Randy John wrote: > >No duration is included. Would you (or anyone else) like to comment on the >difference between these three events? > Hi Randy and list, For complete information about the supply/waste water storage system on the orbiter see : http://spaceflight.nasa.gov/shuttle/reference/shutref/orbiter/eclss/water.html http://spaceflight.nasa.gov/shuttle/reference/shutref/orbiter/eclss/wastewater.html The following explanations are based on my limited knowledge of the orbiter systems and are not necessarily exact. The real dump takes place when it is listed as SUPPLY/WASTE WATER DUMP and you can see the commands Initiate and Terminate. The difference in time between the two represents the duration. Now about the SUPPLY WATERDUMP USING FES. This acronym means Flash Evaporator System. The FES is used to dissipate heat generated by the crew and electronic equipment inside the orbiter by boiling water that comes from the Fuel cells. The FES is used in backup of the large radiator panels installed inside the payload bay doors and during the ascent phase and during deorbit and reentry. The Freon-21 coolant loops carry the heat to the FES that boils water to dissipate it. So my guess is that this Supply Water Dump is something happening inside the orbiter systems, so it's not a visible event for us. The attitude of the orbiter does not need to be changed for this kind of dump. Cheers, Dan -- Daniel Deak representant, projet spatial Starshine Drummondville, Quebec COSPAR site 1746 : 45.8537°N, 72.4857°W, 90 m., UTC-4:00 Site en francais sur les satellites: French-language satellite web site : http://www.obsat.com ----------------------------------------------------------------- Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org http://www2.satellite.eu.org/seesat/seesatindex.html
This archive was generated by hypermail 2b29 : Sat Aug 18 2001 - 19:48:12 PDT