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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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Copper alloy is converted into a spring material that can be rolled into a compact coil which will spontaneously open to form a tube in the long direction of the strip. The copper alloy is passed through a furnace at a prescribed temperature while restraining the strip in the desired tubular configuration.
Aluminum carrying case protects charts during transit and opens to form a rigid easel for their presentation. Looseleaf clamps hold the charts in place for both carrying and displaying them.
Epoxy coating reduces punctures, abrasions, and contamination of synthetic cellular containers used for shipping and storing fragile goods and equipment. A wire band is wound around the closure joint, followed by the epoxy coating. The container can then be easily opened by pulling the wire through the epoxy around the joint.
Segmented ball valve and flowmeter in the same spherical housing provide a valve that will handle large fluid volume without bulkiness and weight of blade valves or conventional ball valves. The valve is easily opened or closed and the flowmeter remains stationary, so errors are eliminated.
Plug assembly seals openings in piping systems, vessels, and chambers for low pressure leak testing. The assembly, which consists of a rubber sealing plug and the mechanism for expanding it into a pressure-tight configuration, adequately seals irregular diameters without damage to mating surfaces.
Thin film resistance-capacitance lines with resembling open circuit voltage transfer characteristics
Open cycle life support system for manned interplanetary space flight
Determination of diaphragm opening-times and use of diaphragm particle traps in hypersonic shock tube
Theory for open-ended circular cylindrical microwave cavities developed by using Laplace transform and Wiener-Hope techniques
Stability of Saturn S-IC stage open loop propellant hydraulic system
Study of stability of S-IC open loop propellant hydraulic system
Saturn S-IC open-loop propellant-hydraulic system study
Liquid hydrogen density measurements using open ended microwave cavity
Calculating method for parachute opening forces, system velocity, cloth pressure loading and filling time for horizontal and vertical deployment conditions
Rapid opening mechanical gate valve consisting of blade assembly, blade catcher and primer holder used in conjunction with hypervelocity free flight range experiments
Open-ended microwave cavity directly measures the density of flowing liquid, gaseous, or two-phase hydrogen. Its operation is based on derived relations between the cavity resonant frequency and the dielectric constant and density of hydrogen.
The general frequency response program provides the frequency response of any linear feedback control system including the open loop control system. The system characteristic matrix, obtained from the Laplace transformations of the dynamic and control equations, is input to the program. A variety of outputs are available.
Thermodynamic and turbine characteristics of gas turbine-driven hydrogen fueled open cycle auxiliary space power systems