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



Columbia Report
A reproduction of the official accident investigation report into the loss of the space shuttle Columbia and its crew of seven.
 Choose your store:
U.S. - U.K. - E.U. - Worldwide

Mars Panorama

DISCOUNTED! This 360 degree image was taken by the Mars Pathfinder, which landed on the Red Planet in July 1997. The Sojourner Rover is visible in the image.
 Choose your store:
U.S.

Apollo 11 Mission Report
Apollo 11 - The NASA Mission Reports Vol. 3 is the first comprehensive study of man's first mission to another world is revealed in all of its startling complexity. Includes DVD!
 Choose your store:
U.S. - U.K. - E.U. - Worldwide

Rocket DVD
If you've ever watched a launch from Kennedy Space Center, Cape Canaveral, Vandenberg Air Force Base or even Kodiak Island Alaska, there's no better way to describe what you witnessed than with this DVD.
 Choose your store:
U.S. - U.K. - E.U. - Worldwide

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.

Final Shuttle Mission Patch

Free shipping to U.S. addresses!

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

STS-134 Patch

Free shipping to U.S. addresses!

The final planned flight of space shuttle Endeavour is symbolized in the official embroidered crew patch for STS-134. Available in our store!
 U.S. STORE
 WORLDWIDE STORE

Ares 1-X Patch
The official embroidered patch for the Ares 1-X rocket test flight, is available for purchase.
 U.S. STORE
 WORLDWIDE STORE

Apollo Collage
This beautiful one piece set features the Apollo program emblem surrounded by the individual mission logos.
 U.S. STORE
 WORLDWIDE STORE

Project Orion
The Orion crew exploration vehicle is NASA's first new human spacecraft developed since the space shuttle a quarter-century earlier. The capsule is one of the key elements of returning astronauts to the Moon.
 U.S. 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

ERROR: Random File Unopenable

ERROR: Random File Unopenable

The random file, as specified in the $random_file perl variable was unopenable.

The file was not found on your file system. This means that it has either not been created or the path you have specified in $trrandom_file is incorrect.
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:

Gemini 7
Gemini 7: The NASA Mission Reports covers this 14-day mission by Borman and Lovell as they demonstrated some of the more essential facts of space flight. 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

Mars Rover mission patch
A mission patch featuring NASA's Mars Exploration Rover is available from our online.
 Choose your store:
U.S. - U.K. - E.U. - Worldwide

Apollo 9 DVD
On the road to the moon, the mission of Apollo 9 stands as an important gateway in experience and procedures. This 2-DVD collection presents the crucial mission on the voyage to the moon.
 Choose your store:
U.S. - U.K. - E.U. - Worldwide


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

ADVERTISE

© 2014 Spaceflight Now Inc.