Spaceflight Now STS-110


Series of spacewalks to bring new truss to life completed
BY WILLIAM HARWOOD
STORY WRITTEN FOR CBS NEWS "SPACE PLACE" & USED WITH PERMISSION
Posted: April 16, 2002

With the completion of the fourth and final spacewalk of Atlantis' mission, NASA managers today declared the new $790 million S0 truss mounted atop the international space station fully operational. While attention today was focused on spacewalkers Jerry Ross and Lee Morin, engineers at the Johnson Space Center successfully activated a final set of critical internal systems that eventually will route power to the station from huge solar arrays mounted on the ends of the completed truss.

"We fully activated and checked out all of our electrical distribution equipment," said Ben Sellari, NASA's S0 launch package manager. "We also verified a very important new feature that S0 adds to the power distribution system, which is what we call a hot crosstie. We are able to take other primary and secondary channels and cross over between those in the event we have certain power losses. So it gives us some additional flexibility and redundancy in the future to do power management and respond to failures."

Summarizing the testing to date, Sellari said "all of the S0 systems have been working essentially flawlessly. I mean, we haven't seen - and I'm almost afraid to say this because we might jinx ourselves - we haven't seen a single heater problem, we haven't seen a single unexpected or anomalous annunciation. The hardware and the software has been working very, very well."

Lead spacewalk planner Dina Barclay was equally pleased, calling today's spacewalk the final chapter in "an extraordinary series of spacewalks that brought our newest element of the international space station to life."

"Jerry and Lee, our grandfather duo, came inside having rounded out an incredible set of spacewalks," she said. "Today the crew far exceeded our expectations and we were even able to complete an objective that had been previously deleted and another one that was learned of post launch."

Repressurization of the space station's Quest airlock module began at 5:06 p.m., officially ending a six-hour 37-minute spacewalk.

For the statistically minded, this was the 38th spacewalk devoted to space station assembly since December 1998. Thirty NASA astronauts, one Canadian and five Russian cosmonauts have now logged 236 hours and 27 minutes of spacewalk time building the international outpost. Of that total, 13 spacewalks totaling 69 hours and 12 minutes were logged by astronauts using space station airlocks. The rest were staged from the airlocks of visiting shuttles. The four spacewalks carried out during Atlantis' mission added up to 28 hours and 22 minutes.

Jerry Ross, veteran of a world-record seven space flights, now holds the U.S. record for spacewalks with nine excursions totaling 58 hours and 18 minutes. Astronauts Steven Smith, also aboard Atlantis, is in second place with 49 hours and 48 minutes of spacewalk time. First place belongs to cosmonaut Anatoly Solovyov, who has logged 77 hours and 41 minutes of EVA time in 16 spacewalks.

The only problems today involved a gas analyzer that appeared to stop working shortly after its installation and problems removing a stuck bolt from a cable cutter. But these were minor issues in a day that saw the astronauts tighten or loosen another 59 bolts and nine cable connections.

"With these four spacewalks behind us, for our team it's mission accomplished," Barclay said. "We're really proud of what our crew and team have accomplished."

Going into mission STS-110, the astronauts and flight controllers faced three tiers of mission requirements: 10 category 1 "mandatory" requirements, eight category 2 requirements for continuing station assembly and 31 tasks in category 3 that were required to assist future assembly crews. Sellari said that as of today, only three items have yet to be accomplished: The transfer or more fresh water, nitrogen and oxygen to the station. By the time Atlantis undocks Wednesday, however, the crew should be 100 percent complete.

"This has been an extraordinary mission in a lot of ways," Sellari said. "We seem to make the missions (look) very easy. But I can assure you, nobody who has followed this flight very closely believes this has been an easy mission. The proficiency by which the element teams, our contractor teams, our operations teams and our flight crew teams perform their operations are both a blessing and a curse. It's a blessing in that we try to accomplish a high percentage of our objectives, it's a curse because getting that high efficiency and having a lot of success makes it look very easy. And I can assure you this was not an easy flight.

"We've had an extraordinarily successful mission," he summarized, "we are very, very proud of the hardware on board station. S0 is where it belongs, it's in space, it's an integral part of international space station, it is poised with its new capabilities to allow the space station now to expand its capabilities, its core systems, to meet its full potential as a world-class on-orbit laboratory."

Aboard the space station, meanwhile, the astronauts took a break early this evening for a final joint dinner before Atlantis undocks Wednesday. Undocking is targeted for 2:31 p.m.

Recent updates

FRIDAY
01:30 PM
Quick-look Data

07:30 AM
Entry Timeline


THURSDAY
12:00 AM
Master Flight Plan

Daily Flight Plan (FD-11/12)


WEDNESDAY
12:50 AM
Undocking timeline


TUESDAY
11:50 PM
NASA TV Sked (rev. I)

05:40 PM
Spacewalk Stats



Soviet Space
For the first time ever available in the West. Rocket & Space Corporation Energia: a complete pictorial history of the Soviet/Russian Space Program from 1946 to the present day all in full color. Available from our store.
 Choose your store:
U.S. - U.K. - E.U. - Worldwide

Viking patch
This embroidered mission patch celebrates NASA's Viking Project which reached the Red Planet in 1976.
 Choose your store:
U.S. - U.K. - E.U. - Worldwide

Apollo 7 DVD
For 11 days the crew of Apollo 7 fought colds while they put the Apollo spacecraft through a workout, establishing confidence in the machine what would lead directly to the bold decision to send Apollo 8 to the moon just 2 months later.
 Choose your store:
U.S. - U.K. - E.U. - Worldwide

Gemini 12
Gemini 12: The NASA Mission Reports covers the voyage of James Lovell and Buzz Aldrin that capped the Gemini program's efforts to prove the technologies and techniques that would be needed for the Apollo Moon landings. Includes CD-ROM.
 Choose your store:
U.S. - U.K. - E.U. - Worldwide

Apollo patches
The Apollo Patch Collection: Includes all 12 Apollo mission patches plus the Apollo Program Patch. Save over 20% off the Individual price.
 Choose your store:
U.S. - U.K. - E.U. - Worldwide

John Glenn Mission Patch

Free shipping to U.S. addresses!

The historic first orbital flight by an American is marked by this commemorative patch for John Glenn and Friendship 7.
 U.S. STORE
 WORLDWIDE STORE

Final Shuttle Mission Patch

Free shipping to U.S. addresses!

The crew emblem for the final space shuttle mission is available in our store. Get this piece of history!
 U.S. STORE
 WORLDWIDE STORE

Celebrate the shuttle program

Free shipping to U.S. addresses!

This special commemorative patch marks the retirement of NASA's Space Shuttle Program. Available in our store!
 U.S. STORE
 WORLDWIDE STORE

Anniversary Shuttle Patch

Free shipping to U.S. addresses!

This embroidered patch commemorates the 30th anniversary of the Space Shuttle Program. The design features the space shuttle Columbia's historic maiden flight of April 12, 1981.
 U.S. STORE
 WORLDWIDE STORE

Mercury anniversary

Free shipping to U.S. addresses!


Celebrate the 50th anniversary of Alan Shephard's historic Mercury mission with this collectors' item, the official commemorative embroidered patch.
 U.S. STORE
 WORLDWIDE STORE

Fallen Heroes Patch Collection
The official patches from Apollo 1, the shuttle Challenger and Columbia crews are available in the store.
 U.S. STORE
 WORLDWIDE STORE

Women Astronauts
Learn about women astronauts,what they do, and how they got to where they are today. Read their story and how attitudes towards women in space changed.
 U.S. STORE
 WORLDWIDE STORE

Get e-mail updates
Sign up for our NewsAlert service and have the latest news in astronomy and space e-mailed direct to your desktop (privacy note: your e-mail address will not be used for any other purpose).
Enter your e-mail address:

Apollo 11 special patch
Special collectors' patch marking the 35th anniversary of the historic Apollo 11 moon landing is now available.
 Choose your store:
U.S. - U.K. - E.U. - Worldwide

Inside Apollo mission control
An insider's view of how Apollo flight controllers operated and just what they faced when events were crucial.
 Choose your store:
U.S.

The ultimate Apollo 11 DVD
This exceptional chronicle of the historic Apollo 11 lunar landing mission features new digital transfers of film and television coverage unmatched by any other.
 Choose your store:
U.S. - U.K. - E.U. - Worldwide

Next ISS crew
Own a little piece of history with this official patch for the International Space Station's Expedition 11 crew. We'll ship yours today!
 Choose your store:
U.S.


INDEX | PLUS | NEWS ARCHIVE | LAUNCH SCHEDULE
ASTRONOMY NOW | STORE

ADVERTISE

© 2014 Spaceflight Now Inc.