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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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Excel files containing the data points in the figures or the data to obtain those points. Included are data for Fig1 (nuclear intensity fit) and Fig 5b (magnetic intensity fit). Included are 2D maps and 1D cuts from the 3D data obtained on WAND² for 5K and 10K.
In this chapter, we provide notes on the state of metadata collection and organization practices and reflect on the achievements of the MetaCO task group. We also include an utility perspective on how to use this report in daily data management practice and a short guide is provided to show how metadata practices can be initiated. The chapter, and the report, is concluded within an outlook, sketching future progress and opportunities on the horizon.
Multimaterial and Isotopically Labeled Specimen Fabrication via Material Extrusion Additive Manufacturing for Interlayer Diffusion Analysis
Effects of time lag due to long transmission distances upon remote control
An experimental program is undertaken to define the effects upon remote control of long transmission delays. Investigation centers around remote control of a ground vehicle, which is considered to be a representative remote control task. A series of pursuit tracking tests is performed with transport lags ranging from 0 to 6 seconds between the control and the controlled quantity. Various target speeds are tracked with both velocity and acceleration controls. Two types of tracking are performed in an attempt to bracket the actual vehicle situation. In the first the operator attempts to follow the target with his controlled quantity in real time, using the delayed position and rates as feedback. In the second he attempts to follow the target with the delayed controlled quantity. In addition, tests are performed substituting simple electronic models for the human in an attempt to gain an understanding of human response with time delays in the control loop. A series of tests with an actual vehicle are performed with the intent of relating the tracking tests to the actual situation of interest. Time delays of from 0 to 3 seconds are included in the control loop. Performance is scored at various speeds over both continuous and obstacle courses. Both two and four-wheel steering are investigated. In the experiments the effects of all variables except delay magnitude and target complexity are minimized. Curves are obtained showing performance as a function of time delay and target complexity. These curves are discussed. Correlation of the tracking and vehicle experiments is discussed. Comments are made concerning the design of a minimum control system for a remotely controlled lunar roving vehicle.
Hub-tip radius ratio transonic turbine for secondary flow - stator configurations designed to eliminate blade wakes and secondary-flow effects
Reliability of sergeant missile assemblies - application of test-to-failure program
Design criteria for zero-leakage connectors for launch vehicles - plastic flow & flange rolling
Magnetic disturbances at high altitude
Photographic analysis of radial structures surrounding lunar mare basins
Biological exploration of Mars
Radial structure surrounding basins of lunar maria Orientale and Imbrium, primarily lineaments as expressions of tectonic adjustment
Environmental control and life support system for landing and reconnaissance mission Mars
Interconnection problem in microelectronics - systems design, reliability, and trends in microcircuitry
Supersonic transport crew roles, and workload implications on flight deck design
Inverse relationship between retinal blood vessel caliber and oxygen level, creatinine level variations, and buildup in microorganisms during confinement of aviators in pure oxygen
Medical studies and physiological tests of Gemini 7 astronauts