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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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A simple transducer is used to measure low rates of convective and conductive heat transfer from a fluid to a cooled surface under steady-state conditions. Temperature drop is measured by two thermocouples imbedded in a rod of low thermal conductivity.
Molecular distribution under free molecular flow conditions within surfaces of simple geometries
Effect of spring clearance nonlinearity on response of simple undamped mass-spring system
Tolerance to vehicle rotation of astronauts using turning and nodding motion of head while performing simple tasks
Simple model and calculation of interplanetary magnetic field
Simple transparent overlay with interpolation scale facilitates accurate, rapid reading of graph coordinate points. This device can be used for enlarging drawings and locating points on perspective drawings.
Simple circuit monitors the frequency of PFM /Pulse Frequency Modulated/ telemetry signals. This discriminator can be used as a constant current integrator in such circuits as linear sweep and time delay.
Individual frames on a photographic film strip in a projector are automatically positioned by a simple circuit. The circuit uses a photodiode that senses frame registry position and a relay that stops the film-advance motor to suspend the film at point of registry.
Electrophysiological implications of model of global function using simple simultaneity - brain function studies with EEG
Uniform axisymmetric laminar and turbulent jets of pure hydrogen issuing into parallel free stream of air with simple chemistry
Simple shock isolator synthesis with bilinear stiffness and variable damping
Simple equation for correlation of turbulent heat transfer to gas flowing through heated tubes
Continuous parameter optimization techniques applied to synthesis of model of human operators in simple two-axis manual control system
Simple, stable and reliable transistor DC FEEDBACK voltage amplifier employing differential input stage coupled with single common emitter stage for gain and drift rate dependence on temperature
A relatively simple injection-guidance system used in conjunction with post-injection midcourse correction will be adequate for lunar and interplanetary missions.
Simple circuit that uses a single transistor to accomplish capacitor storage followed by common-base switching supplies a pulse voltage, higher than that normally available from emitter-follower circuits, to drive a 100-watt transmitter.
Simple coding for K-ary unilateral channels - maximum rate of information transmission over given channel with zero probability of error
Simple wave propagation in MHD system subject to magnetic field