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Record Details

Record 43 of 995
Miniature Free-Flying Magnetometer Utilizing System-On-A-Chip Technology
Author and Affiliation:
Eyre, F. B.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA United States)
Blaes, B. R.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA United States)
Abstract: Four Free-Flying Magnetometers (FFMs), developed at the Jet Propulsion Laboratory (JPL) for the Enstrophy mission, were successfully deployed from the payload of a sounding rocket launched from Poker Flats, Alaska on February 11, 1999. The FFMs functioned successfully by synchronously measuring the vector magnetic field at 4 points separate from the payload and at relative distances up to 3 km, and communicated their data, in bursts, to the ground. This is the first time synchronized in-situ multipoint measurements of the Earth's magnetic field utilizing miniature spin-stabilized "sensorcraft" have been performed. The data they provided have enabled, for the first time, the direct measure of field-aligned current density and are enabling new science by determining the fine-scale structure of the currents in the Earth's ionosphere involved in the production of aurora. These proof-of-concept "hockey puck" (80 mm diameter, 38 mm height, 250 gram mass) FFMs were built using off-the-shelf commercial, industrial, and military grade surface-mount electronic components. Radiation-hard electronics was not required for the Enstrophy mission's short sub-orbital flight. The successful design, implementation, and flight demonstration of this 1st generation FFM design has provided a solid base for further development of a 2nd generation FFM design for planetary science applications. A reliable ultra-miniature radiation-hard 2nd-generation FFM utilizing System-On-A-Chip (SOAC) technologies is proposed. This design would be targeted for long-term planetary missions to investigate magnetospheric field configurations in regions having small-scale structure and to separate spatial and temporal variations. A fleet of short-lived (expendable) FFMs would be deployed into a targeted region to gather multiprobe vector magnetic field data. The FFMs would be ejected from a parent spacecraft at a speed of a few m/sec and would cover spatial volumes of order tens of kilometers for times of order one hour. The parent spacecraft would carry a sufficient number of FFMs for multiple deployments. Additional information is contained in the original extended abstract.
Publication Date: Jan 01, 2001
Document ID:
20010041210
(Acquired May 18, 2001)
Subject Category: LUNAR AND PLANETARY SCIENCE AND EXPLORATION
Document Type: Conference Paper
Publication Information: Forum on Innovative Approaches to Outer Planetary Exploration 2001-2020; 8; (LPI-Contrib-1084); (SEE 20010041202)
Financial Sponsor: Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA United States
Organization Source: Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA United States
Description: In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: MAGNETOMETERS; FREE FLIGHT TEST APPARATUS; IONOSPHERIC CURRENTS; GEOMAGNETISM; MINIATURIZATION; CURRENT DENSITY; CHIPS (ELECTRONICS)
Availability Notes: Abstract Only; Available from STI Support Services only as part of the entire parent document
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