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Orbinaut Pete
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From ISS On-Orbit Status Report for 06/01/2011.
After enabling the Cupola RWS (Robotic Workstation) UOP (Utility Outlet Panel) for power-up in Node 3, CDR Scott Kelly installed the CCR (Cupola Crew Restraint) and checked out both Lab & Cupola RWSs as part of the subsequent regular SSRMS (Space Station Remote Manipulator System) prelaunch checkout.
Scott, FE-6 Cady Coleman & FE-5 Paolo Nespoli then reviewed the new POC (Portable Onboard Computer) DOUG (Dynamic Onboard Ubiquitous Graphics) software for upcoming SSRMS ops and the necessary setup of DOUG to receive telemetry from the SSRMS during the ops.
Afterwards, the three crewmembers had another 30 minute session with the SSRMS to hone their proficiency, taking the SSRMS through a practice maneuver (misaligned grapple approach) in preparation for HTV-2 approach & berthing. Cady then disabled the CUP UOP, and Scott removed the CCR.
Scott performed two troubleshooting activities on ARED (Advanced Resistive Exercise Device). [First, collecting some data points to help determine the root cause why the ARED detents are not engaging. Second, rotating the detent plate 180 degrees so that the detent balls stop gouging out the same spot on the plate.]
After enabling the Cupola RWS (Robotic Workstation) UOP (Utility Outlet Panel) for power-up in Node 3, CDR Scott Kelly installed the CCR (Cupola Crew Restraint) and checked out both Lab & Cupola RWSs as part of the subsequent regular SSRMS (Space Station Remote Manipulator System) prelaunch checkout.
Scott, FE-6 Cady Coleman & FE-5 Paolo Nespoli then reviewed the new POC (Portable Onboard Computer) DOUG (Dynamic Onboard Ubiquitous Graphics) software for upcoming SSRMS ops and the necessary setup of DOUG to receive telemetry from the SSRMS during the ops.
Afterwards, the three crewmembers had another 30 minute session with the SSRMS to hone their proficiency, taking the SSRMS through a practice maneuver (misaligned grapple approach) in preparation for HTV-2 approach & berthing. Cady then disabled the CUP UOP, and Scott removed the CCR.
Scott performed two troubleshooting activities on ARED (Advanced Resistive Exercise Device). [First, collecting some data points to help determine the root cause why the ARED detents are not engaging. Second, rotating the detent plate 180 degrees so that the detent balls stop gouging out the same spot on the plate.]
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NASA:
Space Station Astronauts To Connect With Central Florida Students
WASHINGTON -- International Space Station residents Scott Kelly, Cady Coleman and Paolo Nespoli will speak on Tuesday, Jan. 11, to 150 students from Kathleen High School's Central Florida Aerospace Academy (CFAA) in Lakeland, Fla.
The CFAA prepares students to go into advanced aerospace education or the aerospace industry. In 2009, the academy received an agency grant to develop a NASA-based science, technology, engineering and mathematics, or STEM, curriculum.
The station astronauts will answer student questions on Jan. 11, from 11-11:20 a.m. EST. In preparation for the conversation with astronauts in space, the students have been participating in science activities, exploring careers in science with local scientists and engineers, studying a floor plan of the International Space Station and learning about experiments in microgravity.
The event will air live on NASA Television and on the agency's website. Media interested in attending this event should contact Obie Young at 407-341-3072 by 2 p.m. Monday, Jan. 10.
The live downlink will be shared with other students through the Florida Aviation Network, the Federal Aviation Administration Training Network and the Government Educational Training Network. This will give approximately 93,000 students in Polk County's K-12 classrooms the opportunity to watch the event.
NASA astronauts Kelly and Coleman and Nespoli of the European Space Agency are conducting science experiments aboard the space station. Kelly serves as the Expedition 26 commander until March when he returns home. Coleman and Nespoli will complete their station mission in May.
This live, in-flight education downlink is one in a series with educational organizations in the U.S. and abroad to improve teaching and learning in STEM subjects. It is an integral component of Teaching From Space, a NASA education program. Teaching From Space promotes learning opportunities and builds partnerships with the education community using the unique environment of space and NASA's human spaceflight program.
{...}
Space Station Astronauts To Connect With Central Florida Students
WASHINGTON -- International Space Station residents Scott Kelly, Cady Coleman and Paolo Nespoli will speak on Tuesday, Jan. 11, to 150 students from Kathleen High School's Central Florida Aerospace Academy (CFAA) in Lakeland, Fla.
The CFAA prepares students to go into advanced aerospace education or the aerospace industry. In 2009, the academy received an agency grant to develop a NASA-based science, technology, engineering and mathematics, or STEM, curriculum.
The station astronauts will answer student questions on Jan. 11, from 11-11:20 a.m. EST. In preparation for the conversation with astronauts in space, the students have been participating in science activities, exploring careers in science with local scientists and engineers, studying a floor plan of the International Space Station and learning about experiments in microgravity.
The event will air live on NASA Television and on the agency's website. Media interested in attending this event should contact Obie Young at 407-341-3072 by 2 p.m. Monday, Jan. 10.
The live downlink will be shared with other students through the Florida Aviation Network, the Federal Aviation Administration Training Network and the Government Educational Training Network. This will give approximately 93,000 students in Polk County's K-12 classrooms the opportunity to watch the event.
NASA astronauts Kelly and Coleman and Nespoli of the European Space Agency are conducting science experiments aboard the space station. Kelly serves as the Expedition 26 commander until March when he returns home. Coleman and Nespoli will complete their station mission in May.
This live, in-flight education downlink is one in a series with educational organizations in the U.S. and abroad to improve teaching and learning in STEM subjects. It is an integral component of Teaching From Space, a NASA education program. Teaching From Space promotes learning opportunities and builds partnerships with the education community using the unique environment of space and NASA's human spaceflight program.
{...}
Orbinaut Pete
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Per the updated SpaceX launch manifest, the following COTS (Commercial Orbital Transportation Services) and CRS (Commercial Resupply Services) flights are planned for Dragon prior to 2015:
2011:
2x COTS demo flights*.
2x CRS flights to ISS.
2012:
2x CRS flights to ISS.
2013:
3x CRS flights to ISS.
2014:
3x CRS flights to ISS.
2015:
2x CRS flights to ISS.
*= Only one flight would actually berth to the ISS. However, these two flights could be merged into one flight, which would berth to the ISS.
2011:
2x COTS demo flights*.
2x CRS flights to ISS.
2012:
2x CRS flights to ISS.
2013:
3x CRS flights to ISS.
2014:
3x CRS flights to ISS.
2015:
2x CRS flights to ISS.
*= Only one flight would actually berth to the ISS. However, these two flights could be merged into one flight, which would berth to the ISS.
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From ISS On-Orbit Status Report for 07/01/2011.
In support of the on-going ground-controlled Node 3 MDM (Multiplexer/Demultiplexer) computer software upgrade, CDR Scott Kelly closed the Cupola window shutters.
The MDM transition also required Scott to deactivate the WHC (Waste & Hygiene Compartment) rack temporarily (~35 minutes) due to loss of insight to the WHC avionics fan during the N3-2 MDM software upgrade. The ground also deactivated the OGS (Oxygen Generation System) rack and re-set the ECLSS (Environment Control & Life Support Systems).
Preparatory to the ground's OGS deactivation, Scott accessed the OGS rack and then performed hydrogen purging with the HOPA (Hydrogen sensor ORU Purge Adapter).
Shortly before bedtime, Scott will also turn off the MSG (Microgravity Science Glovebox).
MDM R3 Software Transition:
MCC-Houston is transitioning four MDM computers to new versions of software. The two S0 Truss MDMs are being transitioned to the S0-1 & S0-2 R3 version, the N3-1 MDM to N3Sys1 R3 and the N3-2 MDM to N3Sys2 R4. During the transitions, which have some unavoidable but temporary impacts, the crew is supporting as needed.
In support of the on-going ground-controlled Node 3 MDM (Multiplexer/Demultiplexer) computer software upgrade, CDR Scott Kelly closed the Cupola window shutters.
The MDM transition also required Scott to deactivate the WHC (Waste & Hygiene Compartment) rack temporarily (~35 minutes) due to loss of insight to the WHC avionics fan during the N3-2 MDM software upgrade. The ground also deactivated the OGS (Oxygen Generation System) rack and re-set the ECLSS (Environment Control & Life Support Systems).
Preparatory to the ground's OGS deactivation, Scott accessed the OGS rack and then performed hydrogen purging with the HOPA (Hydrogen sensor ORU Purge Adapter).
Shortly before bedtime, Scott will also turn off the MSG (Microgravity Science Glovebox).
MDM R3 Software Transition:
MCC-Houston is transitioning four MDM computers to new versions of software. The two S0 Truss MDMs are being transitioned to the S0-1 & S0-2 R3 version, the N3-1 MDM to N3Sys1 R3 and the N3-2 MDM to N3Sys2 R4. During the transitions, which have some unavoidable but temporary impacts, the crew is supporting as needed.
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SPACE.com: "Christmas Comes Twice for Russians in Space".
Merry Orthodox Christmas to all out Russian Orbinauts! :thumbup:
Merry Orthodox Christmas to all out Russian Orbinauts! :thumbup:
Orbinaut Pete
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From ISS On-Orbit Status Report for 08/01/2011.
T2 Issue:
FE-6 Cady Coleman ran a special ACO (Activation & Checkout) protocol that was created specifically to test the T2 system to try and see how bad the bumping from misaligned snubber pins may get. Since some of the T2 snubber pins are misaligned within their respective snubber cups, there was a concern that T2 is not centered properly which can cause bumping within the rack, leading to hardware damage. The protocol included different speed changes when compared to Cady's normal protocol.
T2 Issue:
FE-6 Cady Coleman ran a special ACO (Activation & Checkout) protocol that was created specifically to test the T2 system to try and see how bad the bumping from misaligned snubber pins may get. Since some of the T2 snubber pins are misaligned within their respective snubber cups, there was a concern that T2 is not centered properly which can cause bumping within the rack, leading to hardware damage. The protocol included different speed changes when compared to Cady's normal protocol.
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From ISS On-Orbit Status Report for 10/01/2011.
>>>Americans observed a National Moment of Silence at 3:00 PM GMT in honor of the victims of the Tucson, AZ shooting last Saturday, which included Congresswoman Gabrielle Giffords, spouse of STS-134 Commander Mark Kelly, twin brother of ISS Commander Scott Kelly. NASA, one more family hit by this tragedy, stood together in deep sadness along with the crew of the ISS.<<<
In the JPM (JEM Pressurized Module), FE-5 Paolo Nespoli unstowed and configured necessary hardware for the HTV-2 (H-II Transfer Vehicle-2) arrival & berthing, assembling the HCP (Hardware Command Panel) and a number of lines for building the HCP power/data cabling. Spare HCP cables were consolidated.
Later, Paolo toggle-tested the PROX (Proximity Communication System) Rack power switches in support of a subsequent 5 hour ground-commanded activity of powering on PROX ORUs (Orbital Replacement Units) in the ICS (Inter-orbit Communication System) Rack and setting their parameters from the ground for the "PROX 3 GPS" data path.
Afterwards, CDR Scott Kelly, FE-6 Cady Coleman & Paolo spent ~1.5 hours with OBT (Onboard Training) material on HTV rendezvous approach procedures.
FE-1 Alexander Kaleri conducted an equipment search for the ATV (Automated Transfer Vehicle) PCE (Proximity Communication Equipment; Russian: MBRL) hardware and assembled hardware behind SM panels 226 & 227. [MBRL will be used for the approach & docking of the European ATV-2 "Johannes Kepler", currently planned to be launched 15/02/2011. The PCE system was assembled and checked out by ESA/TsUP last October, to verify proper operation of the PCE WAL3 (Low Gain) and WAS2 (Medium Gain) antennas as well as the PCE equipment internal to the SM. The WAL3 & WAS2 antennas are prime for ATV Rendezvous operations. As part of the October checkout, the PCE equipment was activated, directed to perform a self-test and switched to CW (Carrier Wave) mode. After an attitude maneuver that maximized coverage for the antenna(s) being tested, the PCE transmitted a beacon signal to ESA's Maspalomas (MAS) and Villafranca (VIL) Ground Stations. The ground stations tracked the ISS, checked that the CW signal was received, verified the proper RF (Radio Frequency) power level, and recorded the evolution of the RF power level over time. For the duration of the maneuvers, Lab, JPM and Cupola windows were shuttered and the SARJ (Solar Alpha Rotary Joint) was feathered (arrays facing Russian thrusters edge-on).]
>>>Americans observed a National Moment of Silence at 3:00 PM GMT in honor of the victims of the Tucson, AZ shooting last Saturday, which included Congresswoman Gabrielle Giffords, spouse of STS-134 Commander Mark Kelly, twin brother of ISS Commander Scott Kelly. NASA, one more family hit by this tragedy, stood together in deep sadness along with the crew of the ISS.<<<
In the JPM (JEM Pressurized Module), FE-5 Paolo Nespoli unstowed and configured necessary hardware for the HTV-2 (H-II Transfer Vehicle-2) arrival & berthing, assembling the HCP (Hardware Command Panel) and a number of lines for building the HCP power/data cabling. Spare HCP cables were consolidated.
Later, Paolo toggle-tested the PROX (Proximity Communication System) Rack power switches in support of a subsequent 5 hour ground-commanded activity of powering on PROX ORUs (Orbital Replacement Units) in the ICS (Inter-orbit Communication System) Rack and setting their parameters from the ground for the "PROX 3 GPS" data path.
Afterwards, CDR Scott Kelly, FE-6 Cady Coleman & Paolo spent ~1.5 hours with OBT (Onboard Training) material on HTV rendezvous approach procedures.
FE-1 Alexander Kaleri conducted an equipment search for the ATV (Automated Transfer Vehicle) PCE (Proximity Communication Equipment; Russian: MBRL) hardware and assembled hardware behind SM panels 226 & 227. [MBRL will be used for the approach & docking of the European ATV-2 "Johannes Kepler", currently planned to be launched 15/02/2011. The PCE system was assembled and checked out by ESA/TsUP last October, to verify proper operation of the PCE WAL3 (Low Gain) and WAS2 (Medium Gain) antennas as well as the PCE equipment internal to the SM. The WAL3 & WAS2 antennas are prime for ATV Rendezvous operations. As part of the October checkout, the PCE equipment was activated, directed to perform a self-test and switched to CW (Carrier Wave) mode. After an attitude maneuver that maximized coverage for the antenna(s) being tested, the PCE transmitted a beacon signal to ESA's Maspalomas (MAS) and Villafranca (VIL) Ground Stations. The ground stations tracked the ISS, checked that the CW signal was received, verified the proper RF (Radio Frequency) power level, and recorded the evolution of the RF power level over time. For the duration of the maneuvers, Lab, JPM and Cupola windows were shuttered and the SARJ (Solar Alpha Rotary Joint) was feathered (arrays facing Russian thrusters edge-on).]
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Ask a question to Paolo Nespoli aboard the ISS via the BBC!
BBC News: "Live in space: Ask the astronaut".
BBC News: "Live in space: Ask the astronaut".
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NASA TV Video: Russian Prime Minister Calls the Station Crew at Start of Historic Year.
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Roscosmos PAO: "Shuttle Launch Delay may Impact ISS Cargo Delivery Flow".
Roscosmos is not in position to update its ISS launch schedule so far, Roscosmos Head Anatoly Perminov said quoted by Interfax.
According to him, Discovery launch delay will not affect the flights of Russian space vehicles to the International Space Station. However, there might be some problems with the cargo to be delivered by the shuttle.
Roscosmos Head is concerned with the status of Discovery and the technical problems with the shuttle. On the other hand, no additional Progress or Soyuz missions are planned by Russia this year.
Roscosmos is not in position to update its ISS launch schedule so far, Roscosmos Head Anatoly Perminov said quoted by Interfax.
According to him, Discovery launch delay will not affect the flights of Russian space vehicles to the International Space Station. However, there might be some problems with the cargo to be delivered by the shuttle.
Roscosmos Head is concerned with the status of Discovery and the technical problems with the shuttle. On the other hand, no additional Progress or Soyuz missions are planned by Russia this year.
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Roscosmos PAO: "Yury Gagarin Space Vehicle to Leave for ISS on March 30".
The Soyuz spacecraft which is to fly to the International Space Station on March 30 will be named after the first man in space Yury Gagarin, head of the Russian Space Agency Anatoly Perminov said Tuesday when meeting Prime Minister Vladimir Putin.
This year many different events will be held marking the 50th anniversary of the first space flight, The Voice of Russia informs.
The Russian Space Agency has invited heads of 49 space agencies, as well astronauts, who took part in space expeditions on Soviet and Russian spacecraft, to attend the celebration in Moscow on April 12.
The Soyuz spacecraft which is to fly to the International Space Station on March 30 will be named after the first man in space Yury Gagarin, head of the Russian Space Agency Anatoly Perminov said Tuesday when meeting Prime Minister Vladimir Putin.
This year many different events will be held marking the 50th anniversary of the first space flight, The Voice of Russia informs.
The Russian Space Agency has invited heads of 49 space agencies, as well astronauts, who took part in space expeditions on Soviet and Russian spacecraft, to attend the celebration in Moscow on April 12.
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From ISS On-Orbit Status Report for 11/01/2011.
In the JPM (JEM Pressurized Module), FE-5 Paolo Nespoli continued his boardside support of the on-going ground-controlled HTV (H-II Transfer Vehicle) HCP (Hardware Command Panel) checkout activities. [Steps included running an HCP selfcheck and monitoring the ground testing the HCP for PROX (Proximity Operations) Baseband function, PROX GPSR data status and reception of the HCP-sent command at the ground HTV simulator in Tsukuba/Japan.]
Working several hours of outfitting in the SM (Service Module), FE-1 Alexander Kaleri installed ATV (Automated Transfer Vehicle) PCE (Proximity Communications Equipment; Russian: MBRL) hardware (which he had taken out on 05/11/10). [Specifically, Sasha laid out the associated BKS cabling and installed the PCE Z0000 prox comm box and BUAP antenna switching control box.
As part of HTV-2 Rendezvous Approach OBT (Onboard Training), CDR Scott Kelly, FE-6 Cady Coleman & Paolo conducted an audio teleconference with ground specialists at ~12:40 PM GMT.
FE-2 Oleg Skripochka & FE-4 Dmitri Kondratyev spent another ~3 hours 50 minutes on preparations for their Russian EVA-27 on 21/01 and preceding Orlan dry-run, today preparing equipment, studying external Working Zones (WZs) and off-limit areas, and configuring the SM (Service Module) PkhO (Transfer Compartment) and DC-1 (Docking Compartment-1) for the EVA.
Cady enabled power to the Cupola RWS (Robotics Workstation), and then she and Paolo trained for about an hour setting up the DOUG (Dynamic Onboard Ubiquitous Graphics) and taking the SSRMS (Space Station Remote Manipulator System) through another practice maneuver (misaligned grapple approach) in preparation for HTV-2. Afterwards, Cady disabled the Cupola UOP (Utility Outlet Panel).
In the JPM (JEM Pressurized Module), FE-5 Paolo Nespoli continued his boardside support of the on-going ground-controlled HTV (H-II Transfer Vehicle) HCP (Hardware Command Panel) checkout activities. [Steps included running an HCP selfcheck and monitoring the ground testing the HCP for PROX (Proximity Operations) Baseband function, PROX GPSR data status and reception of the HCP-sent command at the ground HTV simulator in Tsukuba/Japan.]
Working several hours of outfitting in the SM (Service Module), FE-1 Alexander Kaleri installed ATV (Automated Transfer Vehicle) PCE (Proximity Communications Equipment; Russian: MBRL) hardware (which he had taken out on 05/11/10). [Specifically, Sasha laid out the associated BKS cabling and installed the PCE Z0000 prox comm box and BUAP antenna switching control box.
As part of HTV-2 Rendezvous Approach OBT (Onboard Training), CDR Scott Kelly, FE-6 Cady Coleman & Paolo conducted an audio teleconference with ground specialists at ~12:40 PM GMT.
FE-2 Oleg Skripochka & FE-4 Dmitri Kondratyev spent another ~3 hours 50 minutes on preparations for their Russian EVA-27 on 21/01 and preceding Orlan dry-run, today preparing equipment, studying external Working Zones (WZs) and off-limit areas, and configuring the SM (Service Module) PkhO (Transfer Compartment) and DC-1 (Docking Compartment-1) for the EVA.
Cady enabled power to the Cupola RWS (Robotics Workstation), and then she and Paolo trained for about an hour setting up the DOUG (Dynamic Onboard Ubiquitous Graphics) and taking the SSRMS (Space Station Remote Manipulator System) through another practice maneuver (misaligned grapple approach) in preparation for HTV-2. Afterwards, Cady disabled the Cupola UOP (Utility Outlet Panel).
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Photos of Dmitry Kondratiev taken today from continuing preparations for the planned spacewalk scheduled on Jan. 21, 2010. Dmitry Kondratiev along with Oleg Skripochka will spend then about 6 hours working on the outer side of the Russian segment of the ISS.
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RSC Energia: Earth Artificial Satellite (EAS) to be launched to ISS on Progress M-09M.
At a period of December 25 - 31, 2010 the integrated tests of Earth Artificial Satellite (EAS) Kedr were conducted at S.P. Korolev Rocket & Space Corporation Energia, then it was delivered to the Baikonur cosmodrome. EAS mass is 30 kg, its dimensions are the following 550 х 550 х 400 mm.
It is planned to provide EAS launch from board the International Space Station (ISS) during the extravehicular activity (EVA) of the Russian cosmonauts.
The satellite delivery to the ISS is planned to be provided by Progress M-09М cargo transport vehicle.
EAS will transmit 25 messages of greeting in 15 languages Earth photos and scientific equipment and service systems telemetry information. Its flight control will be provided by the Corporation radio amateur station
The satellite name was adopted by Yu.A. Gagarin call sign in his historical flight, namely Kedr. The signal transmission from board the Earth artificial satellite will be provided at a radio amateur frequency of 145.95 MHz. EAS has radio amateur call sign RS1S.
For reference:
At a period of December 25 - 31, 2010 the integrated tests of Earth Artificial Satellite (EAS) Kedr were conducted at S.P. Korolev Rocket & Space Corporation Energia, then it was delivered to the Baikonur cosmodrome. EAS mass is 30 kg, its dimensions are the following 550 х 550 х 400 mm.
It is planned to provide EAS launch from board the International Space Station (ISS) during the extravehicular activity (EVA) of the Russian cosmonauts.
The satellite delivery to the ISS is planned to be provided by Progress M-09М cargo transport vehicle.
EAS will transmit 25 messages of greeting in 15 languages Earth photos and scientific equipment and service systems telemetry information. Its flight control will be provided by the Corporation radio amateur station
The satellite name was adopted by Yu.A. Gagarin call sign in his historical flight, namely Kedr. The signal transmission from board the Earth artificial satellite will be provided at a radio amateur frequency of 145.95 MHz. EAS has radio amateur call sign RS1S.
For reference:
- EAS is designed to perform space experiment (SE) RadioSkaf: Development, processing and launch of supersmall spacecraft during EVA. The experiment investigator is S.P. Korolev RSC Energia.
- SE RadioSkaf is carried out in the scope of the students' program for space education of the young people of Russia and foreign countries. It is the first in the implementation of the integrated program for the development and operation of minisatellites, a class of small spacecraft of the mass up to 100 kg.
The first phase of SE RadioSkaf was successfully performed in honor of the 175-th anniversary of N.E. Bauman MGTU and the 75-th anniversary of S. Ordzhonikidze MAI in February 2006.
The second phase of SE RadioSkaf using EAS Kedr - RADIOSKAF-B is devoted to the 50-th anniversary of the first man-in-space flight. - SE RadioSkaf scientific adviser is pilot-cosmonaut A.P. Alexandrov, Adviser to the RSC Energia President, technical leader is S.N. Samburov, chief specialist of RSC Energia.
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Roscosmos PAO: "About Upcoming ISS Reboost".
In accordance with the International Space Station mission ballistics support program, ISS reboost is scheduled for Jan. 13.
The maneuver is to be assisted by 8 attitude thrusters of the Progress M-07M cargo vehicle attached to the Zvezda instrumentation compartment. The engines will be started at 12:00 Moscow time (09:00 GMT). Estimated value of the burn is 1.4 mps. After the burn, which is to last 672.5 sec, the altitude of the station shall become 2.5km higher, or to achieve 353,3 km.
The operation is aimed at providing favorable conditions for further landing of Soyuz TMA-M crew vehicle scheduled for March 16.
In accordance with the International Space Station mission ballistics support program, ISS reboost is scheduled for Jan. 13.
The maneuver is to be assisted by 8 attitude thrusters of the Progress M-07M cargo vehicle attached to the Zvezda instrumentation compartment. The engines will be started at 12:00 Moscow time (09:00 GMT). Estimated value of the burn is 1.4 mps. After the burn, which is to last 672.5 sec, the altitude of the station shall become 2.5km higher, or to achieve 353,3 km.
The operation is aimed at providing favorable conditions for further landing of Soyuz TMA-M crew vehicle scheduled for March 16.
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