ISS On-Orbit Status, 11-07-2003

ISS On-Orbit Status 11 Jul 2003

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

CDR Yuri Malenchenko performed maintenance on the common power switching
unit (BSK) of the Russian segment's (RS) onboard equipment control system
(SUBA), replacing five fuses in a circuit breaker plug with new fuse links,
then storing the old fuses as spares. The activity was supported by tag-up
with MCC-M. [The SUBA controls, monitors, and diagnoses Service Module (SM)
systems status. It operates using sensor output signals and command radio
link SM functional outputs, onboard computer system (BVS) units, SM control
panels, and system relay outputs. Its software resides in the SM central
computer (TsVM) and terminal computer (TVM). The BSKs are used to switch
electrical power and protect electrical circuits with fuses against
overloads.]

Later, Malenchenko reconfigured electronic cables in the SM to connect the
Regul-OS antenna feeder unit (AFU) to the antenna feed in a new arrangement.
This task was deferred from 6/24.

FE/SO Ed Lu performed another ppCO2 (carbon dioxide partial pressure) data
take from the new CSA-CP (compound specific analyzer-combustion products)
brought up on 11P. (Last time done: 7/3). [CSA-CP is a toxicology
monitoring device for early CO detection/warning and post-fire
decontamination. It also checks for hydrogen chloride (HCl) and other
combustion products and contaminants. Data takes are regularly collected
for downlink.]

Malenchenko performed the periodic air sampling in the station, first using
the standard Russian AK-1M sampler device in the SM and FGB. Later, testing
for CO (carbon monoxide) levels, he collected SM air samples with the IPD
Draeger tubes sampler.

Ed Lu conducted an inventory and inspection of fire ports in the Node, to
verify emergency clearance constraints. [Primary purpose was to video
record the fire ports (panel access openings) for ground evaluation of
potential blocking in an emergency. Rearrangement of easily movable items
could be done at the discretion of the crew,.]

The Science Officer also took documentary photography for POC (Payload
Operations Center) of the MSG (microgravity science glovebox) umbilical
connections, for the historical record. [FOV (field-of-view) data and
downlink info was uplinked overnight.]

The CDR concluded the current run of the Molniya-SM/LSO experiment and
uninstalled its hardware from SM window #3 for stowage. [This latest
session was started on 7/7.]

After the aborted installation of the electrical heater of the catalyst
cartridge (PKF-T) in the SM's micropurification filtration system (BMP) on
7/2, which apparently did not fit in place, Malenchenko today was scheduled
to check the dimensions of the heater unit and tag up with ground
specialists via S-band.

Later, Yuri continued the latest maintenance cycle on the RS ventilation
system, today removing and replacing the two PS1/PS2 dust collector filters
in the FGB air ventilation system, disposing of the old filters (last time
done: 6/6).

After a very successful week's run, the current EarthKAM (Earth Knowledge
Acquired by Middle school students) operations came to an end today. Ed Lu
deactivated the system, dismantled the equipment at the Lab nadir window and
stowed its components. [This was the first ever "Summer" mission for EK and
the results have reportedly been "terrific". In addition to the normal
student use, many teachers received hands-on training so they can bring EK
into their classrooms.]

Ed supported the ongoing NGL (Next Generation Laptop) testing, which today
called for the third data collection and log file take. [Ed's periodic
support consists of copying the accumulated files of the automated test
program from the new laptop's microdrive over to the SSC (station support
computer) laptop for data collection and subsequent downlink. The
microdrive is then returned to the NGL and the DOS-based test program
restarted.]

Ed Lu completed his ninth weekly filling-out of the FFQ (food frequency
questionnaire), which keeps a log of his nutritional intake over time on
special medical equipment computer (MEC) software.

Yuri Malenchenko attended to his regular daily inspection of the BIO-5
Rasteniya-2 ("Plants-2") experiment which studies growth and development of
plants (peas) under spaceflight conditions in the Lada-2 greenhouse.

The CDR also completed the regular periodic (weekly) inspection of the
active BRPK-1 air/liquid condensate separator in the SM.

The SO performed the periodic transfer of physical exercise data files of
the TVIS treadmill, RED resistive exerciser and CEVIS cycle ergometer to the
MEC (medical equipment computer), for subsequent downlink to the ground
(last time done: 7/3). [The file transfers involve PCMCIA (portable
computer memory card international adapter) cards from TVIS and CEVIS, plus
the entries from the RED exercise log book, individually for each
crewmember.]

Later, Ed Lu also copied the accumulated data files from the receiving
stations of the wrist-worn HRM (heart rate monitor) to the MEC for downlink,
then deleted them on the HRM (last time done: 7/3).

On the operational PCS (portable computer system) laptops in the ISS, Ed
performed the regular once-a-week maintenance reboot.

Yuri prepared the daily inventory management system (IMS) "delta" file for
updating the database and conducted the weekly IMS tagup with the ground via
S-band, in response to a number of uplinked questions on stowage locations.

Ed Lu took care of the daily status checkup of autonomous Lab payloads
(SAMS, MAMS, PCG-STES010).

Also on Ed's schedule was the third session for his recording of video
scenes of a two-day onboard tour for the "Live on ISS" PAO TV program,
started on Thursday. Today, he edited the recordings, which will be
downlinked on 7/17 (Thursday next week). The downlink, with live crew
narration, will be aired on NASA TV.

At 10:50am EDT, Yuri Malenchenko participated in a teleconference with
school children at TsUP/Moscow in a PAO TV downlink initiated by the RS
automated daily time sequencer (SPP). [The live-TV exchange featured
student winners of a Space Science Projects competition from different towns
of Russia, assembled at TsUP for the ISS event.]

Later in the day (3:55pm EDT), Ed Lu is scheduled to tag up with science
students at Los Alamos University, NM, via S-band/audio.

The crew will also have their weekly teleconference with the ISS Flight
Director at MCC-H.

At 2:41pm EDT, the station will maneuver to LVLH +YVV/"barbecue" attitude
(vertical y-axis in velocity vector, i.e., facing "top" forward) for six
orbits, to allow gathering temperature and power data for the scheduled
mid-Beta angle range analysis test. Afterwards, at 1:36am tomorrow morning,
flight attitude will return to XPOP. [Projected power availability in YVV
(autotrack): 24.1 kW from 2B & 4B combined. XPOP (autotrack w/bias): 22.4
kW from both.]

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).

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, 7:16am EDT [= epoch]):

Mean altitude -- 386.7 km
Apogee -- 392.3 km
Perigee -- 381.0 km
Period -- 92.29 min.
Inclination (to Equator) -- 51.63 deg
Eccentricity -- 0.0008337
Orbits per 24-hr. day -- 15.60
Solar Beta Angle -- 38.5 deg (magnitude increasing)
Mean altitude loss in last 24 hours -- 100 m
Revolutions since FGB/Zarya launch (Nov. '98) -- 26479
For more on ISS orbit and worldwide naked-eye visibility dates/times, see
http://www.hq.nasa.gov/osf/station/viewing/issvis.html

Did you know that.

..the S-band system transmits 8730 words (2 bytes per word) of data every
second? That's 1508 Mb (megabytes) of data per day. That means that since
S-band has been activated, approximately 1.425 Tb (terabytes) of data have
been transmitted to the ground. That equals about 15% of the printed
collection of the Library of Congress!



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Jacques :-)

Editor: www.spacepatches.info

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