Physics
Scientific paper
Apr 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jgr....90.3487p&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 90, April 1, 1985, p. 3487-3497. Previously announced in STAR as N84-2520
Physics
37
Chemical Clouds, Plasma Diagnostics, Rocket Exhaust, Space Shuttle Payloads, Earth Ionosphere, Electron Density (Concentration), Plasma Density, Pressure Effects, Pulse Duration, Water Vapor
Scientific paper
The Plasma Diagnostics Package, flown aboard STS-3 as part of the first Shuttle payload (OSS-1), recorded the effects of various chemical releases from the Orbiter. Changes in the plasma environment was observed during flash evaporator system releases, water dumps and maneuvering thruster operations. During flash evaporator operations, broadband Orbiter-generated electrostatic noise was enhanced and plasma density irregularities were observed to increase by 3 to 30 times with a spectrum which rose steeply and peaked below 6 Hz. In the case of water dumps, background electrostatic noise was enhanced at frequencies below about 3 kHz and suppressed at frequencies above 2 kHz. Thruster activity also stimulated electrostatic noise with a spectrum which peaked at approximately 0.5 kHz. In addition, ions with energies up to 1 keV were seen during some thruster events.
Goertz Christoph K.
Kurth Willaim S.
Murphy G. B.
Pickett Jolene S.
Shawhan Stanley D.
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