Aug 15, 2008

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

STATUS REPORT: ELV-081508

EXPENDABLE LAUNCH VEHICLE STATUS REPORT

Mission: IBEX (Interstellar Boundary Explorer) Launch Vehicle: Pegasus XL (Orbital Sciences) Launch Facility: Reagan Test Site, Kwajalein Pacific Atoll Launch Date: Oct 5, 2008 Launch Window: 12:42 p m - 12:45 p m EDT (04:42 a m - 04:45 a m local Kwajalein time)

At Vandenberg Air Force Base, Calif , the IBEX spacecraft was fueled with hydrazine control propellant on Aug 12 This was followed by spacecraft spin balancing on Aug 14 Friday, IBEX is scheduled to be attached to the upper stage booster Technicians will then perform a final spin-balance test of the entire flight stack on Aug 16 After de-integration, the upper stage will be transported to the Pegasus launch vehicle hangar on Aug 19 The IBEX spacecraft will be moved there on Aug 20

At the Orbital Sciences launch vehicle hangar, prelaunch processing of the Pegasus XL rocket continues to occur on schedule Mating of the first and second stages was completed yesterday Attachment of the second and third stages was done on Aug 12

The L-1011 aircraft carrying the Pegasus XL rocket with IBEX currently is planned to depart from Vandenberg on Sept 25 After a stop in Hawaii, the flight will continue and arrive at the Reagan Test Site at Kwajalein Atoll in the south Pacific on Sept 26

For information about IBEX and its mission, visit:

http://www nasa gov/ibex

Previous status reports are available at:

http://www nasa gov/centers/kennedy/launchingrockets/status/2008

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