Observations of a Space Shuttle Burn by CINDI Instruments on C/NOFS

Details Observations of a Space Shuttle Burn by CINDI Instruments on C/NOFS Observations of a Space Shuttle Burn by CINDI Instruments on C/NOFS

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsa21a1438h&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SA21A-1438

Physics

Plasma Physics

[2403] Ionosphere / Active Experiments, [2415] Ionosphere / Equatorial Ionosphere, [2437] Ionosphere / Ionospheric Dynamics, [7803] Space Plasma Physics / Active Perturbation Experiments

Scientific paper

On July 30, 2009 the space shuttle Endeavour flew within 87 km of the Air Force research satellite C/NOFS that was then near its perigee at an altitude of ~422 km. Just prior to the encounter the shuttle conducted a 9.5-second burn of its OMS engines pointed upward so that the satellite would encounter the upward moving exhaust plume just over 29 seconds later. The CINDI instruments on board C/NOFS consist of an ion velocity meter (IVM) and a neutral wind meter (NWM). As C/NOFS passed through the plume both the IVM and the NWM detected a ~11-second long flow of ions and neutral particles in the direction corresponding to the plume’s motion. In addition the IVM also measured the temperature of the plume ions to be higher than the ambient plasma. Also, the retarding potential analyzer (RPA) on the IVM detected heavier ions than are normally present in this region of the ionosphere. All the results from this short encounter will be presented. A second attempt to measure a shuttle exhaust plume is planned for September 9, 2009 and if successful, those results will also be presented.

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