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13 July 2003

ISS On-Orbit Status 10 Jul 2003

Part 2 of 3

Total propellants transferred on 7/4 from 11P/Progress to the ISS
amounted to approximately 154 kg fuel (UDMH, unsymmetrical
dimethylhydrazine) and 187 kg oxidizer (NTO, nitrogen tetroxide).
Fuel/oxidizer quantities remaining in 11P are balanced, with about 27
liters of each remaining in the Progress tanks.

Another Robotics day with the SSRMS (space station remote manipulator
system) is being planned for 7/15 (Tuesday).  [Objective will be some
additional characterization of the SSRMS force moment sensor (FMS).
Data obtained through the FMS characterization so far have indicated
that the FMS data fluctuates based on heating/cooling of the exposed
EVA joint angle scale on the WR (wrist roll) joint, near the LEE/WR
(latching end effector/WR) interface.  Data will be gathered during
these operations to confirm this theory before work is begun to
develop a thermal protection kit to cover this area.]

Today's CEO targets, no longer limited in the current LVLH attitude
and including the targets of the Lewis & Clark 200-year memorial
locations, were Barcelona, Spain (looking for this rapidly growing
coastal city on the "Spanish Riviera" just right of track), Tunis,
Tunisia (this Tunisian capital and its harbor are on a large
north-facing bay.  Looking just right of track as ISS approached the
coast), Khartoum, Sudan (on this pass the crew had an excellent nadir
view of the Sudanese capital.  It is located where the White Nile and
Blue Nile Rivers join to form the Nile), Casablanca, Morocco (this
famous Moroccan port city lay just right of track), Industrialized
Southeastern Africa (as ISS tracked across extreme southwestern
Africa, the crew was to look right of track in oblique views evidence
of smog buildup over the industrialized Vaal and Orange River valleys
of South Africa), Fort Mandan, ND (LEWIS & CLARK SITE: This is where
the expedition spent the winter of 1804-5 and where Sacagawea and her
husband joined the group.  The site is near the present town of
Stanton.  Looking left of track and S of the large reservoir, Lake
Sacagawea.  Stanton is on the W bank of the Missouri near where it
turns sharply from S to E), Lower Amazon River Basin (ISS pass
offered excellent nadir views in fair weather of the complex and
dynamic islands of the Amazon estuaries.  Crew was asked to carefully
map the location of small islands and bars in the river for change
detection), The Dalles (LEWIS & CLARK SITE: A nice, oblique context
view of this target was acquired last week.  Today the crew was to
try for a nadir view of this southward arc in the Columbia just
before it plunges through the green Cascade Range), Salt Lake City,
Utah (the crew had a near-nadir pass for this target, looking for the
city located on the southeastern shore of Great Salt Lake), and
Nihoa (the crew had a nadir pass in fair weather over this small
target, using the long lenses to capture details of the coral reef
structures). CEO images can be viewed at the websites

http://eol.jsc.nasa.gov
http://earthobservatory.nasa.gov
See also the website "Space Station Challenge" at
http://voyager.cet.edu/iss/

Besides the daily CEO (crew earth observation) target list, the
station residents were also provided with times of ISS equatorial
night crossings for observing the current equatorial-tropical storm
zone. 

U.S. and Russian Segment Status (as of 1:15pm EST).

Environmental Control and Life Support (ECLSS) and Thermal Control
(TCS):

Elektron O2 generator is powered On (16 amp mode).  Vozdukh CO2
scrubber is On (in Manual Mode 5/3).  U.S. CDRA CO2 scrubber is Off.
TCCS (trace contaminant control subsystem) is operating.  MCA (major
constituents analyzer) is operating.  BMP Harmful Impurities unit:
absorbent bed #1 in Purify mode, bed #2 in Purify mode (unit is On).
RS air conditioner SKV-1 is On; SKV-2 is Off.

SM Working Compartment:  Pressure (mmHg) -- 742; temperature (deg C)
-- 27.8; ppO2 (mmHg) -- data invalid; ppCO2 (mmHg) -- data invalid.
SM Transfer Compartment:  Pressure (mmHg) -- 751; temperature (deg C)
-- 20.0.
FGB Cabin:  Pressure (mmHg) -- 748; temperature (deg C) -- n/a.
Node: Pressure (mmHg) -- 740.07; temperature (deg C) -- 23.1 (shell);
ppO2 (mmHg) -- n/a; ppCO2 (mmHg) -- n/a.
U.S. Lab:  Pressure (mmHg) -- 742.09; temperature (deg C) -- n/a;
ppO2 (mmHg) -- n/a; ppCO2 (mmHg) -- n/a.
Joint Airlock (Equip. Lock):  Pressure (mmHg) -- 742.19; temperature
(deg C) -- n/a; shell heater temp (deg C) -- 23.7, ppO2 (mmHg) --
168.6; ppCO2 (mmHg) -- 4.1.
PMA-1:  Shell heater temp (deg C) -- 23.2
PMA-2:  Shell heater temp (deg C) -- 20.9.

(n/a = data not available)

Propulsion System (PS):

Total propellant load available: 3803 kg (8384 lb) as of 6/26
[SM(774) + FGB(2447) + Progress M(182) +Progress M-1(400)].
(Capability: SM -- 860 kg; FGB -- 6120 kg).

Electrical Power Systems (EPS):

Both P6 channels fully operational.  BGA (beta gimbal assembly) 2B
and 4B both in directed position (Blind/triple-angle mode, non
solar-tracking, drag reduction)..
SM batteries:  Battery #4 is disconnected (failed 6/16); all other
batteries (7) are in "Partial Charge" mode.  Batteries #1, #2 and #3
showing degraded capacity.
FGB batteries:  Battery #3 is offline; battery #2 is in "Cycle" mode;
all other batteries (4) are in "Partial Charge" mode.
Plasma Contactor Unit PCU-1 in Standby mode; PCU-2 in Standby mode.

Command & Data Handling Systems:

C&C-1 MDM is prime, C&C-2 is back-up, and C&C-3 is in standby.
GNC-1 MDM is prime; GNC-2 is Backup.
INT-1 is operating; INT-2 is Off.
EXT-2 is On (primary), EXT-1 is Off (both now upgraded to R3).
LA-1, LA-2 and LA-3 MDMs are all operating.
PL-2 MDM is Off; PL-1 MDM is Operational.
APS-1 (automated payload switch #1) and APS-2 are both On.
SM Terminal Computer (TVM): 3 redundant lanes (of 3) operational.
SM Central Computer (TsVM): 3 redundant lanes (of 3) operational.

Attitude Control Systems:

3 CMGs on-line (CMG-1 failed).
State vector source -- U.S. SIGI-1 (GPS)
Attitude source -- U.S. SIGI-1 (GPS)
Angular rate source -- RGA-1

Flight Attitude:

LVLH -YVV (local vertical/local horizontal = "earth-fixed": z-axis in
local vertical, -y-axis in velocity vector [yaw: -10 deg, pitch: -9.3
deg, roll: 0 deg]), with CMG/TA (thruster assist) Momentum
Management.
Solar Beta angle:  33.7 deg (magnitude increasing).

 - Continued -

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