearing areas
Majeau-Chargois, D. A.↗
Wave-induced fluctuations in ionospheric electron content - A model indicating some observational biases
Ionospheric columnar electron content perturbation by plane atmospheric waves
Georges, T. M.↗
The turn rate indicator - Its interpretation as affected by installation and true airspeed
Turn rate gyro installation angle and airspeed effects on instrument reliability, presenting in-flight investigation results relative to turn rate information usefulness under various flight conditions
Jackson, C. T., Jr.↗
The ages of the lunar seas - Apollo data/ geomorphic indices
Apollo lunar sea geomorphic data agreement with Luna 16 data
Ronca, L. B.↗
Perload indicating turnbuckle
Low cost, easily manufactured turnbuckle was developed for applying a predetermined load on strap assemblies. Unit consists of sleeve and nut assembled on turnbuckle that is pulled to predetermined load in tension test machine.
Appleberry, W. T.↗
Noncontacting measuring device to indicate deflection of turbopump internal rotating parts
Noncontacting, nondestructive techniques to measure vibrations and deflections of parts in future LOX and LH2 multistage turbopump prototypes are reported. The measurements include shaft vibration, vibration of turbine wheel and blades, blade clearance, vibration of impellers, value component flutter, and vibration of face seal components. Three techniques were selected for development: ultrasonic Doppler devices, flash X-ray, and light-pipe reflectance.
Hamilton, D. B.↗