Expendable Launch Vehicle Status Report

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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 
 

	
-end-



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