Engineering topics

Vargo, S.

Publications and source records attributed to Vargo, S..

10 records

NASA NTRS2001

An overview of MEMS-based micropropulsion development at JPL

Development of MEMS (Microelectromechanical Systems) micropropulsion at the Jet Propulsion Laboratory (JPL) is reviewed. This includes a vaporizing liquid micro-thruster for microspacecraft attitude control, a micro-ion emgine for microspacecraft primary propulsion or large spacecraft fine attitude control, as well as several valve studies, including a solenoid valve studied in collaboration with Moog Space Products Division, and a piezoelectric micro-valve.

MEMS micropropulsion↗

NASA NTRS2000

Characterization of Kova-Pyrex Anodically Bonded Samples: A New Packaging Approach for MEMS Devices

The ability to anodically bond Kovar to Pyrex 7740 significantly expands the packaging approaches available for MEMS devices. This technique greatly simplifies and reliably interconnects micropropulsion MEMS components (thrusters, valves) with the attached propellant system.

anodic bonding packaging Pyrex Kovar↗

NASA NTRS2000

Development of a micro-isolation valve: minimum energy requirements, repeatability of actuation, and preliminary studies of debris generation

Continued experiments performed with a micro-isolation valve are being reported upon.

micropropulsion↗

NASA NTRS2000

MEMS technology at NASA's Jet Propulsion Laboratory

The MEMS Technology Group is part of the Microdevices Laboratory (MDL) at the Jet Propulsion Laboratory (JPL). The group pursues the development of a wide range of advanced MEMS technologies that are primarily applicable to NASA's robotic as well as manned exploration missions.

MEMS↗

NASA NTRS1999

Development of a Micro-Isolation Valve

A feasibility investigation for a newly proposed microfabricated, normally-closed isolation valve was initiated.

Microvalves microspacecraft micropropulsion micro-↗

NASA NTRS1999

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↗

NASA NTRS1999

MEMS Micropropulsion Activities at JPL

A status of MEMS-based micropropulsion activities conducted at JPL will be given.

vaporizing↗

NASA NTRS1999

Towards Micropropulsion Systems on-a-Chip: Initial Results of Component Feasibility Studies

Recent advances in the development of several micropropulsion components performed at JPL for microscpacecraft applications are reported upon.

micropropulsion microvalve system-on-a-chip micros↗

NASA NTRS1999

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↗

NASA NTRS1998

The Micro-Isolation Valve: Introduction of Concept and Preliminary Results

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.

Micro-Isolation↗