July 24, 2009

George H Diller Kennedy Space Center, Fla 321-867-2468 george h diller@nasa gov

STATUS REPORT: ELV-072409

EXPENDABLE LAUNCH VEHICLE STATUS REPORT

Mission: Space Tracking and Surveillance System - Demonstrators Program (STSS-Demo) Launch Vehicle: Delta II 7920-10 Launch Pad: Launch Pad 17 B, Cape Canaveral Air Force Station, Fla Launch Date: Sept 15, 2009 Launch Window: 8 - 9 p m EDT

At Pad B on Launch Complex 17, liquid oxygen leak checks of the first stage were completed successfully on July 20 For this test, the first stage was filled with liquid oxygen during a simulated countdown

At the pad on the following day, July 21, a simulated flight test was completed without issues This is an electrical and mechanical test of the Delta II that exercises all of the launch vehicle systems in the same manner as will occur during powered flight

Also this week, first stage main engine preparation work is under way, and the first stage RP-1 fuel is being tested in order to be qualified for flight

Mission: Solar Dynamics Observatory (SDO) Launch Vehicle: Atlas V-401 Launch Pad: Launch Complex 41, Cape Canaveral Air Force Station, Fla Launch Timeframe: Dec 4, 2009

Connections between the recently installed flight battery and the SDO spacecraft have been established Spacecraft electrical testing is under way The high gain antenna has been returned to its stowed vertical position for the present time

The SDO full observatory comprehensive performance test is currently scheduled to begin on Aug 10 This will fully test all of the spacecraft science instruments and will be their last major evaluation before launch

Previous status reports are available at:

http://www nasa gov/centers/kennedy/launchingrockets/status/index html

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