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From ISS On-Orbit Status Report for 21/07/2010:
FE-2 Tracy Caldwell-Dyson had several hours to perform Day 2 activities of repairing the USOS OGS (Oxygen Generation System) which performed an unexpected "Fast Shutdown" on 05/07, probably due to blockage in several cells within the H2 (Hydrogen) Dome ORU (Orbit Replacement Unit). [Yesterday's Day 1 activities were delayed by an RPCM (Remote Power Controller Module) trip. Today, Tracy started off with a set-up activity to prepare for the OGS forward flush. After the ground completed this flush, Tracy configured for the reverse flush which was increased in duration due to the lower than expected flow rate. After the reverse flush was complete, Tracy was to put everything in a good overnight configuration. The H2 Dome R&R (Removal & Replacement) activities planned for today were moved to FE-6 Shannon Walker's timeline tomorrow (22/07). This should get OGS ready for activation, which will be attempted with the spare Pump ORU installed, but a second Pump ORU R&R was to be conducted if the reverse flush has not recovered the spare Pump.]
FE-3 Mikhail Kornienko & FE-5 Fyodor Yurchikhin continued their preparations for Russian EVA-25 in the Orlan spacesuits on 26/07 and the suited training exercise on 23/07, performing further Orlan spacesuit activities in DC-1 (Docking Compartment-1) "Pirs".
After configuring the DC-1 STTS communications link to support their presence, Mikhail & Fyodor:
• Readied Orlan spacesuit replaceable elements & equipment (SMEG).
• Installed the BNP portable repress O2 (Oxygen) tank in the SM (Service Module) RO (Working Compartment).
• Completed individual fit sizing (central strap, lateral strap, hip strap, calf strap, arm cable and shoulder size, front & rear) on their Orlan-MK spacesuits.
• Ran leak checks & valve functionality tests on the Orlans and their BSS interface units in the DC-1 & SM PkhO (Transfer Compartment) from the EVA support panels (POV).
• Conducted pressure checks on the SM BK-3 O2 tanks and the BNP portable repress O2 tank in DC-1.
• Restored DC-1 STTS communications to nominal settings.
Yurchikhin installed the second set of 825M3 Orlan batteries in the battery chargers and initiated the charging.
CDR Alexander Skvortsov readied Progress M-05M/37P, docked at DC-1 Nadir, for undocking if required in a Russian EVA-25 contingency. Steps included:
• Installing the docking probe (StM, Stykovochnovo mekhanizma) on Progress' hatch.
• Activating Progress’ electronics and taking out the ventilation/heating air duct.
• Closing the hatches.
• Removing the QD (Quick Disconnect) screw clamps (BZV) of the docking & internal transfer mechanism (SSVP) which rigidized the joint,
• Starting the standard one-hour leak checking of the SU docking vestibule and fuel/oxidizer transfer line interface between Progress and DC-1.
• Downlinking Sasha's formal report on loading completion and the video depicting the close-out activities, for review by ground specialists. [During hatch closure, leak checking and initial clamp installation, Russian thrusters were inhibited due to load constraints from ~10:20 AM to 12:00 PM GMT.]
After deconfiguring the CEVIS (Cycle Ergometer with Vibration Isolation System) in the Lab to make room, Shannon performed Part 4 of WORF (Window Observational Research Facility) outfitting. CEVIS was later re-installed. [This was the final outfitting activity for WORF until it is handed over to the Payloads community for use. During today's task Shannon configured/adjusted the Bumpshield, Shutter Actuator Mechanism (SAM) and Air Knife for nominal operations, performed photo documentation, installed the WORF hatch and completed final closeouts. Background: WORF, which surrounds the 20 inch Lab science window, serves for attaching sensors (cameras, multispectral scanners, and other instruments). It provides attachment points and power & data transfer capability for instruments to be mounted in the window. Multiple instruments can be mounted at the same time. The rack is designed to allow rapid changes of equipment by the crew. WORF has a bracket for small cameras such as 35mm, 70mm and camcorders. Larger payloads requiring nonstandard attachment or additional instrument isolation must supply their own brackets or platforms which mount to the WORF using available attachment points. WORF also provides protection for the interior of the Lab window and can control stray light exchange between the Lab interior and the external station environment.]
In the US "Quest" A/L (Airlock), FE-4 Doug Wheelock terminated the recharge of the first batch of EVA batteries in the BSA (Battery Stowage Assembly) and initiated the second round.
Also in the A/L, Doug conducted the standard one-hour scrub of EMUs (Extravehicular Mobility Units) #3005 & #3009 cooling loops with their SCUs (Service & Cooling Umbilicals), filtering ionic & particulate matter (via a 3-micron filter), then reconfigured the cooling loops and started the ~2 hour biocide filtering. The activity included leak checking on the loops, with remedial actions to be taken if required. [Loop scrubbing, incl. iodination of the LCVGs (Liquid Cooling & Ventilation Garments) for biocidal maintenance is done to eliminate any biomass and particulate matter that may have accumulated in the loops.]
Additionally, Doug performed an inspection of the EVA BRTs (Body Restraint Tethers) to be used in US EVA-15.
SLAMMD Postponement:
Today's body mass measurement activities of Tracy Caldwell-Dyson, Doug Wheelock & Shannon Walker with the SLAMMD (Space Linear Acceleration Mass Measurement Device) BMM (Bode Mass Measurement) equipment were postponed due to a missing deceleration pad (of two required). [Background: SLAMMD, performed first on Expedition 12 in December 2005, provides an accurate means of determining the on-orbit mass of humans spanning the range from the 5th percentile Japanese female to the 95th percentile American male. The procedure, in accordance with Newton's 2nd Law of Motion, finds the mass by dividing force, generated by two springs inside the SLAMMD drawer, by acceleration measured with a precise optical instrument that detects the position versus time trajectory of the SLAMMD guide arm and a micro controller which collects the raw data and provides the precise timing. The final computation is done via portable laptop computer with SLAMMD unique software. To calculate their mass, crewmembers wrap their legs around a leg support assembly, align the stomach against a belly pad and either rest the head or chin on a head rest. For calibration, an 18 lbs mass is used at different lengths from the pivot point, to simulate different mass values. Crew mass range is from 90 to 240 lbs.]
SPDM Checkout Activities:
Today's operations have stopped. Robotics ground controllers have been operating the SPDM (Special Purpose Dexterous Manipulator) "Dextre" through a functionality & robotic maintenance demonstration program of grasping, unbolting, extracting, reseating & installing an RPCM (P11A). Yesterday's (Day 2) extraction step jammed the RPCM in its soft dock position due to an underestimated pulling force applied by metal spring finger gaskets used for EMI (Electromagnetic Interference) shielding (34 lbf instead of expected 20 lbf). A plan has been proposed to reattempt the operations later with and without FMA (Force/Moment Accommodation) or line tracking enabled. [Russian thrusters are disabled during SPDM operations.] The test extraction may be reattempted tomorrow (22/07), but a new date for the RPCM replacement has not been set.
---------- Post added 22nd Jul 2010 at 12:12 AM ---------- Previous post was 21st Jul 2010 at 11:03 PM ----------
Shannon Walker's 3rd Blog Post: "After two alarms, finally, I take a flight around the space station".
FE-2 Tracy Caldwell-Dyson had several hours to perform Day 2 activities of repairing the USOS OGS (Oxygen Generation System) which performed an unexpected "Fast Shutdown" on 05/07, probably due to blockage in several cells within the H2 (Hydrogen) Dome ORU (Orbit Replacement Unit). [Yesterday's Day 1 activities were delayed by an RPCM (Remote Power Controller Module) trip. Today, Tracy started off with a set-up activity to prepare for the OGS forward flush. After the ground completed this flush, Tracy configured for the reverse flush which was increased in duration due to the lower than expected flow rate. After the reverse flush was complete, Tracy was to put everything in a good overnight configuration. The H2 Dome R&R (Removal & Replacement) activities planned for today were moved to FE-6 Shannon Walker's timeline tomorrow (22/07). This should get OGS ready for activation, which will be attempted with the spare Pump ORU installed, but a second Pump ORU R&R was to be conducted if the reverse flush has not recovered the spare Pump.]
FE-3 Mikhail Kornienko & FE-5 Fyodor Yurchikhin continued their preparations for Russian EVA-25 in the Orlan spacesuits on 26/07 and the suited training exercise on 23/07, performing further Orlan spacesuit activities in DC-1 (Docking Compartment-1) "Pirs".
After configuring the DC-1 STTS communications link to support their presence, Mikhail & Fyodor:
• Readied Orlan spacesuit replaceable elements & equipment (SMEG).
• Installed the BNP portable repress O2 (Oxygen) tank in the SM (Service Module) RO (Working Compartment).
• Completed individual fit sizing (central strap, lateral strap, hip strap, calf strap, arm cable and shoulder size, front & rear) on their Orlan-MK spacesuits.
• Ran leak checks & valve functionality tests on the Orlans and their BSS interface units in the DC-1 & SM PkhO (Transfer Compartment) from the EVA support panels (POV).
• Conducted pressure checks on the SM BK-3 O2 tanks and the BNP portable repress O2 tank in DC-1.
• Restored DC-1 STTS communications to nominal settings.
Yurchikhin installed the second set of 825M3 Orlan batteries in the battery chargers and initiated the charging.
CDR Alexander Skvortsov readied Progress M-05M/37P, docked at DC-1 Nadir, for undocking if required in a Russian EVA-25 contingency. Steps included:
• Installing the docking probe (StM, Stykovochnovo mekhanizma) on Progress' hatch.
• Activating Progress’ electronics and taking out the ventilation/heating air duct.
• Closing the hatches.
• Removing the QD (Quick Disconnect) screw clamps (BZV) of the docking & internal transfer mechanism (SSVP) which rigidized the joint,
• Starting the standard one-hour leak checking of the SU docking vestibule and fuel/oxidizer transfer line interface between Progress and DC-1.
• Downlinking Sasha's formal report on loading completion and the video depicting the close-out activities, for review by ground specialists. [During hatch closure, leak checking and initial clamp installation, Russian thrusters were inhibited due to load constraints from ~10:20 AM to 12:00 PM GMT.]
After deconfiguring the CEVIS (Cycle Ergometer with Vibration Isolation System) in the Lab to make room, Shannon performed Part 4 of WORF (Window Observational Research Facility) outfitting. CEVIS was later re-installed. [This was the final outfitting activity for WORF until it is handed over to the Payloads community for use. During today's task Shannon configured/adjusted the Bumpshield, Shutter Actuator Mechanism (SAM) and Air Knife for nominal operations, performed photo documentation, installed the WORF hatch and completed final closeouts. Background: WORF, which surrounds the 20 inch Lab science window, serves for attaching sensors (cameras, multispectral scanners, and other instruments). It provides attachment points and power & data transfer capability for instruments to be mounted in the window. Multiple instruments can be mounted at the same time. The rack is designed to allow rapid changes of equipment by the crew. WORF has a bracket for small cameras such as 35mm, 70mm and camcorders. Larger payloads requiring nonstandard attachment or additional instrument isolation must supply their own brackets or platforms which mount to the WORF using available attachment points. WORF also provides protection for the interior of the Lab window and can control stray light exchange between the Lab interior and the external station environment.]
In the US "Quest" A/L (Airlock), FE-4 Doug Wheelock terminated the recharge of the first batch of EVA batteries in the BSA (Battery Stowage Assembly) and initiated the second round.
Also in the A/L, Doug conducted the standard one-hour scrub of EMUs (Extravehicular Mobility Units) #3005 & #3009 cooling loops with their SCUs (Service & Cooling Umbilicals), filtering ionic & particulate matter (via a 3-micron filter), then reconfigured the cooling loops and started the ~2 hour biocide filtering. The activity included leak checking on the loops, with remedial actions to be taken if required. [Loop scrubbing, incl. iodination of the LCVGs (Liquid Cooling & Ventilation Garments) for biocidal maintenance is done to eliminate any biomass and particulate matter that may have accumulated in the loops.]
Additionally, Doug performed an inspection of the EVA BRTs (Body Restraint Tethers) to be used in US EVA-15.
SLAMMD Postponement:
Today's body mass measurement activities of Tracy Caldwell-Dyson, Doug Wheelock & Shannon Walker with the SLAMMD (Space Linear Acceleration Mass Measurement Device) BMM (Bode Mass Measurement) equipment were postponed due to a missing deceleration pad (of two required). [Background: SLAMMD, performed first on Expedition 12 in December 2005, provides an accurate means of determining the on-orbit mass of humans spanning the range from the 5th percentile Japanese female to the 95th percentile American male. The procedure, in accordance with Newton's 2nd Law of Motion, finds the mass by dividing force, generated by two springs inside the SLAMMD drawer, by acceleration measured with a precise optical instrument that detects the position versus time trajectory of the SLAMMD guide arm and a micro controller which collects the raw data and provides the precise timing. The final computation is done via portable laptop computer with SLAMMD unique software. To calculate their mass, crewmembers wrap their legs around a leg support assembly, align the stomach against a belly pad and either rest the head or chin on a head rest. For calibration, an 18 lbs mass is used at different lengths from the pivot point, to simulate different mass values. Crew mass range is from 90 to 240 lbs.]
SPDM Checkout Activities:
Today's operations have stopped. Robotics ground controllers have been operating the SPDM (Special Purpose Dexterous Manipulator) "Dextre" through a functionality & robotic maintenance demonstration program of grasping, unbolting, extracting, reseating & installing an RPCM (P11A). Yesterday's (Day 2) extraction step jammed the RPCM in its soft dock position due to an underestimated pulling force applied by metal spring finger gaskets used for EMI (Electromagnetic Interference) shielding (34 lbf instead of expected 20 lbf). A plan has been proposed to reattempt the operations later with and without FMA (Force/Moment Accommodation) or line tracking enabled. [Russian thrusters are disabled during SPDM operations.] The test extraction may be reattempted tomorrow (22/07), but a new date for the RPCM replacement has not been set.
---------- Post added 22nd Jul 2010 at 12:12 AM ---------- Previous post was 21st Jul 2010 at 11:03 PM ----------
Shannon Walker's 3rd Blog Post: "After two alarms, finally, I take a flight around the space station".
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