Kinematic synthesis of plane curves.
Damped least squares method for kinematic synthesis of plane curves described by paired coordinates for four-bar linkage mechanism
COORDINATE SYSTEM↗
SEARCH · Engineering Papers
Results for “linkage”
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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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↗
Development of siloxane-containing epoxy polymers for electrical circuit embedment applications
Synthesis of epoxy polymers containing siloxane linkage
Patterson, W. J.↗
Digital-computer interface systems.
Digital computer interface systems design for simulation, control, instrumentation and data processing, discussing hybrid computer linkages
Korn, G. A.↗
Thermal-difference compensation for structural members
Aluminum-thermal difference link maintains constant length of strut despite environmental temperature changes. An extension spring decreases load on the compensator drive linkage when strut is in tension, when strut is in compression, a compression spring is used. Perforated titanium outer tube exposes link to external heat.
Belew, R. R.↗
Flexible pivot mount eliminates friction and hysteresis
Flexible steel pivot mount, suspended by flat vertical beryllium copper springs, is capable of rotation, free of hysteresis and starting friction. Mount requires no lubrication, is made in varying sizes, and is driven with either dc torque motor or mechanical linkage.
Highman, C. O.↗
Study of tooling concepts for manufacturing operations in space Final report
Mechanical linkage device for manufacturing operations with orbital workshops
Boyd, R. E.↗
Supernovae, neutron stars, and pulsars
Pulsars pulse duration and shape as key to neutron stars linkage with supernova explosions
Cameron, A. G. W.↗
2-azido-2 prime-nitrenobiphenyl
Intramolecular formation of azo-linkage accompanying N elimination from bis-azide
Boyer, J. H.↗
The role of phosphates in biochemical reactions
Structural and functional properties of phosphates in biochemical reactions, discussing linkages
Degens, E. T.↗
Initiation of DNA replication in Bacillus subtilis. II
Parental termini-daughter strand linkage in initiation of DNA replication in Bacillus subtilis after thymineless germination
Yoshikawa, H.↗
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.↗
Hydraulic actuator motion limiter ensures operator safety
Device regulates action of hydraulic linkage to control column to minimize hazard to operator. Primary components of device are flow rate control valve, limiter accumulator, and shutoff valve. Limiter may be incorporated into other hydraulic systems to prevent undue wear on hydraulic actuators and associated components.
Steinmetz, C. P.↗
Alleviation of divergence during rocket launch Patent
Design and characteristics of linkage to alleviate rocket vehicle divergence during launch
Gillespie, W., Jr.↗
Fire retardant polyisocyanurate foam
Fire retardant properties of low density polymer foam are increased. Foam has pendant nitrile groups which form thermally-stable heterocyclic structures at temperature below degradation temperature of urethane linkages.
Riccitiello, S. R.↗
A stable liquid crystal for electro-optical displays
Method is reported for substitution of hydroxy (OH) group ortho to anil linkage to stabilize anil-type liquid crystal for use in electro-optical devices.
Lakes, M. M.↗
Space shuttle staging simulation
The overall capability is described and delineated of a new digital computer program for simulation of space shuttle vehicle staging maneuvers. The important distinctive feature of the program is that it enables simulation of linkage-type separation devices (as well as all the more usual types) and includes the effects of interference aerodynamics and thrust impingement. A general flow description and a moderately detailed description of the major simulation components are presented. Some typical simulation results are shown, and the flexibility and growth potential of the basic simulation are discussed.
Hall, C. E.↗
Development of a flameproof elastic elastomeric fiber
Various flexible polyurethane structures containing halogen were synthesized from polyesters derived from aliphatic or aromatic polyols and dibasic acids. Aliphatic halide structures could not be used because they are unstable at the required reaction temperatures, giving of hydrogen halide which hydrolyzes the ester linkages. In contract, halogen-containing aromatic polyols were stable and satisfactory products were made. The most promising composition, a brominated neopentyl glycol capped with toluene disocyanate, was used as a conventional diisocyanate, in conjunction with hydroxy-terminated polyethers or polyesters to form elastomeric urethanes containing about 10% bromine with weight. Products made in this manner will not burn in air, have an oxygen index value of about 25, and have tensile strength values of about 5,000 psi at 450% elongation. The most efficient additives for imparting flame retardancy to Spandex urethanes are aromatic halides and the most effective of these are the bromide compounds. Various levels of flame retardancy have been achieved depending on the levels of additives used.
Howarth, J. T.↗