A viscous ring damper for a freely precessing satellite.
Viscous ring damper for removing wobble motion of spin-stabilized satellite analyzed by studying energy dissipation
VISCOUS DAMPING↗
SEARCH · Engineering Papers
Results for “RINGS - STRESSES”
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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Pulsed transmission and ringing phenomena in a warm magnetoplasma.
Group velocity of wave packet propagating radially across plasma immersed in static axial magnetic field, examining ringing phenomena due to pulsed transmission
PLASMA-ELECTROMAGNETIC INTERACTION↗
Nonlinear flexural vibrations of thin circular rings.
Nonlinear flexural vibrations of thin circular rings analyzed, using Galerkin procedure on motion equations
VIBRATION MODE↗
Measurement of saturation induced optical nonreciprocity in a ring laser plasma.
Saturation induced optical nonreciprocity in He-Ne ring laser plasma, eliminating frequency locking by using Faraday effect
GAS LASER↗
Design concepts using ring lasers for frequency stabilization
Laser frequency stabilization methods are based on a frequency discriminant which generates an unambiguous deviation signal used for automatic stabilization. Closed-loop control stabilizes cavity length at a null point. Some systems have a stabilized ring laser using a piezoelectric dither and others use a Doppler gain tube.
Mocker, H.↗
Wear studies made of slip rings and gas bearing components
Neutron activation analysis techniques were employed for the study of the wear and performance characteristics of slip ring and rotor assemblies and of the problems arising from environmental conditions with special reference to surface contamination. Results showed that the techniques could be successfully applied to measurement of wear parameters.
Furr, A. K.↗
Aluminum and stainless steel tubes joined by simple ring and welding process
Duranel ring is used to join aluminum and stainless steel tubing. Duranel is a bimetal made up of roll-bonded aluminum and stainless steel. This method of joining the tubing requires only two welding operations.
Townhill, A.↗
Lead plated aluminum ring provides static high pressure seal for large diameter pressure vessel
Lead plated aluminum ring provides a positive static seal for a large diameter pressure vessel for use in a hazardous environment at cryogenic temperatures with high pressure fluid flow. This design can be used in high and low pressure lines of any diameter for any fluid, with appropriate material modification.
Locke, J. N.↗
Fluorocarbon seal replaces metal piston ring in low density gas environment
Reinforced fluorocarbon cupseal, which provides an integral lip-type seal, replaces the metal piston rings in piston-cylinder configurations used in the compression of low density gases. The fluorocarbon seal may be used as cryogenic compressor piston seals.
Morath, W. D.↗
Honeycomb seal backing ring increases turbopump disk life
Turbopump disk life increased by thin, relatively rigid metal backing ring installed to the honeycomb seal. The aerodynamic and friction damping provided by this modification eliminates first-stage disk cracking.
Brooks, W. S.↗
Nonreciprocal gain control for ring laser
Nonreciprocal gain control is used in a ring laser where the two contracirculating beams may have differing intensities because of the residual Faraday rotation and other secondary nonreciprocal effects.
Dueker, G.↗
Effect of Reynolds number on slosh damping by flat ring baffles
Effect of Reynolds number on slosh damping by flat ring baffles
BAFFLE↗
An Evaluation of Possible Relationships Between Solar Activity and Tree-Ring Growth in Western North America Semiannual Report
Relation between solar activity and tree ring growth in western North America
TREE↗
Rotating emission ring in binary systems
Rotating emission ring in terms of stability of periodic orbits in restricted three-body problem for binary systems
SPECTRAL EMISSION↗
Effectiveness of flexible and rigid ring baffles for damping liquid oscillations in large-scale cylindrical tanks
Effectiveness of lightweight flexible and rigid ring baffles for damping liquid oscillations in large scale cylindrical tanks
LIQUID SLOSHING↗
Automated Nose Fairing Design-Ring and Skin Construction
Computer program for optimizing design of ring-stiffened sheet metal nose fairings
COMPUTER PROGRAM↗
A ring radio telescope for communication with extraterrestrial civilizations
Ring radio telescope and antenna array for interplanetary communication
ANTENNA ARRAY↗
Interaction of a ring-reinforced shell and a fluid medium
Transient dynamic response of periodically ring- reinforced, infinitely long, circular cylindrical shell to uniform pressure applied through surrounding acoustic medium
CYLINDRICAL SHELL↗