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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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We demonstrate a spot-checking approach for real-time drift estimation and mitigation in continuously operating quantum links. Using polarization-entangled photon pairs, we achieve stable 16-hour operation, validating efficient, minimally invasive monitoring of quantum-network performance.
We present a spot-checking method to monitor and mitigate errors in imperfect entangled photon sources from semi-trusted third parties. We demonstrate that our method effectively mitigates polarization drifts and yields high-fidelity polarization-entangled Bell-state generation.
Lunar Spectral Deconvolution Algorithm (SDA) Retrieval Version 4.1 Level 2.0 (Quality checked and filtered )
Cross check study of vacuum compatibility of polystyrene and polymethylmethacrylate - weight loss determination
Check valve with a cylindrical flanged tube body is used in standard AN fittings. The valve also has an easily removable spring-loaded piston.
Computer switching network consists of parallel and series combinations of mod 2 adders using the minimum number of gating levels. This network minimizes the propagation time in which a sequence of pseudonoise check bits are generated.
Saturn IB launch vehicle configuration and test objectives and measuring program with technical check list covering Saturn S- IB stage and Saturn S- IVB stage
Two check valves prevent reverse flow through pilot-operated relief valves of differential area piston design. Title valves control pressure flow to ensure that the piston dome pressure is always at least as great as the main relief valve discharge pressure.
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