Author Topic: Expedition 20 thread (May 29 - October 11, 2009)  (Read 123609 times)

Offline Ronsmytheiii

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Re: Expedition 20 thread
« Reply #140 on: 07/02/2009 09:53 pm »
« Last Edit: 07/02/2009 09:53 pm by Ronsmytheiii »

Offline Ronsmytheiii

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Re: Expedition 20 thread
« Reply #141 on: 07/02/2009 09:54 pm »
« Last Edit: 07/02/2009 09:54 pm by Ronsmytheiii »

Offline Ronsmytheiii

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Re: Expedition 20 thread
« Reply #142 on: 07/02/2009 09:56 pm »
docking confirmed!

Offline saturnapollo

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Re: Expedition 20 thread
« Reply #143 on: 07/02/2009 09:59 pm »
Nice screen grabs! I missed it.

Ah, if only they would take nice photos during these relocations  :)

Keith

Offline aquarius

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Re: Expedition 20 thread
« Reply #144 on: 07/02/2009 10:13 pm »
Why was this relocation needed?
I mean, why canīt Progress M-67 dock to Pirs?

Thanks.

Offline Jorge

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Re: Expedition 20 thread
« Reply #145 on: 07/02/2009 10:38 pm »
Why was this relocation needed?
I mean, why canīt Progress M-67 dock to Pirs?

Docking Progress to Zvezda aft is better for reboost.
JRF

Offline John44

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Re: Expedition 20 thread
« Reply #146 on: 07/02/2009 10:39 pm »

Offline scott6428

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Re: Expedition 20 thread
« Reply #147 on: 07/03/2009 02:45 am »
Why was this relocation needed?
I mean, why canīt Progress M-67 dock to Pirs?

Docking Progress to Zvezda aft is better for reboost.

So why not dock the progress there in the first place?  I'm sure there's a good reason I just don't know what it is

Offline robertross

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Re: Expedition 20 thread
« Reply #148 on: 07/03/2009 08:45 pm »
Thanks for the screenshots Ron!

Offline Jorge

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Re: Expedition 20 thread
« Reply #149 on: 07/03/2009 08:55 pm »
Why was this relocation needed?
I mean, why canīt Progress M-67 dock to Pirs?

Docking Progress to Zvezda aft is better for reboost.

So why not dock the progress there in the first place?  I'm sure there's a good reason I just don't know what it is

Just what do you mean? The Progress *is* being docked there in the first place. But first, the Soyuz previously docked there had to be relocated to Pirs.
JRF

Offline scott6428

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Re: Expedition 20 thread
« Reply #150 on: 07/06/2009 01:20 pm »
Why was this relocation needed?
I mean, why canīt Progress M-67 dock to Pirs?

Docking Progress to Zvezda aft is better for reboost.

So why not dock the progress there in the first place?  I'm sure there's a good reason I just don't know what it is

Just what do you mean? The Progress *is* being docked there in the first place. But first, the Soyuz previously docked there had to be relocated to Pirs.

Sorry for being vague but what I was thinking was, why is the soyuz in a port you'd rather have the progress in?  Why doesn't the soyuz dock else where on arrival eliminating the need for a re-docking flight?

Offline rdale

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Re: Expedition 20 thread
« Reply #151 on: 07/06/2009 01:21 pm »

COL ppO2 Sensor: Due to increased differences to MCA (Major Constituents Analyzer) measurements, the ppO2 (oxygen partial pressure) sensor in the Columbus laboratory is no longer considered reliable and is not being used anymore. The backup ppO2 sensor is still in range with the reference and gives good readings of the oxygen situation in COL.

Offline marshallsplace

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Re: Expedition 20 thread
« Reply #152 on: 07/07/2009 08:23 am »

GIVUS Failure: The GIVUS (Guidance Navigation & Control, GN&C) in the RS has failed. GIVUS is used for rate and attitude determination. TsUP-Moscow Motion Control System (MCS) specialists are still reviewing data but suspect that GIVUS is now hard failed. A spare GIVUS will be brought up on Progress 34P, scheduled for launch on 7/24. Meanwhile, the ORT backup up rate sensor has been powered up for determining station attitude, with the U.S. RGA-1 (Rate Gyro Assembly 1) used for attitude determination data as prime, and MCC-Houston has enabled the degraded RGA-2 as a backup to RGA 1. (Note: RGA-2 has a limited life due to one of its three laser gyros being degraded. The RGA 2 condition has been assessed and determined that it may not respond when attempted to be operated at cold condition in certain beta regimes.)

Offline Solar_OPS

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Re: Expedition 20 thread
« Reply #153 on: 07/07/2009 10:46 am »
Why was this relocation needed?
I mean, why canīt Progress M-67 dock to Pirs?

Docking Progress to Zvezda aft is better for reboost.

So why not dock the progress there in the first place?  I'm sure there's a good reason I just don't know what it is

Just what do you mean? The Progress *is* being docked there in the first place. But first, the Soyuz previously docked there had to be relocated to Pirs.

Sorry for being vague but what I was thinking was, why is the soyuz in a port you'd rather have the progress in?  Why doesn't the soyuz dock else where on arrival eliminating the need for a re-docking flight?

There are two competing requirements:
1. Progress at SM aft port for reboosts;
2. Progress at DC nadir port for Russian EVA's. If you have a Soyuz there, one cosmonaut has to be sitting inside the Soyuz while the EVA is going on (a Russian EVA cuts off the spacecraft docked at the DC from the rest of the station)

Anyways, there are currently only 3 available docking ports with 2 soyuz'es to be docked permanently for the 6 crew, making the equation quite complicated, with needs for relocation from time to time. The arrival of MRM-2 later this fall should make it easier, adding a fourth docking port to the complex.
Greetz,

Denis

Online jacqmans

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Re: Expedition 20 thread
« Reply #154 on: 07/07/2009 01:50 pm »
Honorary Degree in Space

 

Longueuil, Quebec, July 6, 2009– On July 8, the Canadian Space Agency astronaut Robert Thirsk will become the first person ever to receive an Honorary degree in space. University of Calgary Chancellor, Joanne Cuthbertson will bestow the precious diploma via downlink between the International Space Station and the University. Media representatives are invited to witness this world premier.

 

Time of event may change without advance notice. Please call the CSA Media Relations Office to confirm the most up-to-date details.

 

Journalists who cannot be on site will be able to watch the event live on NASA TV.

 

WHEN:                          July 8, 2009

 

TIME:                            11 a.m. MDT

 

WHAT:                          Honorary degree ceremony in space

 

WHO:                           Robert Thirsk, CSA Astronaut

                                                                       

 

WHERE:                       University of Calgary

           Eckhardt-Gramatte Concert Hall

                                   Rosza Centre

 

To schedule interviews with CSA spokespersons, please contact CSA Media Relations at 450-926-4370.

Jacques :-)

Offline John44

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Re: Expedition 20 thread
« Reply #155 on: 07/07/2009 06:04 pm »

Offline rdale

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Re: Expedition 20 thread
« Reply #156 on: 07/07/2009 08:29 pm »
It's that time of the year... We've heard about it from the shuttle side - here's what it does to ISS!

Tutorial on BETA ANGLE: Solar Beta angle is the angle between the orbital plane and the line-of-sight to the sun. Beta increases and decreases over time. A high positive or negative peak occurs approximately every 4 weeks. Generally, Solar Beta must not exceed 60 degrees which represents about ~72% sunlight per orbit. A few times per year, Beta magnitude (either + or -, i.e., above or below the plane) increases above 70 deg, which is called a high-beta pass. ISS is currently in a high-beta pass (see above value), and the vehicle is in constant solar insolation. This may seem good for the solar powered EPS (Electrical Power System), but continuous sunlight can cause batteries to overcharge. Overcharging results in temperatures and pressures above the nominal operational range, nearing maximum limits. Vehicle geometry may cause shadowing on some arrays which is sufficient to prevent battery overcharging. If not, ground controllers must shunt (turn off) solar array power to the batteries to simulate an eclipse (night time) and discharge the batteries. This may be required every 4-12 hours. A charge rate PPL (Pre-Positioned Load) may also be loaded to the EPS MDMs (Multiplexer/Demultiplexer, computers) to reduce the current into the batteries during charging. Each power channel has a slightly different shadowing profile and battery chemistry, so the type and frequency of action is not uniform for all channels. Nonetheless, all action is performed per standard ground procedures.

Offline robertross

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Re: Expedition 20 thread
« Reply #157 on: 07/07/2009 09:47 pm »
Honorary Degree in Space

Longueuil, Quebec, July 6, 2009– On July 8, the Canadian Space Agency astronaut Robert Thirsk will become the first person ever to receive an Honorary degree in space. University of Calgary Chancellor, Joanne Cuthbertson will bestow the precious diploma via downlink between the International Space Station and the University. Media representatives are invited to witness this world premier.


FANTASTIC!   :)

Thanks for posting that Jacques!

Offline John44

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Re: Expedition 20 thread
« Reply #158 on: 07/08/2009 06:21 pm »
 Expedition 20 In-Flight Event for CSA with the University of Calgary
http://www.space-multimedia.nl.eu.org/index.php?option=com_content&view=article&id=5133

Offline rdale

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Re: Expedition 20 thread
« Reply #159 on: 07/08/2009 06:28 pm »
Mike Barratt & Frank DeWinne conducted a 2-hr high-level OBT (Onboard Training) review of the latest HTV (H-2 Transfer Vehicle) approach monitoring & robotics/capture procedures and cue card. An HTV crew conference is planned tomorrow to discuss details, followed by more preparatory training events in the future.

All six crewmembers performed the mandatory two-hour OBT (onboard training) emergency egress drill for the case of rapid cabin depressurization, with Russian & US specialists standing by at both control centers for crew questions or comments, followed by a 20-min debrief with ground specialists. [Background: Purpose of the drill is to (a) familiarize the station residents with the location of hardware and the positions of valves used in emergency situations, (b) work through the Russian Segment (RS) hardware deactivation procedures, (c) practice crew emergency joint activities, and (d) identify crew comments and suggestions that arise during training regarding crew procedures and equipment. In the RS, the crew translated along the emergency egress paths to the nadir-facing ports of the DC1 and FGB (where Soyuz 18S & 19S, resp. are currently docked), checking hardware such as the Sokol suits, cable cutters, fire extinguisher (OKR), gas masks (IPK), emergency procedures books, valve settings, hatch rubber seal & restraint integrity, etc. In the US Segment (USOS) the inspection focused on fireports being unblocked in the Lab {21}, with other US modules to be checked by future crews), readiness of CSA-CP (Compound Specific Analyzer-Combustion Products), ISS leak kit, PBA (portable breathing assembly) and PFE (portable fire extinguisher), emergency procedures books, valve settings, integrity of hatch rubber seals, presence of hatch handrails, etc. The checks also included Node-2, COL (Columbus Orbital Laboratory), JLP (Japanese Experiment Module Experiment Logistics Module Pressurized Section) and Kibo JPM (JEM Pressurized Module). The exercise was topped off by a thorough debrief with the ground via S-band. During the session, the crew simulated executing the planned emergency procedures while moving about the station. For the case of an onboard fire and for emergency descent, there are other mandatory emergency drill OBTs.]


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