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3\04 ISS On-Orbit Status 04-03-2003
Part 2 of 2

According to MCA (major constituents analyzer) readings, carbon 
dioxide partial pressure (ppCO2) in the Lab was 3.7 mmHg this morning. 
Based on the CDMK (CO2 monitoring kit), CO2 levels in Lab and SM 
differ now by only 0.2 mmHg. Vozdukh is on, in manual mode. With CDRA 
(CO2 removal assembly) turned off since last Friday, this means that 
Vozdukh is doing very well.

Today's targets for the CEO (crew earth observations program) were 
Fires in Southeast Asia (DYNAMIC EVENT TARGET: The burning season in 
Southeast Asia continues unabated and smoldering fires are generating 
dangerous levels of aerosols, especially carbon monoxide. On this 
pass, the crew was to look left of track to document the areal extent 
of smoke and locate point sources), Mekong River Delta (although ISS 
had a nadir pass over the main channels of this delta system, the crew 
was to look right of track to the SW for land use and drainage 
patterns in the older, less active areas to the SW. Sun glint 
enhancement of water bodies was possible), Tropical Cyclone Japhet 
(DYNAMIC EVENT TARGET: Tropical Cyclone Japhet made landfall yesterday 
on the central coast of Mozambique as a major storm. By the time of 
this pass the remains of the storm should have been well inland. Crew 
was to look for evidence of the storm's passage such as flooding, 
altered vegetation patterns. and sediment plumes in the sea), West 
African Fires (DYNAMIC EVENT TARGET: As the dry season begins in 
western Africa, numerous fires are being detected in satellite 
imagery. Crew was asked to look obliquely either side of track to 
detect the smoke plumes and the their distribution), Western 
Mediterranean Dust (as a powerful winter storm cranks up SW of the 
British Isles, the crew was to look for windborne dust plumes to 
develop in northern Algeria, right of track as they crossed northern 
Spain), and Eruption of Soufriere Hills (DYNAMIC EVENT TARGET: Lava 
dome growth and pyroclastic flows are occurring on the Soufriere Hills 
Volcano on the island of Montserrat. Looking right of track first for 
the volcano's smoke and ash plume, then for details of conditions on 
the island itself).

CEO images can be viewed at the website http://eol.jsc.nasa.gov

U.S. and Russian Segment Status (as of 1:22pm EST).

Environmental Control and Life Support (ECLSS) and Thermal Control 
(TCS):  Elektron O2 generator is powered On (32 Amp mode). 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 Purifymode; bed #2 in Purify mode. RS air 
conditioner SKV-1 is On; SKV-2 is Off.

SM Working Compartment: Pressure (mmHg) -- 753; temperature (deg C)
 -- 26.7; ppO2 (mmHg) -- 183.0; ppCO2 (mmHg) -- 2.2 (suspect).
SM Transfer Compartment: Pressure (mmHg) -- 752; temperature (deg C)
 -- 21.1.
FGB Cabin: Pressure (mmHg) -- 752; temperature (deg C) -- 21.3.
Node: Pressure (mmHg) -- 741.34; temperature (deg C) -- 23.9 (shell);
 ppO2 (mmHg) -- 167.0; ppCO2 (mmHg) -- 4.1.
U.S. Lab: Pressure (mmHg) -- 743.30; temperature (deg C) -- 22.0;
 ppO2 (mmHg) -- n/a; ppCO2 (mmHg) -- n/a;
Joint Airlock (Equip. Lock): Pressure (mmHg) -- 743.40; temperature
 (deg C) -- 21.0; shell heater temp (deg C) -- 21.9, ppO2 (mmHg)
 -- n/a; ppCO2 (mmHg) -- n/a.
PMA-1: Shell heater temp (deg C) -- 25.2
PMA-2: Shell heater temp (deg C) -- 16.2
(n/a = data not available)

Propulsion System (PS): Total propellant load available [SM(820)
 + FGB(2753) + Progress(576)] -- 4149 kg (9147 lb) as of 2/27/03. 
 (Capability: SM -- 860 kg; FGB -- 6120 kg).

Electrical Power Systems (EPS):
Both P6 channels fully operational. Beta Gimbal Assembly (BGA) 2B
 and 4B both in auto track (sun following) mode.
SM batteries: All batteries (8) are in "Partial Charge" mode.
FGB batteries: Batteries #2 and #6 are offline; all batteries (4)
 are in "Partial Charge" mode.
Plasma Contactor Unit PCU-1 and PCU-2 both 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-1 is On (primary), EXT-2 is Off.
LA-1, LA-2 and LA-3 MDMs are all operating.
PL-2 MDM is On (primary); PL-1 MDM is Off
APS-1 (automated payload switch #1) and APS-2 are both On.
SM Terminal Computer (TVM): 2 redundant lanes (of 3) operational.
 Lane 1 is out of the set (as of 11/14/02).
SM Central Computer (TsVM): 2 redundant lanes (of 3) operational.
 Lane 1 is out of the set (as of 3/2/03).

Attitude Control Systems:
3 CMGs on-line (CMG-1 failed).
State vector source -- Russian
Attitude source -- Russian
Angular rate source -- Russian.

Flight Attitude:
XPOP (x-axis perpendicular to orbit plane = "sun-fixed" [yaw: 0 deg,
pitch: -8.8 deg., roll: 0 deg]), with CMG/Thruster Assist Momentum
Management).
Solar Beta Angle: -20.4 deg (magnitude decreasing).

Communications & Tracking Systems:
FGB MDM-1 is powered Off; FGB MDM-2 is operational.
All other Russian communications & tracking systems are nominal.
S-band is operating nominally.
Ku-band is operating nominally.
Audio subsystem operating nominally.
Video subsystem operating nominally (VTR1 is operable again).
HCOR (high-rate communications outage recorder) is operating
 nominally.

Robotics:
SSRMS/Canadarm2 based at MBS PDGF2 with Keep Alive (KA) power on
 both strings.
MBS: KA power on both strings.
MT: latched at WS4, with KA power.
POA: KA power on both strings.
RWS (robotics workstations): Lab RWS is Off; Cupola RWS is Off.

ISS Orbit (as of this morning, 6:45am EST [= epoch]):
Mean altitude -- 390.2 km
Apogee -- 398.3 km
Perigee -- 382.1 km
Period -- 92.36 min.
Inclination (to Equator) -- 51.63 deg
Eccentricity -- 0.0012013
Orbits per 24-hr. day -- 15.59
Mean altitude loss in last 24 hours -- 200m
Solar Beta Angle -- -20.4 deg (magnitude decreasing)
Revolutions since FGB/Zarya launch (Nov. '98) -- 24467

For more on ISS orbit and worldwide naked-eye visibility dates/times, 
see http://www.hq.nasa.gov/osf/station/viewing/issvis.html

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