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13 July 2003

ISS On-Orbit Status 11 Jul 2003

Part 2 of 3

The crew was asked to keep an eye out for tropical storm (hurricane)
Claudette and to record photos or video clips, if possible, for
forwarding to PAO.  [MCC-H is watching Claudette as "she" is moving
in from the Caribbean towards the Gulf of Mexico, possibly gaining
hurricane strength and perhaps later requiring shifting ISS Flight
Control from Houston to Moscow.  A decision regarding such control
transfer, if required, will in all likelihood not have to be made
before Monday morning (7/14).] 

In both LVLH and XPOP attitudes, the crew has some good opportunities
to view the full Moon over the weekend.  A list with viewing times
and angles from the Soyuz DM porthole and DC-1 forward window was
uplinked. 

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 Rome, Italy (nadir pass), Lisbon, Portugal (nadir
pass), Recife, Brazil (nadir pass), Pomeroy, Washington (LEWIS &
CLARK SITE: Nadir pass--looking on the south side of the Snake River
[within the second bend of the river upstream of its confluence with
the Columbia River]), Lemhi Pass, Mont/Idaho (LEWIS & CLARK SITE:
Nadir pass--shooting mountain range crests [dark forest green, as
opposed to lighter, browner river valleys] and the crew should have
captured this remote pass over the continental divide), Tropical
Storm Claudette (Dynamic event.  Claudette was right of track),
Buenos Aires, Argentina (nadir pass), Jarvis Island, Central Pacific
(Nadir pass. Detail of this equatorial atoll's coral reefs was
requested, to complete a global mapping study of these highly
productive points in the world ocean), Cairo, Egypt (NIGHT PASS.
Nadir view), Tel Aviv, Israel (NIGHT PASS. Nadir view), Amman,
Jordan (NIGHT PASS. Nadir view), and Damascus, Syria (NIGHT PASS.
Nadir view). 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 1:50pm 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)
-- 28.1; ppO2 (mmHg) -- data invalid; ppCO2 (mmHg) -- data invalid.
SM Transfer Compartment:  Pressure (mmHg) -- 751; temperature (deg C)
-- 20.0.
FGB Cabin:  Pressure (mmHg) -- 752; temperature (deg C) -- n/a.
Node: Pressure (mmHg) -- 740.07; temperature (deg C) -- 22.2 (shell);
ppO2 (mmHg) -- n/a; ppCO2 (mmHg) -- n/a.
U.S. Lab:  Pressure (mmHg) -- 742.29; temperature (deg C) -- n/a;
ppO2 (mmHg) -- n/a; ppCO2 (mmHg) -- n/a.
Joint Airlock (Equip. Lock):  Pressure (mmHg) -- 742.39; temperature
(deg C) -- n/a; shell heater temp (deg C) -- 23.9, ppO2 (mmHg) --
168.3; ppCO2 (mmHg) -- 4.3.
PMA-1:  Shell heater temp (deg C) -- 23.9
PMA-2:  Shell heater temp (deg C) -- 21.3.


(n/a = data not available)

Propulsion System (PS):

Total propellant load available: 3733 kg (8230 lb) as of 7/10
[SM(774) + FGB(2777) + Progress M(182) +Progress M-1(0)].
(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:  38.5 deg (magnitude increasing).

 - Continued -

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