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ISS STATUS REPORT #05-45 - 16 SEPT. 2005



SUBMITTED BY ARTHUR N1ORC - AMSAT A/C #31468

*International Space Station Status Report #05-45*
*1 p.m. CDT Friday, September 16, 2005*
*Expedition 11 Crew*

The installation of a replacement part for an oxygen-generating system, 
unpacking a recently arrived cargo carrier and the disassembly of a 
radiation-detection experiment highlighted this week’s activities aboard 
the International Space Station.

Expedition 11 Commander Sergei Krikalev and NASA Science Officer John 
Phillips are scheduled to activate the Elektron oxygen-generation system 
with its new liquids unit on Monday. The Elektron breaks down water into 
oxygen for use in the station’s atmosphere. The Elektron has not 
functioned for several months. Adequate oxygen supplies are available on 
the station from tanks and Solid Fuel Oxygen Generators.

The new liquids unit arrived aboard the ISS Progress 19 cargo craft, 
which docked to the complex at 9:42 a.m. CDT Saturday. The Progress 
craft brought 2.6 tons of cargo to the station. Krikalev and Phillips 
began unloading the cargo on Sunday.

The Progress brought more than 2,700 pounds of dry cargo to the station, 
including food, equipment, supplies, clothing and components of 
scientific experiments. The rest of the cargo included fuel for the 
station’s thrusters, water and oxygen. Unloading continued 
intermittently through the week.

After a light-duty day Monday, the crew transferred Progress cargo and 
entered the items into the station's computerized, bar-coded inventory 
management system on Tuesday. Much of Wednesday was devoted to 
disassembly of the Matroshka radiation experiment, retrieved from the 
exterior of the station during an August spacewalk, for return to Earth.

A major part of the European Space Agency Matroshka experiment, 
developed and built in Germany and operated through the German Space 
Agency’s Microgravity User Support Center in Cologne, is a 
human-torso-like device. It was launched on a Progress in January 2004 
and installed on the outside of the Zvezda Service Module the following 
month.

Its interior is similar in density to a human's, and 20 radiation 
detectors are mounted in positions of major human organs. Other 
detectors inside the station also gathered data for transmission to 
Earth and station computers. The experiment is designed to better 
understand the exposure of astronauts, including those making 
spacewalks, to radiation.

In addition to the Elektron liquids unit replacement, Thursday work 
included setup of hardware for the Foot/Ground Reaction Forces During 
Spaceflight (Foot) experiment. Phillips put on customized Lycra cycling 
tights for his fifth and final session of the experiment. Foot 
investigates the differences between use of the body’s lower extremities 
on Earth and in space, as well as changes in the musculoskeletal system 
during spaceflight.

During the session, Phillips wore the instrumented Lower Extremity 
Monitoring Suit, or LEMS, which measures joint angles, muscle activity 
and forces on the feet while exercising. During the final run, a special 
exercise protocol was used to measure forces Phillips experiences on the 
cycle ergometer and the Resistive Exercise Device.

Taking force measurements while running through the range of settings 
with each piece of exercise equipment helps determine the settings 
necessary to match the forces that bones experience during exercise on 
Earth. Matching those forces during exercise is critical to reducing the 
amount of bone lost while in weightlessness.

Also this week, flight controllers and engineers in Houston assisted 
with the transition aboard the station to a faster advanced portable 
computer software. The transition was completed Wednesday. Flight 
controllers also maneuvered station cameras to capture images of 
Hurricane Ophelia several times this week as it approached the Carolina 
coast.

For information on the crew's activities aboard the station, future 
launch dates, and station sighting opportunities from anywhere on the 
Earth, visit:

http://www.nasa.gov/station

The next station status report will be issued on Thursday, Sept. 22, or 
earlier if events warrant.

--end--

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