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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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At least 505 records · Page 28

Hydraulic characteristics of flow through miniature slits

Hydraulic characteristics of micro-orifices arrayed in close proximity across the face of a liquid fuel injector are studied. Effects of geometry and flow variables on discharge coefficients and flow regimes are determined, as well as visible characteristics of the emerging liquid streams.

Powell, W. B.↗

Small hydraulic turbine drives

Turbine, driven by the fluid being pumped, requires no external controls, is completely integrated into the flow system, and has bearings which utilize the main fluid for lubrication and cooling. Torque capabilities compare favorably with those developed by positive displacement hydraulic motors.

Rostafinski, W. A.↗

Small hydraulic turbine drives

Small three stage hydraulic turbine for aerospace and commercial applications, discussing design and performance

Rostafinski, W. A.↗

Spacecraft hydraulic timers

Spacecraft hydraulic timers design and qualifications testing, discussing oil selection and temperature dependence

Trimble, H. D.↗

High-temperature, long-life polyimide seals for hydraulic actuator rods

Two types of polyimide seals are developed for hydraulic actuator rod in low pressure second stage of two-stage configuration. Each seal melts test objectives of twenty million cycles of operation at 534 K. Analytical and experimental study results are discussed. Potential applications are given.

Johnson, R. L.↗