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3 Apr 2003

ISS On-Orbit Status 2 Apr 2003

Part 2 of 3

The conjunction with a Delta 2 rocket body (object #21150), predicted
for tonight after midnight, has moved to a calculated miss distance
of 31.1 km. No DAM (debris avoidance maneuver) by Progress is
required.  The planned SM and FGB solar array efficiency test planned
for tomorrow remains on schedule, as does the first of two Progress
reboosts, scheduled for Friday (4/4).

During last night and ending this morning at 7am EST, MCC-H and its
support group in Moscow (HSG) performed a BCC (backup control center)
dry-run in test mode, with no involvement of ISS crew or vehicle.
[BCC utilizes the HSG command server and telemetry server.  In test
mode, HSG (as BCC) sent a single not-for-uplink PPCP (preplanned
command packet) to MCC-M/TsUP, then cancelled it after successful
transmission.  MCC-M played back the ACT (American contingency
telemetry) recorded during the ACT checkout on 3/31/03, with HSG
confirming successful receipt.  TsUP commanding to the Russian
segment (RS) via U.S. S-band as well as MCC-H-to-TsUP flow of status
telemetry were also not affected, but MCC-H had no real-time
telemetry and command capability via Russian ground stations (RGS).]
Today's CEO (crew earth observations) targets, currently restricted
by flight rule constraints limiting the use of the science window in
the Lab, were Cape Town, South Africa (nadir pass over this major
port and industrial city of South Africa. Margins of the city, of
greatest interest in city-growth studies, extend 30 km east from the
city center [at the foot of the Table Mountain massif]),
Industrialized SE Africa (smog-smoke-dust loadings can accumulate for
many days under the semi-permanent high pressure systems that
dominate the subcontinent in summer and winter.  Looking left and
right for oblique images), Johannesburg, South Africa (looking right
for the center of the 150-mile-long metropolis centered on the gold
mining city of Johannesburg), Patagonian Glaciers (unusual situation
of cloud banking up on the desert [east] side of the southern Andes,
with clear skies on the west [Pacific] side.  Crew was to shoot
seldom seen west-side glacier tongues), Kuwait City, Kuwait (nadir
pass), Western Mediterranean Aerosol (smog buildup likely.  Looking
left toward source regions of France and northern Italy), Eastern
Mediterranean Aerosol (smog buildup likely.  Looking left up the
Adriatic Sea towards the mouth of the Po valley, a valley with the
worst air pollution in Europe.  Smog tongues may extend visibly into
the eastern Mediterranean), Lower Amazon River Basin (good pass for
documenting the position of islands in the complex mouth of the
Amazon.  Looking just left. This largest river on the planet moves
islands at unexpectedly fast rates), and Northern South America
fires (Dynamic event:  Numerous fires reported along the northern
edge of the Amazon rainforest in eastern Colombia and southern
Venezuela.  Looking left and right and shooting obliques to document
extent of smoke pall). CEO images can be viewed at the websites
http://eol.jsc.nasa.gov and http://earthobservatory.nasa.gov

U.S. and Russian Segment Status (as of 12:45pm EST).

Environmental Control and Life Support (ECLSS) and Thermal Control
(TCS): Elektron O2 generator is powered Off.  Vozdukh CO2 scrubber is
On (manual mode 5).  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.  RS air conditioner SKV-1 is
On; SKV-2 is Off. 

SM Working Compartment:  Pressure (mmHg) -- 745; temperature (deg C)
-- 27.6; ppO2 (mmHg) -- 183.1 (suspect); ppCO2 (mmHg) -- 2.4 (data
suspect). SM Transfer Compartment:  Pressure (mmHg) -- 751;
temperature (deg C) -- 20.2.

FGB Cabin:  Pressure (mmHg) -- 752; temperature (deg C) -- 22.0.
Node:  Pressure (mmHg) -- 739.44; temperature (deg C) -- 23.1
(shell); ppO2 (mmHg) -- n/a; ppCO2 (mmHg) -- n/a.

U.S. Lab:  Pressure (mmHg) -- 741.48; temperature (deg C) -- 22.2;
ppO2 (mmHg) -- n/a; ppCO2 (mmHg) -- n/a;

Joint Airlock (Equip. Lock):  Pressure (mmHg) -- 741.58; temperature
(deg C) -- 20.9; shell heater temp (deg C) -- 21.4, ppO2 (mmHg) --
166.6; ppCO2 (mmHg) -- 4.2.

PMA-1:  Shell heater temp (deg C) -- 25.8

PMA-2:  Shell heater temp (deg C) -- 14.7

(n/a = data not available)

 - Continued -

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