Error Analysis on Spacebased Retrieval of Ocean Surface Evaporation
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Ocean Surface Air-Sea Interaction Microwave remote↗
Engineering topics
Tang, W.
Publications and source records attributed to Tang, W..
Melting Efficiency During Plasma Arc Welding
A series of partial penetration Variable Polarity Plasma Arc welds were made at equal power but various combinations of current and voltage on 2219 aluminum. Arc Efficiency was measured calorimetrically and ranged between 48% and 66%. Melting efficiency depends on the weld pool shape. Increased current increases the melting efficiency as it increases the depth to width ratio of the weld pool. Higher currents are thought to raise arc pressure and depress the liquid at the bottom of the weld pool causing a more nearly two dimensional heat flow condition.
McClure, J.C.↗
Wind Changes Over the Western Pacific
The history of China has been swayed by winds over the Western Pacific.
wind air-sea interaction remote sensing↗
Correlation-Based Interpolation of NSCAT Wind Data
Daily NASA Scatterometer (NSCAT) wind estimates cover about 75% of the globe.
NSCAT remote sensing air-sea interaction wind↗
MEMS Micro Valve for Space Applications
We report on the development of silicon micro valves for micro-propulsion and other space applications here at JPL.
valves↗
Miniature Biomimetic Acoustic Sensors
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Acoustic biomimetic sensors↗
Spaceborne Scatterometers and Microwave Radiometers in the Studies of Ocean-Atmosphere Interaction
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Air-Sea Interaction Evaporation↗
Development of a Micro-Isolation Valve
A feasibility investigation for a newly proposed microfabricated, normally-closed isolation valve was initiated.
Microvalves microspacecraft micropropulsion micro-↗
MEMS Micro Valve for Space Applications
We report on the development of a Micro-Electro-Mechanical Systems (MEMS) valve that is designed to meet the rigorous performance requirements for a variety of space applications, such as micropropulsion, in-situ chemical analysis of the planet, or micro-fluidics experiments in micro-gravity.
MEMS↗
The MEMS Knudsen Compressor as a Vacuum Pump for Space Exploration Applications
This paper discusses the initial fabrication of a single-stage MEMS Knudsen Compressor vacuum pump, provides performance criteria such as pumping speed, size, energy use and ultimate pressure and details vacuum pump applications in several MDL related in-situ instruments.
MEMS↗
MEMS Micropropulsion Activities at JPL
A status of MEMS-based micropropulsion activities conducted at JPL will be given.
vaporizing↗
Sensitivity of Spacebased Microwave Radiometer Observations to Ocean Surface Evaporation
The methodology of spacebased estimation of evaporation and latent heat flux from the ocean is described.
ocean↗
Monitoring Marine Weather Systems Using Quikscat and TRMM Data
We do not understand nor are able to predict marine storms, particularly tropical cyclones, sufficiently well because ground-based measurements are sparse and operational numerical weather prediction models do not have sufficient spatial resolution nor accurate parameterization of the physics.
Hurricane remote-sensing wind rain↗
Feasibility Study of MEMS-Based Accelerator Grid Systems for Micro-Ion Engines: Electric Breakdown Characteristics
Low-temperature (LTO) chemical vapor deposited (CVD) silicon dioxide was investigated for use as an insulator material in microfabricated ion engine accelerator grids.
micropropulsion↗
The Micro-Isolation Valve Concept: Initial Results of a Feasibility Study
A feasibility investigation for a newly proposed microfabricated, normally-closed isolation valve was initiated.
Micro↗
Deep Reactive-Ion Etched Micro Valves for Spacecraft Propulsion
We report on the design, and test setup of a silicon diaphragm micro valve.
MEMS valve deep Reactive-Ion Etching Propulsion↗