SEARCH · Search NASA
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.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Mechanical gage checks flare roundness and concentricity of metal tubing. The gage, which is available from off-the-shelf standard toolmaking supplies, provides the needed accuracy and is easily operated.
Self calibrating and self checking instrumentation for measurement of short term frequency stability of microwave sources
Instructional manual, check-off lists, and data sheets on anchored IMP mechanical systems
Theoretical model and application of error rate reduction of parity checked telemetry data by likelihood deletion strategy
Device automatically bench tests paper tape punches and readers in a simulated operating environment following routine maintenance. The reader and punch operate back-to-back and the paper tape output feeds the reader. The tape leader is prepunched with an arbitrary pattern that is continuously reproduced during the check.
Freon 22-air injection system for pressurizing tanks for Saturn systems leak check
Testing and evaluation of 2-inch duo-check valve for Saturn IB program
Performance test data for check valve used in ground support equipment
Low temperature, high temperature, and function tests of flow check valve for Apollo access arm
Inspection, proof pressure, and functional testing of check valve used in tank vent line of liquid hydrogen fuel system
Environmental and function testing of check valve
Acceptance testing of check valve used in piping for spacecraft support system
Valve leakage due to contaminant entrapment and chattering is effectively minimized by a metallic poppet-and-seat check valve designed for use in extreme environmental and fluid temperature conditions.
Force measurement in orbit to check scalar gravitation theory
Graph models for minimizing check point numbers in complex system error control
Antiflutter check valve for use with high pressure fluid flow
Positive locking check valve for stopping reversed flow