Topics in this report:
1. Successful ARISS Contact Held with Boy Scout Space Jamboree
2. ARRL Article on ARISS School, Greenville Elementary
3. Amateur Radio Newsline Covers ARISS Event

1. Successful ARISS Contact Held with Boy Scout Space Jamboree
An Amateur Radio on the International Space Station (ARISS) contact was held with Boy and Girl Scouts in Rantoul, Illinois on Sunday, August 8. On-orbit astronaut Doug Wheelock, KF5BOC answered 14 questions prepared for him by the Scouts. The contact was part of the Space Jamboree held at the Rantoul National Aviation Center. Scouts from over eight states in the Midwest attended and earned merit badges in Space Exploration, Aviation, Robotics, Radio & Electronics and others.

Watch the EVA live at http://www.nasa.gov/multimedia/nasatv/index.html

Expedition 24 Flight Engineers Doug Wheelock and Tracy Caldwell Dyson switched their spacesuits to battery power at 7:19 a.m. EDT, signaling the start of the first of two spacewalks that will focus on removing the ammonia pump module that failed last Saturday and putting its replacement in place.

The repair tasks, which include removing the failed pump module from the S1 Truss and retrieving a spare from an external stowage platform, are expected to take about 6.5 to 7 hours. They are scheduled to complete installation and activation of the new pump module during the second spacewalk planned for Wednesday at 6:55 a.m.

NASA International Space Station managers have delayed two spacewalks to replace a faulty cooling system component to Saturday and Wednesday.

Saturday's spacewalk now is officially scheduled to begin at 6:55 a.m. EDT, and will be followed by a second spacewalk Wednesday to complete replacement of the ammonia pump module that failed last Saturday.

Teams of flight controllers, engineers, and spacewalk and robotics experts have made significant progress in preparing for the spacewalk, but need an additional day to finish working out all the details.

The additional time to prepare for the first spacewalk allows for the final procedures to be uplinked late today and gives the station crew one full day to review the plans that have been developed by Mission Control. Managers also moved the second spacewalk to Wednesday to give the crew additional time to rest and prepare.

NASA has decided to wait until Friday to conduct a spacewalk to replace a failed ammonia pump module on the International Space Station.

Mission managers, program managers, flight controllers, engineers, astronauts and spacewalk experts made the decision Monday evening after continuing to analyze and refine engineering requirements, and reviewing the results of an underwater practice session.

Expedition 24 astronauts Doug Wheelock and Tracy Caldwell Dyson currently are scheduled to start the repairs on the station's starboard truss Friday. Fellow astronauts Cady Coleman and Suni Williams spent the afternoon in the Johnson Space Center's Neutral Buoyancy Laboratory practicing underwater the tasks needed to restore the cooling loop over the course of two spacewalks.

Topics in this report:
1. Upcoming School Contact
2. Boy Scouts Celebrate Anniversary with ARISS Contact
3. ARISS News on Amateur Radio Newsline

1. Upcoming School Contact
An Amateur Radio on the International Space Station (ARISS) contact has been scheduled for the Space Jamboree in Rantoul, Illinois on Saturday, August 7 at 15:07 UTC. The Rantoul National Aviation Center is the former Chanute Air Force Base and is the home of the Chanute Air Museum, which collects, preserves, exhibits and interprets aviation and aerospace artifacts that relate to the life and accomplishments of Octave Chanute, Chanute Field/ Chanute Air Force Base and its technical training programs, the history of military aviation and Illinois aviation. The museum reaches out to youth with Aviation Camp and this year will host the "Space Jam 4" for Boy and Girl Scouts coming from over four states in the Midwest. Merit Badges may be earned in Space Exploration, Aviation, Radio & Electronics and others.

Trouble with one of the International Space Station's external coolant loops, used to dissipate the heat generated by the lab's electronics systems, triggered an extensive powerdown late Saturday. NASA managers met Sunday and gave preliminary approval to a difficult two-spacewalk repair job, starting as early as Thursday, to restore the critical system to normal operation.

It is not yet clear what went wrong, but the ammonia pump module that is part of coolant loop A, mounted on the right side of the station's main power truss, failed around 8 p.m. EDT Saturday. A problem somewhere in the system caused a circuit breaker to trip, setting off multiple alarms and waking the crew.

The number of languages used on the International Space Station has recently increased. In addition to those spoken in the 15 countries that have had representatives aboard the space station, American Sign Language, or ASL, is now included. NASA astronaut Tracy Caldwell Dyson has sent a message in ASL from the station to the deaf community.

In the video, Caldwell Dyson answered several questions about living and working aboard the station and how she became interested in sign language.

"I am truly grateful for this opportunity on behalf of the deaf community and the multitudes of students who will benefit from seeing their language spoken in space," Caldwell Dyson said. "It is my hope that this video will help inspire our next generation of scientists and explorers."

The members of the International Space Station's Expedition 24 crew shifted their sleep schedule Monday in preparation for their mission's first spacewalk, waking up at about 2:40 p.m. EDT.

Flight Engineers Fyodor Yurchikhin, a veteran of three spacewalks in 2007 during Expedition 15, and Mikhail Kornienko, a spacewalk rookie, will perform the six-hour spacewalk. The pair will exit the Pirs docking compartment and work outside the Zarya and Zvezda modules. The Pirs Docking Compartment hatch is slated to open at 11:45 p.m. to begin the excursion.

The pair will outfit the Rassvet module's Kurs automated rendezvous system, install cables and remove and replace a video camera. Kurs is a Russian radio telemetry system that allows automated dockings of unmanned spacecraft such as the Progress resupply vehicle. The new video camera will document the rendezvous and docking of future Automated Transfer Vehicles to the aft end of the Zvezda service module.

Topics in this report:
1. Upcoming School Contact
2. ARISS Contact with International Space University Students
3. ARRL Covers 2010 National Scout Jamboree
4. ARISS-Brazil Web Page Updated
5. Astronaut Training Status
6. Astronaut T. J. Creamer Participates in ISS Ham Debrief
7. ARISS International Team Meeting Held

1. Upcoming School Contact
An Amateur Radio on the International Space Station (ARISS) contact has been scheduled for the 2010 National Boy Scout Jamboree in Fort A.P. Hill, Virginia on Saturday, July 31 at 18:21 UTC. The jamboree is being planned for about 43,000 Scouts and leaders in 825 troops, plus some 5,000 staff members for support, program and headquarters services. The K2BSA Amateur Radio Demonstration Area is a hot spot of activity throughout the Jamboree. At past Jamborees, thousands of Scouts toured K2BSA. More than 300 earned their Radio Merit Badges and more than 100 new Technician licenses were earned. The club supporting this event is the K2BSA Amateur Radio Association.

The Expedition 24 crew members aboard the International Space Station focused on spacewalk preparations and maintenance activities Wednesday.

To prepare for a six-hour spacewalk set to begin at 11:45 p.m. EDT Monday, Flight Engineers Fyodor Yurchikhin and Mikhail Kornienko installed new batteries in the Russian Orlan spacesuits they will wear on their excursion. The spacewalkers will install Kurs automated rendezvous equipment on the exterior of the recently delivered Rassvet module to facilitate future dockings with Russian spacecraft. A dry run of the spacewalk will take place Friday when the cosmonauts will wear the spacesuits, practice their movements and test their mobility.