ISS On-Orbit Status 3/5/03<br /><br />All ISS systems continue to function nominally, except as noted previously<br />or below. Space Day 102 for Expedition 6 (from STS-113 launch on 11/23/02).<br /><br />After wake-up (1:00am EST), the crew received rave reviews of their Robotics<br />operations yesterday. Not only did they accomplish all objectives with the<br />SSRMS robotarm, but they also got ahead on tomorrow's objectives as well.<br /><br />In the FGB module, FE-1 Nikolai Budarin deinstalled another<br />no-longer-required electronics box of the SUD motion control system, to make<br />room for stowage, then took digital photographs of the exposed area for<br />later downlink via OCA. [This time it was the UPLU-2 relay users<br />input/output adapter of the program-logic control assembly, the former<br />interface of the assembly to relay-controlled components.]<br /><br />CDR Kenneth Bowersox conducted another session with the FOOT (foot/ground<br />reaction forces during space flight) experiment, which he had prepared<br />yesterday, starting with video setup for taping his subsequent standing EMG<br />calibration (after TVIS harness donning, after running and harness removal,<br />and at end of day), before completing the data collection session. [Wearing<br />black Lycra biking tights with 20 electrodes, and shoes fitted with insoles<br />that measure impact forces on the bottom of the foot for the 12-hr session,<br />Sox completed a typical on-orbit day while reaction forces against the ISS<br />structure were recorded passively to determine how much stress his legs and<br />feet endure. This provides better understanding of the bone loss and loss of<br />muscle mass experienced by astronauts in zero-G (on Mir, for example,<br />cosmonauts lost as much bone mass in a month as post-menopausal women do in<br />a year). The experiment is led by the biomedical engineering department at<br />the Cleveland Clinic Foundation in Cleveland, Ohio.]<br /><br />FE-2/SO Don Pettit continued assisting the ground with MSG (Microgravity<br />Science Glovebox) troubleshooting, today re-installing the P108 connector on<br />the E-Box after rotating the rack. [This activity, one step further toward<br />hopefully pinpointing the root cause soon, mirrored the P107 connector<br />re-install he performed on Monday (3/3). The ground watched the Center<br />Filter Tube Sensor, the Center Delta P Sensor Box and the MTL (moderate<br />temperature loop) Out-Temperature Sensor Conditioner.]<br /><br />Pettit also performed the daily routine inspection of the SOSh life support<br />system, incl. ASU toilet system, while Bowersox conducted the regular<br />routine checkup of the autonomous PCG-STES010 (protein crystal growth-single<br />locker thermal enclosure system #10) payload in the Lab. Budarin worked on<br />the IMS (inventory management system) delta file, tagging up with a ground<br />specialist to straighten out IMS database incongruities which have cropped<br />up.<br /><br />In the interest of conserving videotape resources, Bowersox was provided, on<br />his request, with a plan for reusing MiniDV videotapes (up to a total of 6<br />times). [The plan includes a process designed to help him stay organized on<br />board and keep the ground in sync with the onboard resources status.]<br /><br />All crewmembers performed their regular daily physical exercise on TVIS<br />(treadmill with vibration isolation and stabilization), RED (resistive<br />exercise device), CEVIS (cycle ergometer with vibration isolation) and VELO<br />bike with load trainer.<br /><br />Don Pettit conducted the periodic RED inspection, including retightening of<br />its bolts (if required).<br /><br />On the TVIS, Pettit performed IFM (in-flight maintenance) by replacing and<br />properly torquing the treadmill's 16 clamp rope assembly screws. [These<br />screws, which are coated with a sealant called Vibratite, are intended for<br />one-time installation only. They were not replaced during a prior IFM --<br />which explains theproblem the crew encountered with a TVIS corner bracket.]<br /><br />After yesterday morning's troubleshooting of the DOUG (dynamic operations<br />ubiquitous graphics) failure to properly connect with the Lab RWS (robotics<br />workstation) laptop, additional work on the ground has isolated the problem.<br />Its fix will not be available for tomorrow's SSRMS ops. [The problem was<br />caused by a mismatch between the PCS laptop R3 load version, i.e., upgraded<br />for 12A, and a not-yet-updated data file on the SSC (station support<br />computer) system. Correction is in work.]<br /><br />The crew downlinked a message of greeting to the 30th Anniversary<br />Public-Scientific Readings dedicated to the memory of Yuri Gagarin, a<br />traditional annual event.<br /><br />U.S. and Russian Segment Status (as of 1:20pm EST).<br /><br />Environmental Control and Life Support (ECLSS) and Thermal Control (TCS):<br />Elektron O2 generator is powered On (32 Amp mode). Vozdukh CO2 scrubber is<br />On (Manual mode 5). U.S. CDRA CO2 scrubber is Off. TCCS (trace contaminant<br />control subsystem) is operating. MCA (major constituents analyzer) is<br />operating. BMP Harmful Impurities unit: Absorbent bed #1 in Purify mode; bed<br />#2 in Purify mode. RS air conditioner SKV-1 is On; SKV-2 is Off.<br /><br />SM Working Compartment: Pressure (mmHg) -- 753; temperature (deg C) -- 27.2;<br />ppO2 (mmHg) -- 183.1; ppCO2 (mmHg) -- 2.3 (suspect).<br />SM Transfer Compartment: Pressure (mmHg) -- 752; temperature (deg C) --<br />21.0.<br />FGB Cabin: Pressure (mmHg) -- 752; temperature (deg C) -- 22.3.<br />Node: Pressure (mmHg) -- 741.34; temperature (deg C) -- 23.7 (shell); ppO2<br />(mmHg) -- n/a; ppCO2 (mmHg) -- n/a.<br />U.S. Lab: Pressure (mmHg) -- 743.50; temperature (deg C) -- 22.0; ppO2<br />(mmHg) -- 178.2; ppCO2 (mmHg) -- 4.3;<br />Joint Airlock (Equip. Lock): Pressure (mmHg) -- 743.60; temperature (deg<br />C) -- 21.0; shell heater temp (deg C) -- 21.5, ppO2 (mmHg) -- n/a; ppCO2<br />(mmHg) -- n/a.<br />PMA-1: Shell heater temp (deg C) -- 26.0<br />PMA-2: Shell heater temp (deg C) -- 17.1<br />(n/a = data not available)<br /><br />Propulsion System (PS): Total propellant load available [SM(820) + FGB(2753)<br />+ Progress(576)] -- 4149 kg (9147 lb) as of 2/27/03. (Capability: SM -- 860<br />kg; FGB -- 6120 kg).<br /><br />Electrical Power Systems (EPS):<br />Both P6 channels fully operational. Beta Gimbal Assembly (BGA) 2B and 4B<br />both in auto track (sun following) mode.<br />SM batteries: All batteries (8) are in "Full Charge" mode.<br />FGB batteries: Batteries #2 and #6 are offline; battery #3 is in "Cycle"<br />mode; all batteries (3) are in "Partial Charge" mode.<br />Plasma Contactor Unit PCU-1 and PCU-2 both in Standby mode.<br /><br />Command & Data Handling Systems:<br />C&C-1 MDM is prime, C&C-2 is back-up, and C&C-3 is in standby.<br />GNC-1 MDM is prime; GNC-2 is Backup.<br />INT-1 is operating; INT-2 is Off.<br />EXT-1 is On (primary), EXT-2 is Off.<br />LA-1, LA-2 and LA-3 MDMs are all operating.<br />PL-2 MDM is On (primary); PL-1 MDM is Off<br />APS-1 (automated payload switch #1) and APS-2 are both On.<br />SM Terminal Computer (TVM): 2 redundant lanes (of 3) operational. Lane 1 is<br />out of the set (as of 11/14/02).<br />SM Central Computer (TsVM): 2 redundant lanes (of 3) operational. Lane 1 is<br />out of the set (as of 3/2/03).<br /><br />Attitude Control Systems:<br />3 CMGs on-line (CMG-1 failed).<br />State vector source -- Russian<br />Attitude source -- Russian<br />Angular rate source -- Russian.<br /><br />Flight Attitude:<br />XPOP (x-axis perpendicular to orbit plane = "sun-fixed" [yaw: 0 deg,<br />pitch: -8.8 deg., roll: 0 deg]), with CMG/Thruster Assist Momentum<br />Management).<br />Solar Beta Angle: -15.6 deg (magnitude decreasing).<br /><br />Communications & Tracking Systems:<br />FGB MDM-1 is powered Off; FGB MDM-2 is operational.<br />All other Russian communications & tracking systems are nominal.<br />S-band is operating nominally.<br />Ku-band is operating nominally.<br />Audio subsystem operating nominally.<br />Video subsystem operating nominally (VTR1 is operable again).<br />HCOR (high-rate communications outage recorder) is operating nominally.<br /><br />Robotics:<br />SSRMS/Canadarm2 based at MBS PDGF2 with Keep Alive (KA) power on both<br />strings.<br />MBS: KA power on both strings.<br />MT: latched at WS4, with KA power.<br />POA: KA power on both strings.<br />RWS (robotics workstations): Lab RWS is Off; Cupola RWS is Off.<br /><br />ISS Orbit (as of this morning, 7:36am EST [= epoch]):<br />Mean altitude -- 390.0 km<br />Apogee -- 398.0 km<br />Perigee -- 382.0 km<br />Period -- 92.36 min.<br />Inclination (to Equator) -- 51.64 deg<br />Eccentricity -- 0.0011794<br />Orbits per 24-hr. day -- 15.59<br />Mean altitude loss in last 24 hours -- 210m<br />Solar Beta Angle -- -15.6 deg (magnitude decreasing)<br />Revolutions since FGB/Zarya launch (Nov. '98) -- 24483<br /><br />For more on ISS orbit and worldwide naked-eye visibility dates/times, see<br />http://www.hq.nasa.gov/osf/station/viewing/issvis.html