yee@trident.arc.nasa.gov (Peter E. Yee) (02/06/91)
Payload Status Report
Kennedy Space Center
February 5, 1991
GAMMA RAY OBSERVATORY/STS-37 (April, 1991)
Final electrical testing of the Gamma Ray Observatory was
completed on Jan. 23.
Engineers are assessing the significance of an increase in
resistance measured in a diode of one of the remote interface
units (RIU) which recently underwent repair and retesting at the
vendor. These are the electrical interface between the
observatory subsystems and experiments, and the spacecraft's
modular power system and command and data handling system.
The flight batteries were reconditioned on Jan. 29 and a
trickle charge established. On Jan. 30 the Observatory was
rotated to the vertical configuration and placed on its
associated transporter. Interim closeouts of the thermal
blankets were then completed. Yesterday the transportation cover
was placed around the spacecraft in preparation for the one-mile
trip to the Vertical Processing Facility which is scheduled to
begin at 4 a.m. on Thursday, Feb. 7.
TETHERED SATELLITE/STS-46 (March, 1992)
In the Operations and Checkout Building, the satellite was
hoisted into its deployer for the first time on Jan. 18 to begin
a series of fit checks. Since that time it has been periodically
removed and reinstalled to make adjustments, which were completed
on Feb. 1. The satellite is presently located in an off-line
laboratory for further testing.
The reel assembly, currently holding a non-flight tether,
was hoisted onto the flight pallet and installed Feb. 2. The
deployer will be mated to the pallet in late April.