HEAT, DRIVING FORCE AND MEASURING SCALE OF CHEMICAL CHANGE
Calorimetry - heat of chemical change
THERMODYNAMICS↗
SEARCH · Engineering Papers
Results for “driving”
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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Force controlled solenoid drives microweld tester
Solenoid-driven device tests the integrity of a microweld joint between an electronic component lead wire and a wire ribbon by applying tension stress to the joint. Variable measured force is provided when either destructive or nondestructive testing is performed.
Source record↗
Investigation of a 4.0-inch-mean-diameter four-stage reentry turbine for auxiliary power drives
Design analysis of 4.0-inch mean-diameter four- stage reentry turbine for auxiliary power application
MULTISTAGE ROCKET ENGINE↗
Research on reliable and radiation insensitive pulse-drive sources for all-magnetic logic systems final report
Pulsed generator electron tube and semiconductor device minimization and elimination - spacecraft application for all-magnetic logic system
SEMICONDUCTOR DEVICE↗
Flexible drive allows blind machining and welding in hard-to-reach areas
Flexible power and control unit performs welding and machining operations in confined areas. A machine/weld head is connected to the unit by a flexible transmission shaft, and a locking- indexing collar is incorporated onto the head to allow it to be placed and held in position.
Harvey, D. E.↗
Effects of gamma radiation on SCR'S used in switching mode and in application to attitude control motor drive bridge
Effects of cobalt 60 gamma radiation on silicon control rectifiers used in switching mode
SWITCHING↗
Use of phase-locked-loop control for driving ultrasonic transducers
Phase-locked loop used as frequency control system for ultrasonic transducer
ULTRASONIC WAVE TRANSDUCER↗
A stepping motor drive circuit for space applications
Magnetic core circuit for supplying power to bi-directional stepping motors
Thornwall, J. C.↗
Inducer dynamics, partial flow hydraulic turbine drive Interim report, Jul. 1967 - Jan. 1968
Computer prediction of transient performance of low speed inducer driven by hydraulic turbine
King, J. A.↗
Inducer dynamics full-flow, full-admission hydraulic turbine drive Interim report for tasks 1, 2, and 3
Hydrodynamical and mechanical design layout for two-speed hydraulic turbine inducer, computer simulation of pumping system and test facility performance, and study of demonstration unit
Buckmann, P. S.↗
Development of Fastener Technology for Beryllium Point Drive Bolts and Blind Fasteners
Product development of beryllium alloy prestressed fasteners for use in Saturn project
Glackin, James J.↗
Design and development of a brushless, direct-drive solar-array reorientation system Final report - Phase 1
Development of breadboard model of automatic controller for solar array reorientation system for stabilized spacecraft
Jessee, R. D.↗
Slow-speed drives for miniature devices
Hysteresis motor minimizes motor torque variations during shaft revolution when operated at high frequency and with a sinusoidal motor current. Motor speed is stabilized by a feedback servo.
Bahm, E. J.↗
Constant-voltage drive current-steering switch
Two-element voltage control system regulates a magnetic switch consisting of dual ferrite-core shift registers. The system has a magnetic, two-core-per-bit, voltage-controlled shift register.
Caplette, R. K.↗
Small hydraulic turbine drives
Turbine, driven by the fluid being pumped, requires no external controls, is completely integrated into the flow system, and has bearings which utilize the main fluid for lubrication and cooling. Torque capabilities compare favorably with those developed by positive displacement hydraulic motors.
Rostafinski, W. A.↗
Optimal electric-drive system for vehicles
Pulse-width-modulated controller, for vehicle electrically driven by direct current from storage battery and requiring highest possible efficiency in battery use, varies electrical power through silicon controlled rectifiers for permanent magnet dc motors. System is not restricted to dc motors.
Sahinkaya, Y. E.↗
Induction generator produces constant-frequency voltage from variable-speed drive
Two-stage polyphase generator is usable as induction motor operable over range of speeds while powered from constant frequency source. It requires neither slip rings nor special adjustable-frequency power supplies or external reactive sources.
Riaz, M.↗
Hydraulic fluid analysis for antenna drive systems
Hydraulic fluid analysis for reducing wear, and detection of component failure
Logan, W. J., Sr.↗