This Echo is READ ONLY !   NO Un-Authorized Messages Please!
 ~~~~~~~~~~~~~~~~~~~~~~~~   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

8 Jul 2003

ISS On-Orbit Status 3 Jul 2003

Part 3 of 3

U.S. and Russian Segment Status (as of 1:30pm 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 off).
RS air conditioner SKV-1 is On; SKV-2 is Off.
SM Working Compartment: Pressure (mmHg) -- 742; temperature (deg C)
-- 27.0; ppO2 (mmHg) -- data invalid ; ppCO2 (mmHg) -- data invalid .
SM Transfer Compartment: Pressure (mmHg) -- 751; temperature (deg C)
-- 20.4.
FGB Cabin: Pressure (mmHg) -- 752; temperature (deg C) -- 22.3.
Node: Pressure (mmHg) -- 741.98; temperature (deg C) -- 22.4 (shell);
ppO2 (mmHg) -- 171.2; ppCO2 (mmHg) -- 4.6.
U.S. Lab: Pressure (mmHg) -- 743.81; temperature (deg C) -- 23.2;
ppO2 (mmHg) -- n/a; ppCO2 (mmHg) -- n/a.
Joint Airlock (Equip. Lock): Pressure (mmHg) -- 743.81; temperature
(deg C) -- 24.8; shell heater temp (deg C) -- 22.0, ppO2 (mmHg) --
n/a; ppCO2 (mmHg) -- n/a.
PMA-1: Shell heater temp (deg C) -- 23.5
PMA-2: Shell heater temp (deg C) -- 21.8.
(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 mode, non solar-tracking, drag
reduction).. SM batteries: Battery #4 is disconnected (failed 6/16);
battery #8 is in "Cycle" mode; all other batteries (6) are in
"Partial Charge" mode. Batteries #1, #2 and #3 showing degraded
capacity. FGB batteries: Battery #3 is offline; all other batteries
(5) are in "Partial Charge" mode. Plasma Contactor Unit PCU-1 in
Standby mode; PCU-2 in Discharge 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: 2.43 deg (magnitude increasing).
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 (on string 2).
Ku-band is operating nominally.
Audio subsystem is operating nominally [IAC-1 (internal audio
controller #1) being analyzed after self-test error. IAC-2 is prime.]
Video subsystem operating nominally.
HCOR (high-rate communications outage recorder) is operating
nominally.

Robotics:

SSRMS/Canadarm2 based at MBS PDGF #1 with Keep Alive (KA) power on
both strings.
MBS: KA power on both strings.
MT: latched and mated at WS4.
POA: KA power on both strings.
RWS (robotics workstations): Lab RWS is On (DCP connected); Cupola
RWS is Off.
ISS Orbit (as of this morning, 6:48am EDT [= epoch]):

Mean altitude -- 387.3 km
Apogee -- 392.5 km
Perigee -- 382.0km
Period -- 92.30 min.
Inclination (to Equator) -- 51.63 deg
Eccentricity -- 0.0007737
Orbits per 24-hr. day -- 15.60
Solar Beta Angle -- 2.43 deg (magnitude increasing)
Mean altitude loss in last 24 hours -- 90 m
Revolutions since FGB/Zarya launch (Nov. '98) -- 26354
For more on ISS orbit and worldwide naked-eye visibility dates/times,
see http://www.hq.nasa.gov/osf/station/viewing/issvis.html

 - END OF FILE -
==========

@Message posted automagically by IMTHINGS POST 1.30
---