Space Shuttle NASA Mission Reports: 1989 Missions, STS-29, STS-30, STS-28, STS-34, STS-33 by Aeronautics and Space Administration (NASA) National & Spaceflight News World

Author:Aeronautics and Space Administration (NASA), National & Spaceflight News, World
Language: eng
Format: mobi
Publisher: Progressive Management
Published: 2012-01-04T05:00:00+00:00

The fuel cell 1 flowmeter failed at 221:01:30 G.m.t., but did not impact fuel cell operations (Flight Problem STS-28-05c). The output of the flowmeter initially drifted high with some upper-limit excursions before failing off-scale high.

AUXILIARY POWER UNIT SUBSYSTEM

The auxiliary power unit (APU) subsystem performed in an excellent manner during ascent, flight control system checkout, and entry and landing operations. APU 1 operated for 1 hour 42 minutes and APU 2 and APU 3 each operated for 1 hour 16 minutes 48 seconds, of which 14 minutes 15 seconds were after landing. A total of 548 lb of fuel was used during the 4 hours 15 minutes 36 seconds of APU operation.

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