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KSC-08pd1652
From the collection of NASA Image and Video Library. Free to download, adapt and use — no permission needed.
About this work
CAPE CANAVERAL, Fla. – In Orbiter Processing Facility bay No. 2, technicians begin installation of an auxiliary power unit 3, or APU3, in space shuttle Endeavour for the STS-126 mission. The auxiliary power unit is a hydrazine-fueled, turbine-driven power unit that generates mechanical shaft power to drive a hydraulic pump that produces pressure for the orbiter's hydraulic system.
NASA Image and Video Library’s own descriptionCredit lineKSC-08pd1652. NASA/KSC, 2008-06-10. Public domain. ID: KSC-08pd1652.