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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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Low leakage rate, large diameter vent and relief valve operates satisfactorily over a large temperature range by a design that accommodates waviness and distortions due to thermal gradients. It is based on a fixed sealing member having an inclined lapped surface to which a flexible flow gate conforms.
Gas leakage rates are quantitatively estimated using threaded and flanged fittings by standardizing bubble appearance. Three classes of bubble formations have been proposed.
Leakage of microorganisms from pressurized Gemini space suit into ambient temperature microbiotank
Approximate methods for side leakage effect in high speed gas lubricated bearing
Leakage through propellant valves into injector flow passages and combustion chambers in vacuum
Leakage of large diameter O ring seals on spacecraft air lock hatches
Joining techniques for zero leakage ducts and tube connections
Fundamental leakage and structural studies of fluid connectors and seals
Adverse effects of liquid propellant leakage past control valves in vacuum environment
Prototype propellant leakage detection system for space flight propulsion systems
Steady state leakage rate by diffusion through laminated composite bladder structure with cylindrical hole
Leakage flow calculation method for seal interface between metallic surfaces, noting application to fluid connector design
Mathematical model of interface sealing phenomenon in determining design criteria for zero leakage connectors for launch vehicles
Simulated hydrogen leakage in electrolytic hydrogen-oxygen fuel cells
Source and cause of fuel element fisson product leakage in reactor cooling water system at Plum Brook Reactor
Torque and leakage rates of various lubricated lip seal designs at peripheral velocity of 120 feet per second
Leakage testing handbook giving fundamentals, theory, methods, detector equipment, and test media