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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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Two deflected cantilever springs strung with wire provide force displacement compensation to maintain tension in the wires as they undergo thermal expansion. This method of maintaining tension in thermally expanded wires is used in electric space heaters and residential heat exchangers.
Spring constants for ellipsoid bulkheads used in longitudinal vibration analysis of liquid propellant launch vehicles
High pressure bellows has high strength rigid hoops for strength and stability and sheet stock for low spring rate effects. The simplicity of this bellows design facilitates mass production.
Diaphragm spring clutch mechanism is used in testing the relative merits of eddy-current and hysteresis dampers. The dampers are alternately coupled to a single damping boom shaft. The floating clutch mechanism enables the inoperative damper to remain completely isolated from the damping boom shaft during test of the other damper.
Antiflutter baffle plate and star spring combination for preventing squeal and impact damage in ball check valve used for high speed flow conditions
Origins of prebiological systems and their molecular matrices - Conference, Wakulla Springs, Florida, October 1963
Peripheral support guides that elastically flex with the slight breathing on radial displacement during actuation can greatly reduce the hysteresis present in a Belleville spring package. This technique provides a control device that enhances the precision of pressure regulating valves, pressure switches, and vacuum actuators.
Cold working and aging prepares nickel alloys for coiling into springs with properties acceptable in a cryogenic environment.
Automatically controlled low frequency air spring suspension system for vibration testing
Motion and stability of spinning spring-mass system in orbital plane with equation linearization
Special tool removes quick-locking fasteners incorporating waffle-spring retaining washers without damage.
Belleville spring assembly with elastic guides having low hysteresis
Longitudinal mass spring modeling of launch vehicles
Equations of motion of elastic dumbbell satellite and two-mass spring-connected satellite in orbit, using energy and Floquet theory to investigate spinning motion stability
System that employs opposed pairs of compression springs can be totally compressed to provide a ''hard mount'' during component installation and adjustment, and can be released to a free-floating condition for vibration isolation during test.
Inconel compression springs for long term space power system operation in high temperature vacuum
Multiple Belleville spring assembly with even load distribution