A Mars micromission launches as an Ariane 5 secondary as early as November 1, 2002. One possible mission is a comm/nav micromission orbiter. The other possible mission is a Mars airplane. Both missions are enabled by a low-cost, common micromission bus design.

Mars↗

NASA NTRS1999

Free Flying Magnetometers As a Demonstration of Micro-Spacecraft Technologies

Four Free Flying Magnetometers (FFMs) flew on the Enstrophy sounding rocket launched on February 10, 1999 from Poker Flats Research Range.

Free↗

NASA NTRS1999

First Generation Jet Propulsion Laboratory Hockey-Puck Free-Flying Magnetometers for Distributed In-Situ Multiprobe Measurement of Current Density Filamentation in the Northern Auroral Zone: Enstrophy Mission

The sub-orbital rocket mission was a collaborative project between the University of New Hampshire, Cornell University, and the Jet Propulsion Laboratory to study filamentation phenomenon in the northern Auroral zone.

microspacecraft↗

NASA NTRS1999

The Mars Micromission Spacecraft

UNKNOWN

Mars↗

NASA NTRS1997

Jet Propulsion Laboratory Free-Flying Magnetometers for Distributed In-Situ Multiprobe Measurement of Current Density Filamentation in the Northern Auroral Zone: Enstrophy Mission

Explore the source record for details and available documents.

Free-Flying Magnetometers Density Filamentation En↗

NASA NTRS1988

WF/PC internal molecular contamination during system thermal-vacuum test

During the recent system thermal vacuum test of the Wide-Field/Planetary Camera (WF/PC), instrumentation was added to the WF/PC to characterize the internal molecular contamination and verify the instrument throughput down to 1470 angstroms. Analysis of data elements revealed two contaminants affecting the far-ultraviolet (FUV) performance of the WF/PC. The one contaminant (heavy volatile) is correlated with the electronic and housing temperature, and the contamination is significantly reduced when the electronics are operated below plus 8 degrees to plus 10 degrees C. The other contaminant (light volatile) is controlled by the heat pipe temperature, and the contamination is significantly reduced when the Thermal Electric Cooler (TEC) hot-junction temperature is below minus 40 degrees to minus 50 degrees C. The utility of contamination sensors located behind instruments during system tests was demonstrated.

Taylor, Daniel M.↗

NASA NTRS1978

User experience with on-road electric vehicles in the U.S.A. and Canada

Approximately 3000 on-road electric passenger cars and delivery vans are now in use in the U.S.A. and Canada. The owners and operators of almost one-third of these vehicles have been surveyed directly in an attempt to determine the suitability of commercially sold electric vehicles for real on-road jobs. This paper is primarily concerned with the analysis of the engineering aspects of the user experience with electric vehicles, i.e., mileage and application, failure modes and rates, energy economy, maintenance requirements, life cycle costs, and vehicle performance characteristics. It is concluded that existing electric vehicles can perform satisfactorily in applications that have limited performance requirements, particularly in terms of range.

Sandberg, J. J.↗