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ISS On-Orbit Status, 18-08-2003
On-Orbit Status 18 Nov 2003
All ISS systems continue to function nominally, except as noted previously or below. Week 16 is underway for Expedition 7. With undocking of Progress-247/10P only nine days away, attention is focusing on loading the cargo vehicle with approved deorbit items and their tracking with the IMS (inventory management system). [Today's timeline had 2.5 hrs. of crewtime blocked out for CDR Yuri Malenchenko and 2 hrs. for FE/SO Ed Lu. Ground specialists have provided a new list of items identified for disposal and coordinated through the normal process, to be updated as required.] The crew has begun work on the Russian TCS (thermal control system, STR) in the Service Module (SM), after careful review of the planned procedures by safety personnel. The IFM (in-flight maintenance) requires the removal of an electric pump unit (ENA) from the KOB-2 loop's replaceable pump panel (SPN). The task is scheduled for two days: today the crew drained oolant from the SPN lines, making sure that none of it leaks into the SM Working Compartment (RO). Tomorrow, they will deinstall the ENA pump, working with hack saw and bone saw to cut pipes and brackets. [The two KOB internal thermal loops control the removal of metabolic heat and heat emitted by working equipment; they also establish specific temperature conditions for the cabin atmosphere. The excess heat is passed from the coolant through liquid-liquid heat exchangers (ZhZhT) into the active external thermal control system (KOKh) for subsequent radiation into open space. Each loop contains 118 liters of "Triol" coolant fluid, i.e., water with a 30 percent solution of glycerin (to lower the freezing point to 7 degC) plus biocide and UV-light-sensitive additives to aid in leak detection. It is nontoxic and poses no hazard to the crew. One liter of Triol can absorb about 14 cubic cm of air.] Yuri Malenchenko completed the first of several downlinks of video footage recorded on the Russian/German Plasma Crystal-3 (PK-3) payload on 7/31. The next-day's (8/1) PK-3 run will be downlinked tomorrow. [The experiment looks at plasma inside an evacuated work chamber, i.e., fine particles charged and excited by RF/radio frequency power. On 7/31, Yuri monitored the investigation of the behavior of large particles (from Dispenser B), in two parts, viz., auto search for conditions promoting strong particle agglomeration (6 min.), and auto search for conditions creating "void-free" structures while varying HF discharge energy, chamber pressure, and number of particles involved (75 min.).] Ed Lu conducted the daily routine maintenance of the SM's SOZh life support system (including ASU toilet facilities), did the regular status checkup of Lab payloads (PCG-STES, MAMS), and prepared the daily IMS delta file for updating the inventory management system's database. Both crewmembers completed their daily 2.5-h program of physical exercise (aerobic & anaerobic) on TVIS treadmill, RED expander and on the Russian VELO cycle ergometer with load trainer. Before sleep time tonight, Malenchenko is to set up the "Urolux" equipment for his and Ed Lu's next session with the Russian biochemical urine test (PZE MO-9), on tomorrow's schedule for both crewmembers. POIC (Payload Operations & Integration Center) has requested the use of a spare laptop to replace the failed SAMS (space acceleration measurement system) interface control unit (ICU) laptop. [The laptop stopped sending acceleration and health data to the ground on 7/31. Current draw dropped approximately 1 amp. Subsequent troubleshooting by the crew exonerated batteries and interface electronics, and established that the laptop is faulty. Since there will be four new NGLs (next generation laptops, IBM ThinkPad A31p] coming up with Progress 12P, the plan is to borrow an available spare 760XD machine.] The station's cabin atmosphere is periodically refreshed with gaseous oxygen (O2) from Progress 10P O2 tanks (not required today). After 10P undocking, repress oxygen will also be transferred from Progress 11P. [The Elektron oxygen generator continues to be off, to conserve its service life. The repress valve cycling, by the crew, relies on the U.S. MCA (major constituents analyzer) or CSA-CP (compound specific analyzer-combustion products) instruments to measure the 10mmHg pressure difference.] On 8/20-21, MCC-Moscow/TsUP is planning to refuel the FGB tanks from Progress 10P. The transfer of fuel (unsymmetrical dimethyl hydrazine, UDMH) will be preceded, as usual, by a vacuum purge of the fuel (ZUG) lines, to vent residuals in the plumbing between Progress and SM into space. The purge, scheduled for tomorrow (8/19) will be recorded on video. [As previous recordings have shown, there will be a stream of gas-liquid mixture resembling snow. The fuel will flow with variable intensity of the liquid phase stream, like "fireworks". Since the 10P's oxidizer tank is suspect, there will be no oxidizer transfer (nitrogen tetroxide, N2O4).] Starting at 5:00am EDT this morning and running for several hours, MCC-H and its support group in Moscow (HSG) completed a BCC (backup control center) dry-run in test mode, with no involvement of the ISS crew or vehicle. The dry-run was fully successfully. [BCC utilizes the HSG command server and telemetry server. In test mode, HSG (as BCC) sends a single not-for-uplink PPCP (preplanned command packet) to MCC-M/TsUP, then cancels it after successful transmission. MCC-M plays back ACT (American contingency telemetry) recorded earlier, with HSG confirming successful receipt. TsUP commanding to the Russian segment (RS) via U.S. S-band as well as MCC-H-to-TsUP flow of status telemetry are also not affected, but MCC-H has no real-time telemetry and command capability via Russian ground stations (RGS) during the dry-run.] Troubleshooting of EMUs (extravehicular mobility units) #3013 and #3005 continues on the ground. A replacement filter for the gas trap of #3013 is manifested on Soyuz 7S. Next step planned is the discharge, on 8/20, of the EMU batteries used last week. Procedures were uplinked for a crew review of steps to be taken in the event of EPS BGA (Electric Power System/Beta Gimbal Angle) motor trips, to account for recent changes in solar array rotation operating concepts. [In the attitudes XPOP and YVV/"barbecue" (y-axis in velocity vector), the BGAs are set to Autotrack or Directed Position, and as long as attitude remains stable, a BGA motor trip at this time would have essentially no impact to power generation. In XVV (x-axis in velocity vector), however, the BGAs are set to a "triple angle" operating mode, with sun tracking during insolation (orbital day) and fixed in minimal drag angle during eclipse (orbital night), in which a BGA motor trip could potentially impact power generation significantly. The Caution system would then alert the crew, which would take specific steps.] Today's CEO (crew earth observation) targets, limited in the current XPOP attitude by flight rule constraints on the use of the Lab nadir/science window, and including the targets of the Lewis & Clark 200-year memorial locations, were Atlanta, GA (nadir pass), Harpers Ferry, WVA (LEWIS & CLARK SITE: This historic town is located at the confluence of the Potomac and Shenandoah rivers where they break through the Blue Ridge Mountains. Crew was asked to use the long lens for details of this small target; two opportunities), Washington, D.C. (nadir pass, two opportunities), Gulf of Maine plankton (pointing right of track, including some coastline for orientation if possible), Missouri R. sites (LEWIS & CLARK SITE: Shooting detailed views near nadir as ISS crossed the easy-to-see Missouri River), Three Forks, MT (LEWIS & CLARK SITE: Looking at nadir, south of Canyon Ferry Lake. Lewis and Clark named the three rivers which meet at this point to form the Missouri River (July 25, 1805), York's Island, (Townsend, MT) (LEWIS & CLARK SITE: Pointing a touch left at the south end of the only large lake in the area, Canyon Ferry Lake, the visual cue. The group of isl ands is located on the Missouri river, south of Townsend, Montana. The area bears the name of Clark's servant and boyhood companion, York), Siberian fires (Dynamic event. Numerous fires are burning left of track in the central Amur River valley region. Looking for smoke pall. Smoke plumes appear on the satellites as far east as the Sea of Okhotsk, [out of ISS view]), Yangtze River Delta (nadir pass. Images of the coastline where human intervention is intensive were requested), Shanghai, China (nadir pass), Kabul, Afghanistan (looking just right of track on the wide valley floor), Lahore, Pakistan (major city, at nadir), Alexandria, Egypt (pointing a touch left), Pyramids of Gizeh, Egypt (pointing a touch left), and Cairo, Egypt (nadir pass), 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/ U.S. and Russian Segment Status (as of 2:15pm EST). Environmental Control and Life Support (ECLSS) and Thermal Control (TCS): Elektron O2 generator is powered Off. 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. RS air conditioner SKV-1 is On; SKV-2 is Off. SM Working Compartment: Pressure (mmHg) -- 742; temperature (deg C) -- 26.7 ; ppO2 (mmHg) -- data invalid; ppCO2 (mmHg) -- data invalid. SM Transfer Compartment: Pressure (mmHg) -- 751; temperature (deg C) -- 20.9. FGB Cabin: Pressure (mmHg) -- 744; temperature (deg C) -- 23.0. Node: Pressure (mmHg) -- 740.71; temperature (deg C) -- 23.7 (shell); ppO2 (mmHg) -- n/a; ppCO2 (mmHg) -- n/a. U.S. Lab: Pressure (mmHg) -- 742.00 temperature (deg C) -- 23.1; ppO2 (mmHg) -- 163.1; ppCO2 (mmHg) -- 3.8. Joint Airlock (Equip. Lock): Pressure (mmHg) -- 742.9; temperature (deg C) -- 26.7; shell heater temp (deg C) -- 24.8, ppO2 (mmHg) -- n/a; ppCO2 (mmHg) -- n/a. PMA-1: Shell heater temp (deg C) -- 24.0 PMA-2: Shell heater temp (deg C) -- 13.2. (n/a = data not available) Propulsion System (PS): Total propellant load available: 3616 kg (8038 lb) as of 8/7 [SM(774) + FGB(2842) + Progress M(0) + 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 Autotrack (solar tracking with 45 deg bias for drag reduction). SM batteries: Battery #5 is off line(Capacity Restoration mode, ROM); battery #6 is in "Cycle" mode; all other batteries (6) are in "Partial Charge" mode. Batteries #1and #3 showing degraded capacity. FGB batteries: Battery #1 is off line (Capacity Restoration mode, ROM); all other batteries (5) 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: XPOP (x-axis perpendicular to orbit plane = "sun-fixed" [yaw: 0.5 deg, pitch: -9.0 deg., roll: 0 deg]), with CMG TA (thruster assist). 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-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, 7:32am EDT [= epoch]): Mean altitude -- 383.8 km Apogee -- 389.0 km Perigee -- 378.6 km Period -- 92.23 min. Inclination (to Equator) -- 51.63 deg Eccentricity -- 0.0007737 Orbits per 24-hr. day -- 15.61 Mean altitude loss in last 24 hours -- 75 m Revolutions since FGB/Zarya launch (Nov. '98) -- 27073 For more on ISS orbit and worldwide naked-eye visibility dates/times, see http://www.hq.nasa.gov/osf/station/viewing/issvis.html -- ---- Jacques :-) Editor: www.spacepatches.info ------------------------------------------------------ |
#2
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ISS On-Orbit Status, 18-08-2003
Tomorrow, they will deinstall the ENA pump, working with
hack saw and bone saw to cut pipes and brackets. [The two KOB internal thermal loops control the removal of metabolic heat and heat emitted Gee dont you think fittings should of been mandatory on a pump. Its not realistic that it lasts indefinetely/ |
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ISS On-Orbit Status, 18-08-2003
Christopher James Huff wrote in
: In article , (Hallerb) wrote: Tomorrow, they will deinstall the ENA pump, working with hack saw and bone saw to cut pipes and brackets. [The two KOB internal thermal loops control the removal of metabolic heat and heat emitted Gee dont you think fittings should of been mandatory on a pump. Its not realistic that it lasts indefinetely/ Especially one in a "replaceable pump panel". Let's restore a little context he The crew has begun work on the Russian TCS (thermal control system, STR) in the Service Module (SM), after careful review of the planned procedures by safety personnel. The IFM (in-flight maintenance) requires the removal of an electric pump unit (ENA) from the KOB-2 loop's replaceable pump panel (SPN). The task is scheduled for two days: today the crew drained oolant from the SPN lines, making sure that none of it leaks into the SM Working Compartment (RO). Tomorrow, they will deinstall the ENA pump, working with hack saw and bone saw to cut pipes and brackets. [The two KOB internal thermal loops This was not a NASA design. -- JRF Reply-to address spam-proofed - to reply by E-mail, check "Organization" (I am not assimilated) and think one step ahead of IBM. |
#5
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ISS On-Orbit Status, 18-08-2003
In article ,
"Jorge R. Frank" wrote: Christopher James Huff wrote in : In article , (Hallerb) wrote: Tomorrow, they will deinstall the ENA pump, working with hack saw and bone saw to cut pipes and brackets. [The two KOB internal thermal loops control the removal of metabolic heat and heat emitted Gee dont you think fittings should of been mandatory on a pump. Its not realistic that it lasts indefinetely/ Especially one in a "replaceable pump panel". Let's restore a little context he The crew has begun work on the Russian TCS (thermal control system, STR) in the Service Module (SM), after careful review of the planned procedures by safety personnel. The IFM (in-flight maintenance) requires the removal of an electric pump unit (ENA) from the KOB-2 loop's replaceable pump panel (SPN). The task is scheduled for two days: today the crew drained oolant from the SPN lines, making sure that none of it leaks into the SM Working Compartment (RO). Tomorrow, they will deinstall the ENA pump, working with hack saw and bone saw to cut pipes and brackets. [The two KOB internal thermal loops This was not a NASA design. Who said it was? -- Christopher James Huff http://home.earthlink.net/~cjameshuff/ POV-Ray TAG: http://tag.povray.org/ |
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ISS On-Orbit Status, 18-08-2003
Christopher James Huff wrote in news:cjameshuff-
: In article , "Jorge R. Frank" wrote: This was not a NASA design. Who said it was? Nobody did, but the fact was lost in the quoting. -- JRF Reply-to address spam-proofed - to reply by E-mail, check "Organization" (I am not assimilated) and think one step ahead of IBM. |
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ISS On-Orbit Status, 18-08-2003
Nobody did, but the fact was lost in the quoting. I realized it was russian, but still the design should allow replaceable parts. A dead russian module hurts everything. |
#8
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ISS On-Orbit Status, 18-08-2003
Tomorrow, they will deinstall the ENA pump, working with
hack saw and bone saw to cut pipes and brackets. procedures by safety personnel. The IFM (in-flight maintenance) requires the removal of an electric pump unit (ENA) from the KOB-2 loop's replaceable pump panel (SPN). Seems to me that theree is a replaceable pump panel, but they decided to fix the panel instead of replacing it with a spare. (lack of cargo capacity during shuttle standdown might be the major reason). If a unit is marked "no serviceable parts inside", do you complain when you try to take it apart and it isn't so easy ? Does the russian segment use welded joints instead of screwable fittings ? Would this result in a significant enough weight savings ? |
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ISS On-Orbit Status, 18-08-2003
Tomorrow, they will deinstall the ENA pump, working with hack saw
and bone saw to cut pipes and brackets. Likely I misunderstand something here, but isn't it unusual to use serious emergency medical gear for non-medical, presumably non-dire-emergency reasons? Or do they have several bone saws? |
#10
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ISS On-Orbit Status, 18-08-2003
(Hallerb) wrote:
Nobody did, but the fact was lost in the quoting. I realized it was russian, but still the design should allow replaceable parts. A dead russian module hurts everything. That's been a real problem for the Russians, and not just in their space program. Somewhere along the line, they don't appear to have gotten the concept of LRU's. D. -- The STS-107 Columbia Loss FAQ can be found at the following URLs: Text-Only Version: http://www.io.com/~o_m/columbia_loss_faq.html Enhanced HTML Version: http://www.io.com/~o_m/columbia_loss_faq_x.html Corrections, comments, and additions should be e-mailed to , as well as posted to sci.space.history and sci.space.shuttle for discussion. |
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