Space radiation shielding with the magnetic field of a cylindrical solenoid
Charged particle radiation shielding characteristics of magnetic fields generated by solenoids
CHARGED PARTICLE↗
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Results for “solenoids”
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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Variable-pulse switching circuit accurately controls solenoid-valve actuations
Solid state circuit generating adjustable square wave pulses of sufficient power operates a 28 volt dc solenoid valve at precise time intervals. This circuit is used for precise time control of fluid flow in combustion experiments.
Gillett, J. D.↗
Solenoid valve design has one moving part
Solenoid valve structure has only one moving part, a ball and spring assembly. This eliminates wear caused by sliding motion contact between stationary and moving parts or between moving parts.
Anderson, J. W.↗
Solenoid hammer valve developed for quick-opening requirements
Quick-opening lightweight solenoid hammer valve requires a low amount of electrical energy to open, and closes by the restoring action of the mechanical springs. This design should be applicable to many quick-opening requirements in fluid systems.
Wrench, E. H.↗
Solenoid valve design minimizes vibration and sliding wear problem
Two-way cryogenic solenoid valve resists damage from vibration and metallic interfacial sliding. The new system features a flat-faced armature guided by a flexure disk which eliminates sliding surfaces and is less subject to contamination and wear.
Gillon, W. A., Jr.↗
Improved solenoid valve design
Modified solenoid valve reduces valve seat loading by eliminating off-center operation of the armature, reducing the poppet size and spring-cushioning its impact, and reducing armature impact with a poppet guide stop.
Evans, J.↗
Electronic position indicator for latching solenoid valves
Electronic position indicator for latching solenoid valves in SNAP 8 ground test facility
Frye, R. J.↗
Solenoid valve performance characteristics studied
Current and voltage waveforms of a solenoid coil are recorded as the valve opens and closes. Analysis of the waveforms with respect to time and the phase of the valve cycle accurately describes valve performance.
Abe, J. T.↗
Electronic position indicator for latching solenoid valves
Electronic circuit connected to solenoid valve coils visually indicates the position of the valve stem. Transient suppression is provided to prevent damaging voltage spikes.
Fischer, R.↗
Flux sensing device using a tubular core with toroidal gating coil and solenoidal output coil wound thereon Patent
Flux gate magnetometer with toroidal gating coil and solenoidal output coil for signal modulation or amplification
Ling, S. C.↗
Solenoid construction Patent
Water cooled solenoid capable of producing magnetic field intensities up to 100 kilogauss
Noble, R. M.↗
Double-acting, rotary-solenoid-actuated shutter
Surveyor camera double acting rotary solenoid actuated focal plane shutter utilizing two blades in parallelogram linkage
Ford, A. G.↗
Solenoid-operated swing-check valve
Modification of spring-loaded swing-check valve for solenoid operation provides low-vacuum swing-check valve which can be operated remotely.
Quattrone, P. D.↗
Solenoid valve, type 1, NASA P/N 20M32258-1 (Carleton P/N 2426-0001-1)
The design, development, and evaluation of a solenoid valve assembly are discussed. The valve is a two-way, normally closed configuration for use as a control element in the metabolic analyzer of biomedical experiments during Skylab missions.
Baczkowski, M. L.↗
Sprag solenoid brake
The development and characteristics of an electrically operated brake are discussed. The action of the brake depends on energizing a solenoid which causes internally spaced sprockets to contact the inner surface of the housing. A spring forces the control member to move to the braking position when the electrical function is interrupted. A diagram of the device is provided and detailed operating principles are explained.
Dane, D. H.↗
Combined effects of hydrazine exposure and endurance testing on solenoid-actuated valve performance
Results are presented from a test program which was conducted to assess the capability of various solenoid-actuated valve design concepts to provide performance characteristics commensurate with long-duration (ten-year) missions to explore the outer planets. The valves were installed in a hydrazine flow test setup and periodically cycled during a nine-month test period under test conditions comparable to anticipated mission operating conditions. In situ valve performance was periodically determined, and leakage was continuously monitored.
Hagler, R., Jr.↗
Latching solenoid for cryogenic valves
Pull-in and Delatching Coils of cryogenic solenoid contain copper and low-resistance, low-temperature-coefficient alloy to limit current at low temperatures.
Wang, W. S.↗
Bistable (latching) solenoid actuated propellant isolation valve
The design, fabrication, assembly and test of a development configuration bistable (latching) solenoid actuated propellant isolation valve suitable for the control hydrazine and liquid fluorine to an 800 pound thrust rocket engine is described. The valve features a balanced poppet, utilizing metal bellows, a hard poppet/seat interface and a flexure support system for the internal moving components. This support system eliminates sliding surfaces, thereby rendering the valve free of self generated particles.
Wichmann, H.↗