Radiation properties of cylindrical shells.
Acoustic radiation efficiency of cylindrical shells, noting peak at ring frequency due to flexure wave speed increase
ACOUSTIC RADIATION↗
SEARCH · Search NASA
Results for “flexures”
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.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Effect of face-sheet stiffness on buckling of curved plates and cylindrical shells of sandwich construction in axial compression
Effect of face sheet flexural stiffness on buckling of elastic curved plates and cylindrical shells of sandwich construction in axial compression
CYLINDRICAL SHELL↗
Mount enables precision adjustment of optical-instrumentation mirror
Mirror mount assembly allows the plane of a mirror to be adjusted through small angles about two orthogonal axes. The assembly, which has a mirror mount with two independently adjustable flexure joints, allows independent precise adjustment of the mirror mount with respect to each axis.
Source record↗
Some Studies on the Nonlinear Dynamic Response of Shell-type Structures
Nonlinear flexural vibrations of thin walled circular cylinders, and buckling of shallow, conical and spherical shells subjected to uniform, impulsive pressures
CONICAL SHELL↗
Development of a 425 foot diameter passive communication satellite with self-erecting properties Quarterly progress report no. 9
Flexure rigidity and tensile strength of Dacron- glass yarn and fiberglass
DACRON↗
Ultrasonic wrench produces leaktight connections
Ultrasonic wrench system produces leaktight seals in flared tubing connections. It induces a flexural vibration mode in the coupling nut. The system consists of a frequency converter, a junction box, and wrench assembly.
Blaise, H. T.↗
Mechanical properties of wire insulation automatically determined
Three separate mechanisms test the insulation on electrical wire specimens for mechanical resistance to flexure, abrasion or wear, and vibration. The test mechanisms perform the evaluation tests on insulated wire specimens in a chamber which can be controlled to simulate space or spacecraft cabin environments.
Dawn, F. S.↗
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.↗
Mechanical behavior of a continuous filament carbon composite.
Mechanical properties of continuous carbon filament/graphite binder composite including tensile, compressure, flexure, fatigue and shear properties
COMPOSITE MATERIAL↗
Resonant oscillations of a flexible satellite in an elliptic orbit.
Librational and flexural resonances induced in satellite whose center of mass is moving in planar elliptic orbit
RESONANT FREQUENCY↗
Mechanical response at cryogenic temperatures of selected reinforced plastic composite systems.
Structural reinforced plastic composite materials for cryogenic temperature application evaluated noting tensile, compression, shear, flexural and bearing properties
MECHANICAL PROPERTY↗
Mechanisms for Engineering Design.
Book on functional mechanisms for engineering design, presenting kinematic characteristics of output motion, planar linkage and spatial cycloidal crank and flexural mechanisms
KINEMATICS↗
Conceptual hermetically sealed elbow actuator
Electrically or hydraulically powered, hermetically sealed angular or rotary actuator deflects mechanical members over a range of plus or minus 180 degrees. The actuator design provides incremental flexures which keep the local deflection rate within elastic limits.
Wuenscher, H. F.↗
Mechanical properties of polyimide resin/glass fiber laminates for various time, temperature, and pressure exposures
Effect of temperature, pressure, time on shear flexure strengths of polyimide-glass fiber laminates
Pride, R. A.↗
Mechanical properties of polymide-resin/glass fiber laminates for various time, temperature and presure exposures.
Mechanical properties in flexure and shear of resin/glass fiber laminates at various times, temperatures and pressure exposures, postulating degradation mechanism
Pride, R. A.↗
Natural frequencies of a flexible gravity- gradient satellite.
Oscillation behavior of gravity gradient librations and flexural modes of cruciform satellite with single degree of freedom
Farrell, J. L.↗
Solar pressure and thermal effects on the radio astronomy explorer.
Three dimensional coupled flexural and attitude dynamics of libration-damped cruciform gravity gradient satellite, discussing effects of orbital eccentricity, solar radiation pressure, etc
Farrell, J. L.↗
Fatigue failure in metal bellows due to flow-induced vibrations
To prevent fatigue due to flow-induced vibrations in metal bellows connected to ducts carrying liquid hydrogen, a study was made which shows that the flexure lines are in general a function of the vibration coupling between the fluid and bellows structure, and the nature of the external environment.
Daniels, C. M.↗