Status Report

NASA Space Station On-Orbit Status 7 July 2004

By SpaceRef Editor
July 7, 2004
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NASA Space Station On-Orbit Status 7 July 2004

SpaceRef note: This NASA Headquarters internal status report, as presented here, contains additional, original material produced by (copyright © 2004) to enhance access to related status reports and NASA activities.

All ISS systems continue to function nominally except those noted previously or below.

For today’s ADUM/Advanced Diagnostic Ultrasound in Micro-G session, FE/SO Fincke set up the equipment, after which the crewmembers performed the ultrasound “Scan Z” bone scans on each other, taking turns as operator and subject.  Afterwards the hardware was deactivated.  The scan heads were cleaned and stowed as part of closeout operations.    [After activation of the HRF (Human Research Facility) and the video tape recorder (VTR) by the ground early in the morning, Mike powered up the HRF computer and the ADUM hardware.  The bone scans were taken of the subject’s shoulder, elbow, knee and ankle, medically supported from the ground (POIC, Payload Operations & Integration Center) via privatized video and VOX S/G.  The data were also recorded, and the scanning and post-scan activities were videotaped and still-photographed for downlink.]

Previous Reports

ISS On-orbit Status [HQ]
ISS Status [JSC]
Shuttle Processing [KSC]

The two crewmembers conducted the standard fit check of the “Kazbeks”, the contoured shock absorbing seats in the Soyuz 8S descent capsule (SA).   [This required them to don their Sokol pressure suits, get in their seats and use a ruler to measure the gap between the top of the head and the top edge of the structure facing the head.  The results were reported to TsUP.  Kazbek-U couches are designed to withstand g-loads during launch and orbital insertion as well as during reentry and brake-rocket-assisted landing.  Each seat has two positions: cocked (armed) and noncocked. In the cocked position, they are raised to allow the shock absorbers to function during touchdown.  The fit check assures that the crewmember whose body gains in length during longer-term stay in zero-G, will still be adequately protected by the seat liners for their touchdown in Kazakhstan.  8S return is scheduled for October 19.]

CDR Gennady Padalka performed an IMS (inventory management system) audit of medical items and equipment on board, transferring items specified on an uplinked list to Progress 14P as trash.   [Discarded gear includes Plasma-03, Reflotron, Ecosfera, Urolux, Pulse and other kits used during previous Increments, old cables, etc.]

The crew began the lengthy troubleshooting of the failed U.S. EMU (extravehicular mobility unit) spacesuits #3013 and #3005, today focusing on Part 1 of detailed procedures worked out by ground experts.   [Prior to more invasive troubleshooting (i.e., replacement of pump subassemblies or entire fan assemblies), Part 1 activities dealt with reproducing known EMU configurations to compare pre-failure motor currents (amperes) to present failed signatures, in order to determine whether the pump rotors have locked up.  About two hours before the crew started the amperage testing in the U.S. Airlock (A/L), MCC-Houston configured the A/L’s air conditioner (CCAA, common cabin air assembly) and ITCS LTL (internal thermal control system low temperature loop) settings for A/L EVA operations.  Also before start of the procedures, Mike cleared out the A/L’s Equipment Lock and Crew Lock so that umbilicals and UIA (umbilical interface assembly) switches became accessible.]

Padalka began another round of the monthly preventive maintenance of Russian segment air ventilation systems, working one hour in the Funktsionalnyi-Grusovoi Blok (FGB) for a cleanup of the protective mesh screens of its central ventilation fans (TsV1 & TsV2).   [The fans were powered off for the task by ground command, later turned on again.] 

Gennady also uninstalled and replaced the FGB’s two dust collector filters (PS1 & PS2).

MCC-Houston activated the Major Constituents Analyzer (MCA) for another “zero” calibration.  During its measurement operation, Padalka performed the periodic calibration check of the IK0501 gas analyzer (GA) in the Service Module (SM) via its IG-3 oxygen (O2) gas analyzer against the MCA.  Afterwards MCA was switched back to LEM (life extension mode) to preserve its vacuum chamber’s ion pump.   [IK0501 is an automated system for measuring CO2, O2, and H2O in the air, as well as the flow rate of the gas being analyzed.]

The CDR completed the routine maintenance of the SM’s SOZh environment control & life support system, which today included the periodic checkout of the IP-1 airflow sensors in the various RS hatchways and FGB-to-Node hatchway (last time done: 5/26).

Padalka also prepared the regular IMS “delta” file for IMS database update, while Mike did the daily routine status checkup of the autonomous Lab payloads (PCG-STES010, MAMS).

The crew unstowed the “Urolux” and PHS (periodic health status) equipment and set it up for the next session with the PZE MO-9 biochemical urinalysis test and PHS assessment, on tomorrow’s schedule for both crewmembers.   [PZE MO-9 is conducted regularly every 30 days (and also before and after EVAs) and is one of five nominal Russian medical tests adopted by NASA for US crewmembers for IMG PHS (Integrated Medical Group/Periodic Health Status) evaluation as part of the “PHS/Without Blood Labs” exam.]

As reported 7/5, currently there are only two functioning PCS on-line (one in the SM, one in the Lab) after the shell failure of the laptop at the Lab RWS (Robotics Workstation).  This is the Flight Rule-allowed minimum.  Ground teams are working on a forward plan that includes transitioning/converting an SSC (Station Support Computer) or MPSD-2 (Multi-Purpose Support Disc-2) computer to a PCS.

The CDR reported last night the completed transfer of two EDVs of liquid waste (urine) into the Progress 14P Rodnik tanks.

Tonight at 7:20pm EDT (i.e., during crew sleep), TsUP/Moscow will attempt to restart the SM’s SUBA TsVM (Central Computer), which lost the second of its three mutually redundant subsets on 7/2.   [The restart completes in ~100 seconds.  If, in a rare situation, context data are lost during the restart, TsUP will uplink the missing set ASAP.]

Today’s CEO (crew earth observations) photo targets, in the current LVLH attitude no longer limited by flight rule constraints on the use of the Lab nadir/science window, except for the shutter closure and condensation-prevention plan (limited to 90 min. in 24 hours), were Cape Town, South Africa (nadir pass.  The city sprawls inland a long way from the city center at the docks.  More than one 180-mm image will be needed to acquire this target), La Paz, Bolivia (nadir pass over this city that stretches from the deep [and warmer] canyon on the Andean mountain front, up onto the high [cold] desert plateau where the airport can be seen), Pilcomayo River dynamics, N Argentina (this major river is the boundary between Argentina and Paraguay.  Both countries have an interest in controlling the river, which displays the unusual behavior of blocking its own bed and spilling its banks [at the present end point only 100 miles from the mountain front].  A mapping swath from the mountain front out onto the plains following the river is requested.  Nadir pass, with the river trending left of track as ISS proceeded away from the mountain front), and Internal waves, Patagonian Shelf (a break in winter clouds may have allowed a view of internal waves on the shelf just offshore of Patagonia.  Looking left and trying to include some shore features).

CEO images can be viewed at these websites:

See also the website “Space Station Challenge” at:

To view the latest photos taken by the expedition 9 crew visit:

Previous NASA ISS On-orbit Status Reports can be found here. Previous NASA Space Station Status Reports can be found here. Previous NASA Space Shuttle Processing Status Reports can be found here. A collection of all of these reports and other materials relating to Return to Flight for the Space Shuttle fleet can be found here.

U.S. & Russian Segment Status  (as of today, 1:26pm EDT)

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

  • Elektron O2 generator is On.  Vozdukh CO2 scrubber is On.  U.S. CDRA CO2 scrubber is Off.  TCCS (trace contaminant control subsystem) is operating.  SM Gas Analyzer has been calibrated and is used for ppO2 & ppCO2 monitoring.  MCA (major constituents analyzer) is in Life Extending Mode (LEM).  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 panel mods completed 4/8; SKV-2 activation failed 4/20; is now functioning again).  SFOG slot #2 fan suspect (not usable).
  • SM Working Compartment:  Pressure (mmHg) — 742; temperature (deg C) — 25.8; ppO2 (mmHg) — 178.1; ppCO2 (mmHg) — 3.9.
  • SM Transfer Compartment:  Pressure (mmHg) — 751; temperature (deg C) — 20.7.
  • FGB Cabin:  Pressure (mmHg) — 756; temperature (deg C) — 22.0.
  • Node:  Pressure (mmHg) — 753.4; temperature (deg C) — 22.9 (shell); ppO2 (mmHg) — n/a; ppCO2 (mmHg) — n/a.
  • U.S. Lab:  Pressure (mmHg) — 755.6; temperature (deg C) — 24.7; ppO2 (mmHg) — n/a; ppCO2 (mmHg) — n/a.
  • Joint Airlock (Equip. Lock):   Pressure (mmHg) — 755.7; temperature (deg C) — 24.5; shell heater temp (deg C) — n/a, ppO2 (mmHg) — n/a; ppCO2 (mmHg) — n/a.
  • (n/a = data not available)
  • PMA-1:  Shell heater temp (deg C) — n/a
  • PMA-2:  Shell heater temp (deg C) — n/a.

Electrical Power Systems (EPS):

  • Both P6 channels fully operational.  BGA (beta gimbal assembly) 2B and 4B both in directed position (Dual angle/”blind” mode, non solar-tracking, biased for drag reduction).
  • SM batteries:  All batteries (8) are on line in “Partial Charge” mode.  
  • FGB batteries:  Battery #5 is off line; all other batteries (5) are on line in “Partial Charge” mode.
  • Plasma Contactor Unit PCU-1 is in Standby mode; PCU-2 is in Standby mode.

Command & Data Handling Systems:

  • C&C-1 MDM is prime, C&C-2 is backup, and C&C-3 is in standby.
  • GNC-2 MDM is prime; GNC-1 is backup.
  • INT-2 is operating; INT-1 is Off.
  • EXT-1 is On (primary), EXT-2 is Off (backup).
  • LA-1, LA-2 and LA-3 MDMs are all operating.
  • PL-1 MDM is Off; PL-2 MDM is Operational.
  • APS-1 (automated payload switch #1) and APS-2 are both On.
  • SM Terminal Computer (TVM): 2 redundant lanes (of 3) operational (string 1 dropped out 11/22/03).
  • SM Central Computer (TsVM): 2 redundant lanes (of 3) operational (string #3 dropped out 10/22/03).
  • FGB MDM-1 is Off (failed, 11/21/03); MDM-2 is Operational.

Propulsion System:

  • Total propellant load available: 3928 kg (8660 lb) as of 7/1/04;  [SM(552) + FGB(2772) + Progress M(639)].  (Capabilities: SM — 860 kg; FGB — 6120 kg).

Attitude Control Systems:

  • 3 CMGs on-line (CMG-1 failed, since 6/6/02; CMG-2’s RPC-17 failed 4/21/04; was replaced 6/30/04).
  • State vector source — U.S. SIGI-1 (GPS)
  • Attitude source — U.S. SIGI-1 (GPS)
  • Angular rate source — RGA-1

Flight Attitude:

  • LVLH XVV (local vertical/local horizontal = “earth-fixed”: z-axis in local vertical, x-axis in velocity vector [yaw: -10 deg, pitch: -9 deg, roll: 0 deg]), with CMG/TA (thruster assist) Momentum Management, until 6/28, following the EVA.

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 (may require a mask).
  • Audio subsystem is operating nominally (IAC-1 is prime, IAC-2 is off).
  • Video subsystem operating nominally.
  • HCOR (high-rate communications outage recorder) is operating nominally.


  • SSRMS/Canadarm2 based at Lab PDGF/LEE A, operational on redundant string, off on prime.
  • MBS: KA (keep alive) 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 Location NOW

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ISS Orbit  (as of this morning, 7:26am EDT [= epoch]):

  • Mean altitude — 360.0 km
  • Apogee height — 363.9 km
  • Perigee height — 356.0 km
  • Period — 91.7 min.
  • Inclination (to Equator) —  51.6304 deg
  • Eccentricity — 0.0005865
  • Solar Beta Angle — 62.3 deg
  • Orbits per 24-hr. day — 15.69
  • Mean altitude loss in last 24 hours — 40 m
  • Revolutions since FGB/Zarya launch (Nov. ’98)  — 32150

ISS Altitude History

Apogee height Mean AltitudePerigee height

ISS Altitude History

For more on ISS orbit and worldwide ISS naked-eye visibility dates/times, see In addition, information on International Space Station sighting opportunities can be found at on NASA’s Human Spaceflight website. The current location of the International Space Station can be found at at NASA’s Marshall Space Flight Center. Additional satellite tracking resources can be found at

SpaceRef staff editor.