Engineering topics
Publications and source records attributed to Tang, W..
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.
A status of MEMS-based micropropulsion activities conducted at JPL will be given.
The methodology of spacebased estimation of evaporation and latent heat flux from the ocean is described.
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.
Low-temperature (LTO) chemical vapor deposited (CVD) silicon dioxide was investigated for use as an insulator material in microfabricated ion engine accelerator grids.
A feasibility investigation for a newly proposed microfabricated, normally-closed isolation valve was initiated.
We report on the design, and test setup of a silicon diaphragm micro valve.
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Explore the source record for details and available documents.
Strong recent interest with the aerospace community to build smaller spacecraft necessitates the development of space hardware able to fit the unique requirements with respect to mass, size, and power.
Low-temperature (LTO) chemical vapor deposited (CVD) silicon dioxide was investigated for use as an insulator matierial in microfabriacted ion engine accelerator grids.
Proof-of-concept testing of a microfabricated vaporizing liquid thruster was performed.
The anomalous warming along the equator is part of the developing El Nino condition and is related to the westerly wind anomalies and the relaxation of the trade-winds over the equatorial Pacific.
The major differences between monthly-mean ocean-surface wind fields derived from the observations of the National Aeronautics and Space Administration (NASA) Scatterometer (NSCAT) and produced by the operational numerical weather prediction (NWP) model of the European Center for Medium-Range Weather Forecasts are found in coastal and equatorial regions, where the sharp changes are smoothed over in NWP products.
Monsoons are the seasonal changes of winds forced by continent-ocean temperature contrast. Their annual onset, intensity, and retreat vary greatly, and the variation has strong economic impact and may cause severe human suffering.
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The availability of coincident observations from four.
Daily variations of wind and solar forcing derived from satellite data were compared with sea surface temperature and temperature tendency during the Tropical Ocean Global Atmosphere - Coupled Ocean Atmosphere Response Experiment.